Abstract
This is an account of the molecular systematics and phylogeny of the osmotrophic stramenopile lineages traditionally studied by mycologists, which include the Labyrinthulomycota, Hyphochytriomycota, and Oomycota. All three groups produce zoospores with a mastigonate anterior flagellum, and all fall within Kingdom Straminipila, which is part of the larger stramenopile/alveolate/rhizaria superkingdom. The labyrinthulids and thraustochytrids are part of the same monophyletic clade as the bicoecids, protermonads, and opalinids, whereas the hyphochytrids and oomycetes are part of a sister clade, together with all the ochrophyte algae and some bacteriotrophic flagellates. Both are believed to have evolved from a common mixotrophic flagellate ancestor. The Labyrinthulomycota contains two order-level clades, the Thraustochytridiales (encompassing a half dozen or so thraustochytrid families and Diplophrys like protists) and the Labyrinthulales (containing the Labyrinthulaceae and Aplanochytridiaceae). The Hyphochytriomycota (based on sequence data for Hyphochytrium and Rhizochytrium) fall into a well-supported monophyletic clade that sits between the Ochrophyta and the Oomycota, although recent unpublished evidence suggests that the Anisolpidiaceae should be excluded. The Oomycota are the largest and most complex stramenopile clade. Four early-diverging order-level clades (Eurychasmales, Haptoglossales, Olpidiopsidales s.lat., and Haliphthorales) are recognized but have not been assigned to classes. Nearly all early-diverging genera are marine organisms that are parasites of algae, acheleminthes, or crustaceans. The later-diverging oomycetes are mostly found in freshwater and terrestrial ecosystems and fall into two class-level clades: the Saprolegniomycetes and Peronosporomycetes. Both have been split into three orders (Atkinsiellales, Leptomitales s. lat., and Saprolegniales for the former and Rhipidiales, Albuginales, and Peronosporales s. lat. for the latter). Morphological characteristics associated with zoosporogenesis and sexual reproduction are discussed in relation to our revised phylogenetic framework. Finally, a possible evolutionary timeline based on both molecular and fossil evidence is discussed.
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References
Adl SM, Simpson AGB, Lane CE, Lukes J, Bass D, Bowser SS, Brown MW, Burki F, Hampl V, Heiss A, Hoppenrath M, Lara E, Le Gall L, Lynn DH, McManus H, Mitchell EAD, Mozley-Stanridge SE, Parfrey LW, Pawlowski J, Rueckert S, Shadwick L, Schoch CL, Smirnov A, Spiegel FW (2012) A revised classification of eukaryotes. J Eukaryot Microbiol 59:429–493
Andersen RA, Barr DJS, Lynn DH, Melkonian M, Moestrup O, Sleigh MA (1991) Terminology and nomenclature of the cytoskeletal elements associated with the flagellar/ciliary apparatus in protists. Protoplasma 164:1–8
Anderson OR, Cavalier-Smith T (2012) Ultrastructure of Diplophyrs parva, a new small freshwater species, and a revised analysis of Labyrinthulea (Heterokonta). Acta Protozool 51:291–304
Anderson SA, Stewart A, Allen GT (1995) Pseudosphaerita euglenae, a fungal parasite of Euglena spp. in the Mangere oxidation ponds, Auckland, New Zealand. N Z J Mar Freshw Res 29:371–379
Arcate JM, Karp MA, Nelson EB (2006) Diversity of peronosporomycete (oomycete) communities associated with the rhizosphere of different plant species. Microb Ecol 51:36–50
Armbrust EV, Berges JA, Bowler C, Green BR, Martinez D, Putnam NH, Zhou S, Allen AE, Apt KE, Bechner M, Brzezinski MA, Chaal BK, Chiovitti A, Davis AK, Demarest MS, Detter JC, Glavina T, Goodstein D, Hadi MZ, Hellsten U, Hildebrand M, Jenkins BD, Jurka J, Kapitonov VV, Kröger N, Lau WW, Lane TW, Larimer FW, Lippmeier JC, Lucas S, Medina M, Montsant A, Obornik M, Parker MS, Palenik B, Pazour GJ, Richardson PM, Rynearson TA, Saito MA, Schwartz DC, Thamatrakoln K, Valentin K, Vardi A, Wilkerson FP, Rokhsar DS (2004) The genome of the diatom Thalassiosira pseudonana: ecology, evolution and metabolism. Science 306:79–86
Ayers WA, Lumsden RD (1977) Mycoparasitism of oospores of Pythium and Aphanomyces species by Hyphochytrium catenoides. Can J Microbiol 23:38–44
Azevedo C, Corral L (1997) Some ultrastructural observations of a thraustochytrid (Protoctista, Labyrinthulomycota) from clam Ruditapes decussatus (Mollusca, Bivalvia). Dis Aquat Organ 31:73–78
Bahnweg G, Sparrow FK (1974) Four new species of Traustochytrium from antarctic regions, with notes on the distribution of zoosporic fungi in the antarctic marine ecosystems. Am J Bot 61:754–766
Bala K, Robideau G, Lévesque A, de Cock WAM, Abad ZG, Lodhi AM, Coffey MD (2010) Phytopythium. Persoonia 24:136–137
Barr DJS (1981) The phylogenetic and taxonomic implications of flagellar rootlet morphology among zoosporic fungi. Biosystems 14:359–370
Barr DJS, Allan PME (1985) A comparison of the flagellar apparatus in Phytophthora, Saprolegnia, Thraustochytrium, and Rhizidiomyces. Can J Bot 63:138–154
Barr DJS, Désaulniers NL (1987) The ultrastructure of Lagena radicola zoospores, including a comparison with the primary and secondary Saprolegnia zoospores. Can J Bot 65:2161–2176
Barr DJS, Désaulniers NL (1989) The flagellar apparatus of the oomycetes and hyphochytriomycetes. In: Green JC, Leadbeater BSC, Diver WL (eds) The chromophyte algae: problems and perspectives. Oxford University Press, Oxford, pp 343–355
Barr DJS, Désaulniers NL (1990) The life cycle Lagena radicola, an oomycetous parasite of wheat roots. Can J Bot 68:2112–2118
Barrett (1912) Development and sexuality in Olpidiopsis (Cornu) Fisher. Ann Bot 26:209–238
Barron (1976) Nematophagous fungi: three new species of Myzocytium. Can J Bot 22:752–762
Bartnicki-Garcia S (1970) Cell wall composition and other biochemical markers in fungal phylogeny. In: Harborne JG (ed) Phytochemical phylogeny. Academic, New York, pp 81–103
Bartnicki-Garcia S (1996) The hypha: the unifying thread of the fungal kingdom. In: Sutton BC (ed) A century of mycology. Cambridge University Press, Cambridge, pp 105–133
Baxter L, Tripathy S, Ishaque N, Boot N, Cabral A, Kemen E, Thines M, Ah-Fong A, Anderson R, Badejoko W, Bittner-Eddy P, Boore JL, Chibucos MC, Coates M, Dehal P, Delehaunty K, Dong S, Downton P, Dumas B, Fabro G, Fronick C, Fuerstenberg SI, Fulton L, Gaulin E, Govers F, Hughes L, Humphray S, Jiang RH, Judelson H, Kamoun S, Kyung K, Meijer H, Minx P, Morris P, Nelson J, Phuntumart V, Qutob D, Rehmany A, Rougon-Cardoso A, Ryden P, Torto-Alalibo T, Studholme D, Wang Y, Win J, Wood J, Clifton SW, Rogers J, Van den Ackerveken G, Jones JD, McDowell JM, Beynon J, Tyler BM (2010) Signatures of adaptation to obligate biotrophy in the Hyaloperonospora genome. Science 330:1549–1551
Beakes GW (1981) Ultrastructural aspects of oospore differentiation. In: Hohl H, Turian G (eds) The fungal spore: morphogenetic controls. Academic, London and New York, pp 71–94
Beakes GW (1983) A comparative account of cyst coat ontogeny in saprophytic and fish-lesion isolates (pathogenic) of the Saprolegnia diclina-parasitica complex. Can J Bot 61:603–625
Beakes GW (1987) Oomycete phylogeny: ultrastructural perspectives. In: Rayner ADM, Brasier CM, Moore D (eds) Evolutionary biology of the fungi. Cambridge University Press, Cambridge, pp 405–421
Beakes GW (1989) Oomycete fungi: their phylogeny and relationship to chromophyte algae. In: Green JC, Leadbeater BSC, Diver WL (eds) The chromophyte algae: problems and perspectives. Oxford University Press, Oxford, pp 325–342
Beakes GW (1994) Sporulation of lower fungi. In: Gow NAR, Gadd GM (eds) The growing fungus. Chapman & Hall, London, pp 337–366
Beakes GW, Glockling SL (1998) Injection tube differentiation in gun cells of a Haptoglossa species which infects nematodes. Fungal Genet Biol 24:45–68
Beakes GW, Glockling SL (2000) An ultrastructural analysis of organelle arrangement during gun (infection) cell differentiation in the nematode parasite Haptoglossa dickii. Mycol Res 104:1258–1269
Beakes GW, Glockling SL (2002) A comparative fine-structural study of dimorphic infection cells in the nematophagous parasite, Haptoglossa erumpens. Fungal Genet Biol 37:250–262
Beakes GW, Sekimoto S (2009) The evolutionary phylogeny of oomycetes—insights gained from studies of holocarpic parasites of algae and invertebrates. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley, New York, pp 1–24
Beakes GW, Singh H, Dickinson CH (1982) Ultrastructure of the host-pathogen interface of Peronospora viciae in cultivars of pea which show different susceptibilities. Plant Pathol 31:343–354
Beakes GW, Wood SE, Burr AW, Hardham AR (1995) Application of spore surface features in defining taxonomic versus ecological groups in Oomycete fungi. Can J Bot 73(suppl):701–711
Beakes GW, Glockling SL, James TY (2006) The diversity of oomycete pathogens of nematodes and its implications to our understanding of oomycete phylogeny. In: Meyer W, Pearce C (eds) Proceedings of the 8th International Mycological Congress, Medimond, Bologna, Italy, pp 7–12
Beakes GW, Glockling SL, Sekimoto S (2012) The evolutionary phylogeny of the oomycete “fungi”. Protoplasma 249:3–19
Bedard JEJ, Schurko AM, de Cock AWAM, Klassen GR (2006) Diversity and evolution of 5S rRNA gene family and organization in Pythium. Mycol Res 110:86–95
Bhattacharya D, Yoon HS, Hedges SB, Hackett D (2009) Eukaryotes. In: Hedges SB, Kumar S (eds) The timetree of life. Oxford University Press, New York, pp 116–120
Blackwell WH (2010) The enigmatic genus Pythiella (Oomycota). Phytologia 92:304–311
Blair JE, Coffey MD, Park S-Y, Geiser DM, Kang S (2008) A multi-locus phylogeny for Phytophthora utilizing markers derived from complete genome sequences. Fungal Genet Biol 45:266–277
Bongiorni L (2012) Thraustochytrids, a neglected component of organic matter decomposition and food webs in marine sediments. In: Raghu-Kumar C (ed) Biology of marine fungi. Prog Mol Subcell Biol 53:1–13
Bortnick RN, Powell MJ, Bangert TN (1985) Zoospore fine-structure of the parasite Olpidiopsis saprolegniae (Oomycetes, Lagenidiales). Mycologia 77:861–879
Bower SM (1987) Labyrinthuloides haliotidis n. sp. (Protozoa, Layrinthulomorpha), a pathogenic parasite of small juvenile abalone in a British Columbia mariculture facility. Can J Zool 65:2013–2020
Bowler C, Allen AE, Badger JH, Grimwood J, Jabbari K, Kuo A, Maheswari U, Martens C, Maumus F, Otillar RP, Rayko E, Salamov A, Vandepoele K, Beszteri B, Gruber A, Heijde M, Katinka M, Mock T, Valentin K, Verret F, Berges JA, Brownlee C, Cadoret JP, Chiovitti A, Choi CJ, Coesel S, De Martino A, Detter JC, Durkin C, Falciatore A, Fournet J, Haruta M, Huysman MJ, Jenkins BD, Jiroutova K, Jorgensen RE, Joubert Y, Kaplan A, Kröger N, Kroth PG, La Roche J, Lindquist E, Lommer M, Martin-Jézéquel V, Lopez PJ, Lucas S, Mangogna M, McGinnis K, Medlin LK, Montsant A, Oudot-Le Secq MP, Napoli C, Obornik M, Parker MS, Petit JL, Porcel BM, Poulsen N, Robison M, Rychlewski L, Rynearson TA, Schmutz J, Shapiro H, Siaut M, Stanley M, Sussman MR, Taylor AR, Vardi A, von Dassow P, Vyverman W, Willis A, Wyrwicz LS, Rokhsar DS, Weissenbach J, Armbrust EV, Green BR, Van de Peer Y, Grigoriev IV (2008) The Phaeodactylum genome reveals the evolutionary history of diatom genomes. Nature 456:239–244
Bozkurt TO, Schornack S, Banfield MJ, Kamoun S (2012) Oomycetes, effectors and all that jazz. Curr Opin Plant Biol 15:1–10
Brasier C, Weber J (2010) Sudden larch death. Nature 466:824–825
Briard M, Dutertre M, Rouxel F, Brygoo Y (1995) Ribosomal DNA sequence divergence within the Pythiaceae. Mycol Res 99:1119–1127
Brown JW, Sorhannus U (2010) A molecular genetic timescale for the diversification of autotrophic stramenopiles (Ochrophyta): substantive underestimation of putative fossil ages. PLoS One 5(9):e12759. doi:10.1371/journal.pone.0012759
Burki F, Shalchian-Tabrizi K, Pawlowski J (2008) Phylogenomics reveals a new ‘megagroup’ including most photosynthetic eukaryotes. Biol Lett 4:366–369
Burr AW, Beakes GW (1994) Characterization of zoospore and cyst surface structure in saprophytic and fish pathogenic Saprolegnia species (oomycete fungal protists). Protoplasma 181:142–163
Canter HM (1950) Studies on British chytrids IX. Anisolpidium stigeoclonii (De Wildeman) n. comb. Trans Br Mycol Soc 33:335–344
Canter HM, Dick MW (1994) Eurychasmopsis multisecunda gen. et sp. nov., a parasite of the suctorian Podophrya sp. (Ciliata). Mycol Res 98:105–117
Cavalier-Smith T (1986) The kingdom Chromista: origin and systematics. In: Round FE, Chapman DJ (eds) Progress in phycological research, vol 4. Biopress Limited, Bristol, pp 309–347
Cavalier-Smith T, Chao EEY (2006) Phylogeny and megasystematics of phagotrophic heterokonts (Kingdom Chromista). J Mol Evol 62:388–420
Cerenius L, Soderhall K, Persson M, Ajaxon R (1988) The crayfish plague fungus Aphanomyces astaci—diagnosis, isolation and pathobiology. Freshw Crayfish 7:131–144
Choi Y-J, Jong S-B, Shin H-D (2005) A reconsideration of Pseudoperonospora cubensis and P. humuli based on molecular and morphological data. Mycol Res 109:842–848
Choi Y-J, Jong S-B, Shin H-D (2006) Genetic diversity within the Albugo candida complex (Peronosporales, Oomycota) inferred from phylogenetic analysis of ITS rDNA and COX2 mt DNA sequences. Mol Pylogenet Evol 40:400–409
Choi Y-J, Shin H-D, Hong S-B, Thines M (2007) Morphological and molecular discrimination among Albugo candida materials infecting Capsella bursa-pastoris world-wide. Fungal Divers 27:11–34
Choi Y-J, Shin H-D, Ploch S, Thines M (2008) Evidence for uncharted biodiversity in the Albugo candida complex, with the description of a new species. Mycol Res 112:1327–1334
Choi Y-J, Thines M, Shin H-D (2011a) A new perspective on the evolution of white blister rusts: Albugo s.str. (Albuginales, Oomycota) is not restricted to Brassicales but also present on Fabales. Org Divers Evol 11:192–199
Choi Y-J, Shin H-D, Ploch S, Thines M (2011b) Three new phylogenetic lineages are the closest relatives of the widespread species Albugo candida. Fungal Biol 115:598–607
Clay RP, Benhamou N, Fuller MS (1991) Ultrastructural detection of polysaccharides in the cell walls of two members of the Hyphochytriales. Mycol Res 95:1057–1064
Cock JM, Sterck L, Rouzé P, Scornet D, Allen AE, Amoutzias G, Anthouard V, Artiguenave F, Aury JM, Badger JH, Beszteri B, Billiau K, Bonnet E, Bothwell JH, Bowler C, Boyen C, Brownlee C, Carrano CJ, Charrier B, Cho GY, Coelho SM, Collén J, Corre E, Da Silva C, Delage L, Delaroque N, Dittami SM, Doulbeau S, Elias M, Farnham G, Gachon CM, Gschloessl B, Heesch S, Jabbari K, Jubin C, Kawai H, Kimura K, Kloareg B, Küpper FC, Lang D, Le Bail A, Leblanc C, Lerouge P, Lohr M, Lopez PJ, Martens C, Maumus F, Michel G, Miranda-Saavedra D, Morales J, Moreau H, Motomura T, Nagasato C, Napoli CA, Nelson DR, Nyvall-Collén P, Peters AF, Pommier C, Potin P, Poulain J, Quesneville H, Read B, Rensing SA, Ritter A, Rousvoal S, Samanta M, Samson G, Schroeder DC, Ségurens B, Strittmatter M, Tonon T, Tregear JW, Valentin K, von Dassow P, Yamagishi T, Van de Peer Y, Wincker P (2010) The Ectocarpus genome and the independent evolution of multicellularity in brown algae. Nature 465:617–621
Coffey MD (1975) Ultrastructural features of the haustorial apparatus of the white blister rust Albugo candida. Can J Bot 53:1285–1299
Coffey MD, Wilson U (1983) An ultrastructural study of the late-blight fungus Phytophthora infestans and its interaction with the foliage of two potato cultivars possessing different levels of general (field) resistance. Can J Bot 61:2669–2685
Coffey MD, Huss J, Peiman M. (2011) Molecular phylogeny of the marine Halophytophthora species: a work in progress. http://www.phytophthoradb.org/pdf/O11Coffey230.pdf. Accessed Aug 2012
Coker WC (1923) The saprolegniaceae with notes on other water molds. University of South Carolina Press, Chapel Hill, 201 pp
Collier J (2012) Why sequence four Labrinthulomycete species? JGI DOE Joint Genome Institute. http://www.jgi.doe.gov/sequencing/why/labrinthulomycete.html. Accessed 23 Sept 2012
Cook KL, Hudspeth DSS, Hudspeth MES (2001) A cox2 phylogeny of representative marine Peronosporomycetes (Oomycetes). Nova Hedwigia 122:231–243
Cooke DEL, Drenth A, Duncan JM, Wagels G, Brasier CM (2000) A molecular phylogeny of Phytophthora and related oomycetes. Fungal Genet Biol 30:17–32
Cooney EW, Barr DJS, Barstow WE (1985) The ultrastructure of the zoospore of Hyphochytrium catenoides. Can J Bot 63:497–505
Couch J (1935) A new saprophytic species of Lagenidium with notes on other species. Mycologica 27:376–387
Craigie JS, Correa JA (1996) Etiology of infections diseases of cultivated Chondrus crispus (Gigartinales, Rhodophyta). Hydrobiologia 327:97–104
Craven KD, Peterson PD, Windham DE, Mitchell TK, Martin SB (2005) Molecular identification of the turf grass rapid blight pathogen. Mycologia 97:160–166
Davidson JM, Werres S, Garbelotto M, Hansen EM, Rizzo DM (2003) Sudden oak death and associated diseases caused by Phytophthora ramorum. Plant Health Prog. doi:10.1094/PHP-2003-0707-01-DG
de Cock AWAM, Abad G, Lévesque A, Robideae G, Brouwer H (2012). Pythium: morphological taxonomy after the molecular revision. http://www.phytopthoradb.org/pdf/O31DeCock.pdf
Denoeud F, Roussel M, Noel B, Wawrzyniak I, Da Silva C, Diogon M, Viscogliosi E, Brochier-Armanet C, Couloux A, Poulain J, Segurens B, Anthouard V, Texier C, Blot N, Poirier P, Ng GC, Tan KSW, Artiguenave F, Jaillon O, Aury J-M, Delbac F, Wincker P, Vivarès CP, El Alaoui H (2011) Genome sequence of the stramenopile Blastocystis, a human anaerobic parasite. Genome Biol 12:R29
Dick MW (1969) Morphology and taxonomy of the Oomycetes, with special reference to Saprolegniaceae, Leptomitaceae and Pythiaceae I. Sexual reproduction. New Phytol 68:751–755
Dick MW (1973a) Leptomitales. In: Ainsworth CG, Sparrow FK, Sussman AL (eds) The fungi, an advanced treatise, vol IVb. Academic, New York, pp 145–158
Dick MW (1973b) Saprolegniales. In: Ainsworth CG, Sparrow FK, Sussman AL (eds) The fungi, an advanced treatise, vol IVb. Academic, New York, pp 113–144
Dick MW (1976) The ecology of aquatic phycomycetes. In: Jones EBG (ed) Recent advances in aquatic mycology. Elek Press, London, pp 513–542
Dick MW (1986) A new family and genus for two taxa previously assigned to Apodachlyella completa (JE Humphrey) H Indoh (Peromycetidae: Leptomitales). Bot J Linn Soc 93:225–229
Dick MW (1990) Phylum Oomycota. In: Margulis L, Corliss JO, Melkonian M, Chapman D (eds) Handbook of protoctista. Jones and Bartlett, Boston, pp 661–685
Dick MW (1997) The Myzocytiopsidaceae. Mycol Res 101:878–882
Dick MW (1998) The species and systematic position of Crypticola in the Peronosporomycetes, and new names for the genus Halocrusticida and species therein. Mycol Res 102:1062–1066
Dick MW (2001a) Straminipilous fungi. Kluwer, Dordrecht
Dick MW (2001b) Oomycota. In: McLaughlin D, McLaughlin E, Lemke CA (eds) The Mycota VII Part A. Systematics and evolution. Springer, Berlin, pp 48–72
Dick MW, Wong PTW, Clark G (1984) The identity of the oomycete causing “Kikuyu Yellows”, with a reclassification of the downy mildews. Bot J Linn Soc 89:171–197
Dick MW, Croft BJ, Magary RC, de Cock AWAM, Clark G (1988) A new genus of the Verrucalvaceae (Oomycetes). Bot J Linn Soc 99:97–113
Dick MW, Vick MC, Gibbings JG, Hedderson TA, Lopez Lastra CC (1999) 18S rDNA for species of Leptolegnia and other Peronosporomycetes: justification of the subclass taxa Saprolegniomycetidae and Peronosporomycetidae and division of the Saprolegniaceae sensu lato into the Leptolegniaceae and Saprolegniaceae. Mycol Res 103:1119–1125
Diéguez-Uribeondo J, Garcia MA, Cerenius LT, Kozubikova E, Ballesteros I, Windels C, Weiland J, Kator H, Soderhall K, Martın MP (2009) Phylogenetic relationships among plant and animal parasites, and saprotrophs in Aphanomyces (Oomycetes). Fungal Genet Biol 46:365–376
Diéz B, Pedrós-Alió C, Massana R (2001) Study of genetic diversity of eukaryotic picoplankton in different oceanic regions by small-subunit rRNA gene cloning and sequencing. Appl Environ Microbiol 67:2932–2941
Diggles BK (2001) A mycosis of juvenile spiny rock lobster, Jasus edwardsii (Hutton 1875) caused by Haliphthoros sp., and possible methods of chemical control. J Fish Dis 24:99–110
Domas A, Jaronski S, Hanton WK (1986) The zoospore and flagellar mastigonemes of Lagenidium giganteum (oomycetes, Lagenidiales). Mycologia 78:810–817
Domergue F, Abbadi A, Heinz E (2005) Relief for fish stocks: oceanic fatty acids in transgenic oilseeds synthesis. Trends Plant Sci 10:112–116
Dorrell RG, Smith AG (2011) Do red and green make brown? Perspectives on plastid acquisitions within Chromalveolates. Eukaryot Cell 10:856–868. doi:10.1128/EC.00326-10
Douhan GW, Olsen MW, Herrell A, Winder C, Wong F, Entwistle K (2009) Genetic diversity in Labyrinthula terrestris, a newly emergent plant pathogen, and the discovery of new Labyrinthulid organism. Mycol Res 113:1192–1199
Drechsler C (1940) Three fungi destructive to free-living terricolous nematodes. J Wash Acad Sci 30:240–254
Drechsler C (1960) Two root rot fungi closely related to Pythium ultimum. Sydowia 14:107–114
Dykova I, Fiala I, Dvorakova H, Peckova H (2008) Living together: the marine amoeba Thecamoeba hilla Schaeffer, 1926 and its endosymbiont Labyrinthula sp. Eur J Protistol 44:308–316
Dykstra MJ, Porter D (1984) Diplophrys marina, a new scale forming marine protist with labyrinthulid affinities. Mycologia 76:626–632
Fell JW, Master IM (1975) Phycomycetes (Phytophthora spp. nov. and Pythium sp. nov.) associated with degrading mangrove (Rhizophora mangle) leaves. Can J Bot 53:2908–2922
Förster H, Cummings MP, Coffey MD (2000) Phylogenetic relationships of Phytophthora species based on ribosomal ITS I DNA sequence analysis with emphasis on Waterhouse groups V and VI. Mycol Res 104:1055–1061
Frances SP, Sweeney AW, Humber RA (1989) Crypticola clavulifera gen. et sp. nov and Lagenidium giganteum: oomycetes pathogenic for dipterans infesting leaf axils in Australian rain forest. J Invertebr Pathol 54:103–111
Fuller MS (1990) Phylum Hyphochytriomycota. In: Corliss JO, Margulies L, Melkonian M (eds) Handbook of protoctista. Jones and Bartlett, New York
Fuller MS (2001) Hyphochytriomycota. In: McLaughlin D, McLaughlin E, Lemke CA (eds) The Mycota VII. Part A: systematics and evolution. Springer, Berlin, pp 74–80
Fuller MS, Reichle R (1965) The zoospore and early development of Rhizidiomyces apophysatus. Mycologia 57:946–961
Gachon CMM, Strittmatter M, Muller DG, Kleintech J, Kupper FC (2009) Detection of differential host susceptibility to the marine oomycete pathogen Eurychasma dicksonii by real-time PCR: not all algae are equal. Appl Environ Microbiol 75:322–328. doi:10.1128/AEM.01885-08
García-Blázquez G, Göker M, Voglmayr H, Martin MP, Telleria MT, Oberwinkler F (2008) Phylogeny of Peronospora parasitic on Fabaceae based on ITS sequences. Mycol Res 112:502–512
Gaulin E, Jacquet C, Bottin A, Dumas B (2007) Root rot disease of legumes caused by Aphanomyces euteiches. Mol Plant Pathol 8:539–548
Gaulin E, Madoui A-M, Bottin A, Jacquet C, Mathe C, Couloux A, Wincker P, Dumas B (2008) Transcriptome of Aphanomyces euteiches: new oomycete putative pathogenicity factors and metabolic pathways. PLoS One 4:e1723
Gleason F (1976) The physiology of lower freshwater fungi. In: Jones EBG (ed) Recent advances in aquatic mycology. Elek Press, London, pp 543–572
Gleason FH, Letcher PM, Evershed N, McGee PA (2009) Recovery of growth of Hyphochytrium catenoides after exposure to environmental stress. J Eukaryot Microbiol 55:351–354
Glockling SL, Beakes GW (2000a) A review of the biology and infection strategies of biflagellate zoosporic parasites of nematodes. Fungal Divers 4:1–20
Glockling SL, Beakes GW (2000b) An ultrastructural study of sporidium formation during infection of a rhabditid nematode by large gun cells of Haptoglossa heteromorpha. J Invertebr Pathol 76:208–215
Glockling SL, Beakes GW (2000c) The ultrastructure of the dimorphic infection cells of Haptoglossa heteromorpha illustrates the developmental plasticity of infection apparatus structures in a nematode parasite. Can J Bot 78:1095–1107
Glockling SL, Beakes GW (2001) Two new species of Haptoglossa from N.E. England, H. northumbrica and H. polymorpha. Bot J Linn Soc 136:329–338
Glockling SL, Beakes GW (2006a) An ultrastructural study of development and reproduction in the nematode parasite Myzocytiopsis vermicola. Mycologia 98:7–21
Glockling SL, Beakes GW (2006b) Structural and developmental studies of Chlamydomyzium oviparasiticum from Rhabditis neamotes in culture. Mycol Res 110:1119–1126
Gobler CJ, Berry DL, Dyhrman ST, Wilhelm SW, Salamov A, Lobanov AV, Zhang Y, Collier JL, Wurch LL, Kustka AB, Dill BD, Shah M, VerBerkmoes NC, Kuo A, Terry A, Pangilinan J, Lindquist EA, Lucas S, Paulsen IT, Hattenrath-Lehmann TK, Talmage SC, Walker EA, Koch F, Burson AM, Marcoval MA, Tang YZ, Lecleir GR, Coyne KJ, Berg GM, Bertrand EM, Saito MA, Gladyshev VN, Grigoriev IV (2011) Niche of harmful alga Aureococcus anophagefferens revealed through ecogenomics. Proc Natl Acad Sci USA 108:4352–4357
Göker M, Voglmayr H, Riethmüller A, Weiss M, Oberwinkler F (2003) Taxonomic aspects of Peronosporaceae inferred from Bayesian molecular phylogenetics. Can J Bot 81:672–683
Göker M, Riethmüller A, Voglmayr H, Weiss M, Oberwinkler F (2004) Phylogeny of Hyaloperonospora based on nuclear ribosomal internal transcribed spacer sequences. Mycol Prog 3:83–94
Göker M, Voglmayr H, Riethmüller A, Oberwinkler F (2007) How do obligate parasites evolve? A multi-gene phylogenetic analysis of downy mildews. Fungal Genet Biol 44:105–122
Gotelli D, Hanson LC (1987) An ultrastructural investigation of the zoospore of Sapromyces androgynus (Oomycetes, Lagenidiales). Mycologia 78:810–817
Grenville-Briggs L, Gachon CM, Strittmater M, Sterck L, Kupper FC, van West P (2011) A molecular insight into algal-oomycete warfare: cDNA analysis of Ectocarpus siliculosus infected with the basal oomycete Eurychasma dicksonii. PLoS One 6:e24500
Gubler F, Hardham AR (1988) Secretion of adhesive material during encystment of Phytophthora cinnamomi zoospores characterized by immunogold labeling with monoclonal antibodies to components of peripheral vesicles. J Cell Sci 90:225–235
Guillou L, Chrétiennot-Dinet M-J, Boulben S, Moon SY, van der Staay S, Vaulot D (1999) Symbiomonas scintillans gen. et sp. nov. and Picophagus flagellatus gen. et sp. nov. (Heterokonta): two new heterotrophic flagellates of picoplanktonic size. Protist 150:383–398
Haas BJ, Kamoun S, Zody MC, Jiang RHY, Handsaker RE, Cano LM, Grabherr M, Kodira CD, Raffaele S, Torto-Alalibo T, Bozkurt TO, Ah-Fong AMV, Alvarado L, Anderson VL, Armstrong MR, Avrova A, Baxter L, Beynon J, Boevink PC, Bollmann SR, Bos JIB, Bulone V, Cai G, Cakir C, Carrington JC, Chawner M, Conti L, Costanzo S, Ewan R, Fahlgren N, Fischbach MA, Fugelstad J, Gilroy EM, Gnerre S, Green PJ, Grenville-Briggs LJ, Griffith J, Grünwald NJ, Horn K, Horner NR, Hu C-H, Huitema E, Jeong D-H, Jones AME, Jones JDG, Jones RW, Karlsson EK, Kunjeti SG, Lamour K, Liu Z, Ma LJ, MacLean D, Chibucos MC, McDonald H, McWalters J, Meijer HJG, Morgan W, Morris PF, Munro CA, O'Neill K, Ospina-Giraldo M, Pinzón A, Pritchard L, Ramsahoye B, Ren Q, Restrepo S, Roy S, Sadanandom A, Savidor A, Schornack S, Schwartz DC, Schumann UD, Schwessinger B, Seyer L, Sharpe T, Silvar C, Song J, Studholme DJ, Sykes S, Thines M, van de Vondervoort PJI, Phuntumart V, Wawra S, Weide R, Win J, Young C, Zhou S, Fry W, Meyers BC, van West P, Ristaino J, Govers F, Birch PRJ, Whisson SC, Judelson HS, Nusbaum C (2009) Genome sequence and analysis of the Irish potato famine pathogen Phytophthora infestans. Nature 461:393–398
Hackett JD, Yoon HS, Li S, Reyes-Prieto A, Rümmele SE, Bhattacharya D (2007) Phylogenomic analysis supports the monophyly of cryptophytes and haptophytes and the association of Rhizaria with Chromalveolates. Mol Biol Evol 24:1702–1713
Hakariya M, Masuyama N, Saikawa M (2002) Shooting of sporidium by “gun” cells in Haptoglossa heterospora and H. zoospora and secondary zoospore formation in H. zoospora. Mycoscience 43:119–125
Hakariya M, Hirose D, Tokumasu S (2007) A molecular phylogeny of Haptoglossa species, terrestrial Peronosporomycetes (oomycetes) endoparasitic on nematodes. Mycoscience 48:169–175
Hakariya M, Hirose D, Tokumasu S (2009) Molecular phylogeny of terrestrial holocarpic endoparasitic Peronosporomycetes Haptoglossa spp. inferred from 18S rDNA. Mycoscience 50:130–136
Hallett IC, Dick MW (1986) Fine structure of zoospore cyst ornamentation in the Saprolegniaceae and Pythiaceae. Trans Br Mycol Soc 86:457–463
Hardham AR (1987) Microtubules and the flagellar apparatus in zoospores and cysts of the fungus Phytophthora cinnamomi. Protoplasma 137:109–124
Hardham AR (2005) Pathogen profile: Phytophthora cinnamomi. Mol Plant Pathol 6:598–604
Hatai K (2012) Diseases of fish and shellfish caused by marine fungi. Raghukumar C (ed) Biology of marine fungi. Prog Mol Subcell Biol 53:15–52
Hatai K, Bian BZ, Baticados MCL, Egusa S (1980) Studies on the fungal diseases in crustaceans. II Haliphthoros phillippinensis sp. nov. isolated from cultivated larvae of the jumbo tiger prawn (Penaseus monodon). Trans Mycol Soc Jpn 21:47–55
Hatai K, Rhoobunjongde W, Wada S (1992) Haliphthoros milfordensis isolated from gills of juvenile kuruma prawn (Penaeus japonicus) with black gill disease. Trans Mycol Soc Jpn 33:185–192
Hausner G, Belkhiri A, Klassen GR (2000) Phylogenetic analysis of the small ribosomal subunit RNA gene of the hyphochytrid Rhizidiomyces apophysatus. Can J Bot 78:124–128
Held AA (1981) Rozella and Rozellopsis: naked endoparasitic fungi which dress-up as their hosts. Bot Rev 47:451–555
Heller A, Thines M (2009) Evidence for the importance of enzymatic digestion of epidermal walls during subepidermal sporulation and pustule opening in white blister rusts (Albuginaceae). Mycol Res 113:657–667
Hesse M, Kusel-Fetzmann E, Carniel K (1989) Life cycle and ultrastructure of Ducellieria chodati (Oomycetes). Plant Syst Evol 165:1–15
Hickey EL, Coffey MD (1977) A fine-structural study of the pea downy mildew fungus Peronospora pisi in its host Pisum sativum. Can J Bot 55:2845–2858
Ho HH, Jong SC (1990) Halophytophthora gen. nov., a new member of the family Pythiaceae. Mycotaxon 19:377–382
Ho HH, Nakagiri A, Newell SY (1992) A new species of Halophytophthora form Atlantic and Pacific subtropical islands. Mycologia 84:548–554
Holloway SA, Heath IB (1977a) An ultrastructural analysis of the changes in organelle arrangement and structure between the various spore types of Saprolegnia. Can J Bot 55:1328–1339
Holloway SA, Heath IB (1977b) Morphogenesis and the role of microtubules in synchronous populations of Saprolegnia zoospores. Exp Mycol 1:9–29
Honda D, Yokochi T, Nakahara T, Ragukumar S, Nakagiri A, Schaimann K, Higashirhara T (1999) Molecular phylogeny of labyrinthulids and thraustochytrids based on the sequencing of the 18S ribosomal RNA gene. J Eukaryot Microbiol 46:637–647
Huang J-H, Chen C-Y, Lin Y-H, Ann P-J, Huang H-C, Chung W-H (2012) Six new species of Pythiogeton in Taiwan, with an account of the molecular phylogeny of this genus. Mycoscience 54:130–147
Hudspeth DSS, Nadler SA, Hudspeth MES (2000) A cox II molecular phylogeny of the Peronosporomycetes. Mycologia 92:674–684
Hudspeth DSS, Stenger D, Hudspeth MES (2003) A cox2 phylogenetic hypothesis for the downy mildews and white rusts. Fungal Divers 13:47–57
Huizar HE, Aronson JM (1986) Aspects of cellulin deposition and chitin biosynthesis in the Leptomitaceae. Mycologia 78:489–492
Hulvey JP, Padgett DE, Bailey JC (2007) Species boundaries within the Saprolegnia (Saprolegniales, Oomycota) based on morphological and DNA sequence data. Mycologia 99:421–429
Hulvey JP, Telle S, Nigrelli L, Lamour K, Thines M (2010) Salisapiliaceae—a new family of oomycetes from marsh grass litter of southeastern North America. Persoonia 25:109–116
Inaba S, Hariyama S (2006) The phylogenetic studies on the genus Cornumyces (Oomycetes) based on the nucleotide sequences of the nuclear large subunit ribosomal RNA and the mitochondrially-encoded cox2 genes. In: 8th International mycological congress handbook and abstracts, IMC Cairns, p 330
Inaba S, Tokumasu S (2002) Phylogenetic relationships between the genus Saprolegnia and related genera inferred from ITS sequences. Abstracts of the 7th international mycological congress, Oslo IMC7, p 687
James TY, Porter TM, Wallace Martin W (2014) Blastocladiomycota, chapter 7. In: McLaughlin DJ, Spatafora JW (eds) Systematics and evolution. Springer, Heidelberg
Jiang RHY, Tyler BM (2012) Mechanisms and evolution of virulence in oomycetes. Annu Rev Phytopathol 50:14.1–13.24. doi:10.1146/annrev-phyto-081211-172912
Jiang RHY, de Bruijn I, Haas BJ, Belmonte R, Lobach L, Christie J, van den Ackerveken G, Bottin A, Bulone V, Dı´az-Moreno SM, Dumas B, Fan L, Gaulin E, Govers F, Grenville-Briggs LJ, Horner NR, Levin JZ, Mammella M, Meijer Harold JG, Morris P, Nusbaum C, Oome S, Phillips AJ, van Rooyen D, Rzeszutek E, Saraiva M, Secombes CJ, Seidl MF, Snel B, Stassen JHM, Sykes S, Tripathy S, van den Berg H, Vega-Arreguin JC, Young SK WS, Zeng Q, Dieguez-Uribeondo J, Russ C, Tyler BM, van West P (2013) Distinctive expansion of potential virulence genes in the genome of the oomycete fish pathogen Saprolegnia parastica. PLoS Genet 9(6), e1003272. doi:10.1371/journal.pgen.100327
Johnson TW (1957) Resting spore development in the marine phycomycete Anisolpidium ectocarpii. Am J Bot 44:875–878
Johnson TW (1966) A Lagenidium in the marine diatom Coscinodiscus centralis. Mycologica 58:131–135
Johnson TW (1972) Aquatic fungi of Iceland: Olpidiopsis Cornu. J Elisha Mitchell Sci Soc 88:83–91
Johnson TW, Seymour RL, Padgett DE (2002) Biology and systematics of the Saprolegniaceae. http://dl.uncw.edu/digilib/biology/fungi/taxonomy%20and%20systematics/padgett%20book/. Accessed Apr 2008
Jones GM, O’Dor RK (1983) Ultrastructural observations on a thraustochytrid fungus parasitic in the gills of squid (Illex illecebrosus Lesueur). J Parasitol 69:903–911
Jones MDM, Forn I, Gadelha C, Egan MJ, Bass D, Massana R, Richards TA (2011) Discovery of novel intermediate forms redefines the fungal tree of life. Nature 474:200–203
Judelson HS, Ah-Fong AMV (2009) Progress and challenges in oomycete transformation. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley, New York, pp 435–453
Karling JS (1942) The simple holocarpic biflagellate phycomycetes. Columbia University Press, New York
Karling JS (1943) The life history of Anisolpidium ectocarpii gen. nov. et sp. nov., and a synopsis and classification of other fungi with anteriorly uniflagellate zoospores. Am J Bot 30:637–648
Karling JS (1977) Inconographicum iconarum, 2nd edn. Cramer, Vaduz
Karling JS (1981) Predominantly holocarpic and eucarpic simple biflagellate phycomycetes. J Cramer, Vaduz
Kazama FY (1980) The zoospore of Schizochytrium aggregatum. Can J Bot 58:2434–2446
Keeling PJ (2009) Chromalveolates and the evolution of plastids by secondary endosymbiosis. J Eukaryot Microbiol 56:1–8
Kemen E, Jones JDG (2012) Obligate biotroph parasitism: can we link genomes and lifestyles. Trends Plant Sci 17:448–457
Kemen E, Gardiner A, Schultz-Larsen T, Kemen AC, Balmuth AL et al (2011) Gene gain and loss during evolution of obligate parasitism in the white rust pathogen of Arabidopsis thaliana. PLoS Biol 9:e1001094. doi:10.1371/journal.pbio.1001094
Kerwin JL, Washino RK (1983) Sterol induction of sexual reproduction in Lagenidium giganteum. Exp Mycol 7:109–115
King CA (1903) Observations on the cytology of Araiospora pulchra Thaxter. Proc Boston Soc Nat Hist 31:11–15
Kobayashi T, Sakaguchi K, Matsuda T, Abe R, Hama Y et al (2011) Increase in eicosapentaenoic acid in thraustochytrids through thraustochytrid ubiquitin promoter-driven expression of a fatty acid 5 desaturase gene. Appl Environ Microbiol 77:3870–3876
Krajaejun T, Khositnithikul R, Lerksuthirat T, Lowhnoo T, Rujirwat T et al (2011) Expressed sequence tags reveal genetic diversity and putative virulence factors of the pathogenic oomycete Pythium insidiosum. Fungal Biol 115:683–696
Krings M, Dotzler N, Taylor TN, Galtier J (2010) A fungal community in plant tissue from the Lower Coal Measures (Langsettian, Lower Pennsylvanian) of Great Britain. Bull Geosci 85:679–690
Krings M, Taylor TN, Dotzler N (2011) The fossil record of the Peronosporomycetes (Oomycota). Mycologia 103:445–457
Kroon LMM, Bakker FT, van den Bosch GBM, Bonants PJM, Flier WG (2004) Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences. Fungal Genet Biol 41:766–782
Kroon LMM, Brouwer H, de Cock WAM, Govers F (2012) The genus Phytophthora anno 2012. Phytopathology 102:348–364
Kühn SF, Medlin LK, Eller G (2004) Phylogenetic position of the parasitoid nanoflagellate Pirsonia inferred from nuclear-encoded small subunit ribosomal DNA and a description of Pseudopirsonia n. gen. and Pseudopirsonia mucosa (Drebes) comb. nov. Protist 155:143–156
Küpper FC, Müller DG (1999) Massive occurrence of the heterokont and fungal parasites Anisolpidium, Eurychasma and Chytridium in Pylaiella litoralis (Ectocarpales, Phaeophyceae). Nova Hedwig 69:381–389
Küpper FC, Maier I, Müller DG, Loiseaux-de Goer S, Guillou L (2006) Phylogenetic affinities of two eukaryotic pathogens of marine macroalgae, Eurychasma dicksonii (Wright) Magnus and Chytridium polysiphoniae Cohn. Cryptogam Algol 27:165–184
Lamour KH, Win J, Kamoun S (2007) Oomycete genomics: new insights and future directions. FEMS Microbiol Lett 274:1–8
Lara E, Belbahri L (2011) SSU rRNA reveals major trends in oomycete evolution. Fungal Divers 49:93–100
Lara E, Moreira D, Lόpez-García P (2009) The environmental clade LKM11 and Rozella form the deepest branching clade of fungi. Protist 161(1):116–21. doi:10.1016/j.protis.2009.06.005
Leander CA, Porter D (2001) The Labyrinthulomycota is comprised of three distinct lineages. Mycologia 93:459–464
Leander CA, Porter D, Leander BS (2004) Comparative morphology and molecular phylogeny of aplanochytrids (Labryrinthulomycota). Eur J Protist 40:317–328
Léclerc MC, Guillot J, Deville M (2000) Taxonomic and phylogenetic analysis of Saprolegniaceae (Oomycetes) inferred from LSU rDNA and ITS sequence comparisons. Antonie Van Leeuwenhoek 77:369–377
Lee HY, Aronson JM (1975) Composition of cellulin, a unique chitin-glucan granules of the fungus Apodachlya sp. Arch Microbiol 102:203–208
Lehnen LP, Powell MJ (1989) The role of kinetosome-associated organelles in the attachment of encysting secondary zoospores of Saprolegnia ferax to substrates. Protoplasma 149:163–174
Leipe DD, Tong SM, Goggin CL, Slemenda SB, Pieniazek NJ, Sogin ML (1994) 16S-like rDNA sequences from Developayella elegans, Labyrinthuloides haliotidis, and Proteromonas lacertae confirm that the stramenopiles are a primarily heterotrophic group. Eur J Protistol 33:369–377
Levenfors JP, Fatehi J (2009) Molecular characterization of Aphanomyces species associated with legumes. Mycol Res 108:682–689
Lévesque CA (2011) Fifty years of oomycete research—from consolidation to evolutionary and genomic exploration. Fungal Divers 50:35–46
Lévesque CA, de Cock AW (2004) Molecular phylogeny and taxonomy of the genus Pythium. Mycol Res 108:1363–1383
Lévesque CA, Brouwer H, Cano L, Hamilton JP, Holt C, Huitema E, Raffaele S, Robideau GP, Thines M, Win J, Zerillo MM, Beakes GW, Boore JL, Busam D, Dumas B, Ferriera S, Fuerstenberg SI, Gachon CMM, Gaulin E, Govers F, Grenville-Briggs L, Horner N, Hostetler J, Jiang RHY, Johnson J, Krajaejun T, Lin H, Meijer HJG, Moore B, Morris P, Phuntmart V, Puiu D, Shetty J, Stajich JE, Tripathy S, Wawra S, van West P, Whitty BR, Coutinho PM, Henrissat B, Martin F, Thomas PD, Tyler BM, De Vries RP, Kamoun S, Yandell M, Tisserat N, Buell CR (2010) Genome sequence of the necrotrophic plant pathogen Pythium ultimum reveals original pathogenicity mechanisms and effector repertoire. Genome Biol 11:R73
Lilley JH, Hart D, Panywachira V, Kanchanakhan S, Chinabut S, Soderhall K, Cerenius L (2003) Molecular characterization of the fish-pathogenic fungus Aphanomyces invadans. J Fish Dis 26:263–275
Links MG, Holub E, Jiang RHY, Sharpe AG, Hegedus D et al (2011) De novo sequence assembly of Albugo candida reveals a small genome relative to other biotrophic oomycetes. BMC Genomics 12:503
Longcore JE, Brooks JL, Homola L (1987) Apodachyella re-examined. Mycologia 79:621–626
Martens C, Vandepoele K, Van de Peer Y (2008) Whole-genome analysis reveals molecular innovations and evolutionary transitions in chromalveolate species. Proc Natl Acad Sci USA 105:3427–3432
Martin WW (1975) Aphanomycopsis sexualis a new parasite of midge eggs. Mycologia 67:923–933
Martin WW (1977) The development and possible relationships of a new Atkinsiella parasite in insect eggs. Am J Bot 64:766–769
Martin FN (2000) Phylogenetic relationships among some Pythium species inferred from sequence analysis of the mitochondrially encoded cytochrome oxidase II gene. Mycologia 92:711–727
Martin RW, Miller CE (1986) Ultrastructure of sexual reproduction in Olpidiopsis varians. Mycologia 78:359–370
Martin FN, Tooley PW (2003) Phylogenetic relationships among Phytophthora species inferred from sequence analysis of mitochondrially encoded cytochrome oxidase I and II genes. Mycologia 95:269–284
Martin FN, Tooley PW (2008) Phylogenetic relationships of Phytophthora ramorum, P. nemorosa and P. pseudosyringae, three species recovered from areas in California with sudden oak death. Mycol Res 107:1379–1391
Maruyama S, Matsuzaki M, Misawa K, Nozaki H (2009) Cyanobacterial contribution to the genomes of the plastid lacking protists. BMC Evol Biol 9:197. doi:10.1186/1471-2148-9-197
Massana R, Guillou L, Diez B, Pedró-Alió C (2002) Unveiling the organisms behind novel eukaryotic ribosomal DNA sequences from the ocean. Appl Environ Microbiol 68:4554–4558
Massana R, Castresana J, Balagué V, Guillou L, Romari K, Groisillier A, Valentin K, Pedró-Alió C (2004) Phylogenetic and ecological analysis of novel marine stramenopiles. Appl Environ Microbiol 70:3528–3534
Massana R, Terrado R, Forn I, Lovejoy C, Pedró-Alió C (2006) Distribution and abundance of uncultured heterotrophic flagellates in the world oceans. Environ Microbiol 8:1515–1522
Maurosa Y, Morimoto K, Sano A, NishimuraK HK (2009) A new peronosporomycete, Halioticida noduliformans gen.et sp. nov., isolated from white nodules in the abalone, Haliotis spp. from Japan. Mycoscience 50:106–115
Mendoza L (2009) Pythium insidiosum and mammalian hosts. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley-Blackwell, Ann Arbor, pp 387–406
Migula M (1897) Die Characeen – Deutschlands. Osterreichs und der Schweiz. Rabenhorsts Cryptogamenflora 5. Verlag E. Kummer, Leipzig, 765 pp
Miller MR, Nichols PD, Carter CG (2007) Replacement of fish oil with thraustochytrid Schizochytrium sp. L oil in Atlantic salmon parr (Salmo salar L) diets. Comp Biochem Physiol 148:382–392
Mims CWR, Richardson EA (2002) Ultrastructure of the zoosporangia of Albugo ipomoeae-panduratae as revealed by conventional chemical fixation and high pressure freezing followed by freeze substitution. Mycologia 95:1–10
Mirzaee MR, Ploch S, Runge F, Telle S, Nigrelli L, Thines M (2013) A new presumably widespread species of Albugo parasitic to Strigosella spp. (Brassicaceae). Mycol Prog 12:45–52
Molloy DP, Glockling SL, Siegfried CA, Beakes GW, James TY, Mastitsky SE, Wurdak E, Giamberini L, Gaylo MJ, Nemeth MJ (2014) Aquastella gen.nov.: a new genus of saprolegniaceous rotifer parasites related to Aphanomyces, with unique sporangial outgrowths. Fungal Biol (in press). doi: 10.1016/j.funbio.2014.01.007
Money NP (1998) Why the oomycetes have not stopped being fungi. Mycol Res 102:767–768
Moore D, Robson GD, Trinci APJ (2011) 21st century guide to Fungi. Cambridge University Press, Cambridge
Moreira D, López-Garcia P (2002) The molecular ecology of microbial eukaryotes unveils a hidden world. Trends Microbiol 10:31–38
Morgan W, Kamoun S (2007) RXLR effectors of plant pathogenic oomycetes. Curr Opin Microbiol 10:332–338
Moss ST (1985) An ultrastructural study of taxonomically significant characters of the Thraustochytriales and Labyrinthulales. Bot J Linn Soc 91:329–357
Moss ST (1986) Biology and phylogeny of the Labyrinthulales and Thraustochytriales. In: Moss ST (ed) The biology of marine fungi. Cambridge University Press, Cambridge, pp 105–129
Muehlstein LK, Porter D (1991) Labyrinthula zosterae sp. nov., the causative agent of wasting disease of eelgrass, Zostera marina. Mycologia 83:180–191
Nakagiri A (2002a) Diversity and phylogeny of Halophytophthora (Oomycetes). Abstract of the 7th international mycological congress, Oslo, 55, p 19
Nakagiri A (2002b) Halophytophthora species from tropical and subtropical mangroves: a review of their characteristics. In: Hyde KD (ed) Fungi in marine environments, vol 7, Fungal diversity research series. Fungal Diversity Press, Hong Kong, pp 1–14
Nakagiri A, Newell SY, Ito T (1994) Two new Halophytophthora species, H. tartarea and H. masteri, from intertidal decomposing leaves in salt marsh and mangrove regions. Mycoscience 35:223–232
Nechwatal J, Mendgen K (2005) Pythium litorale sp. nov., a new species from the litoral of Lake Constance, Germany. FEMS Microbiol Lett 255:96–101
Newell SY, Cefalu R, Fell JW (1977) Myzocytium, Haptoglossa, and Gonimochaete (fungi) in littoral marine nematodes. Bull Mar Sci 27:177–207
Newhook FJ, Podger FD (1972) The role of Phytophthora cinnamomi in Australian and New Zealand forests. Annu Rev Phytopathol 10:299–325
Nigrelli L, Thines M (2013) Tropical oomycetes in the German Bight—climate warming or overlooked diversity? Fungal Ecol 6:152–160
Olsen MW (2007) Labyrinthula terrestris: a new pathogen of cool-season turfgrasses. Mol Plant Pathol 8:817–820
Overton SV, Tharp TP, Bland CE (1983) Fine structure of swimming, encysting, and germinating spores of Haliphthoros milfordensis. Can J Bot 61:1165–1177
Panabières F, Ponchet M, Allasia V, Cardin L, Ricci P (1996) Characterization of border species among Pythiaceae: several Pythium isolates produce elicitins, typical proteins from Phytophthora spp. Mycol Res 101:1459–1468
Patterson DJ (1989) Chromophytes from a protistan perspective. In: Green JP, Leadbeater BSC, Diver WL (eds) The chromophyte algae: problems and perspectives. Clarendon, Oxford, pp 357–379
Perkins FO (1976) Fine structure of lower marine and estuarine fungi. In: Jones EBG (ed) Recent advances in aquatic mycology. Elek Press, London, pp 513–542
Perkins FO, Amon JP (1969) Zoosporulation in Labyrinthula sp., an electron microscope study. J Protozool 16:235–256
Petersen AB, Rosendahl S (2000) Phylogeny of the Peronosporomycetes (Oomycota) based on partial sequences of the large ribosomal subunit (LSU rDNA). Mycol Res 104:1295–1303
Phillips AJ, Anderson VL, Robertson EJ, Secombes CJ, van West P (2008) New insights into animal pathogenic oomycetes. Trends Microbiol 16:13–19
Ploch S, Thines M (2011) Obligate biotrophic pathogens of the genus Albugo are widespread asymptomatic endophytes in natural populations of Brassicaceae. Mol Ecol 20:3692–3699
Ploch S, Choi Y-J, Rost C, Shin H-D, Schilling E, Thines M (2010) Evolution of diversity in Albugo is driven by high host specificity and multiple speciation events on closely related Brassicaceae. Mol Phylogenet Evol 57:812–820
Ploch S, Telle S, Choi Y-J, Cunnington J, Priest M, Rost C, Shin H-D, Thines M (2011) The molecular phylogeny of the white blister rust genus Pustula reveals a case of underestimated biodiversity with several undescribed species on ornamentals and crop plants. Fungal Biol 115:214–219
Polglase JL (1980) A preliminary report on the Thraustochytrid(s) and Labyrinthulid(s) associated with a pathological condition in the lesser octopus Eledone cirrhosa. Bot Mar 23:699–706
Porter D (1990) Phylum Labyrinthulomycota. In: Margulis L, Corliss JO, Melkonian M, Chapman DJ (eds) Handbook of Protoctista. Jones and Bartlett, Boston, pp 388–398
Powell MJ, Letcher PM (2014) Chytridiomycota, Monoblepharidomycota and Neocallimastigomycota, chapter 6. In: McLaughlin DJ, Spatafora JW (eds) Systematics and evolution. Springer, Heidelberg
Pueschel CM, van der Meer JP (1985) Ultrastructure of the fungus Petersenia palmariae (Oomycota) parasitic on the alga Palmaria molis (Rhodophyceae). Can J Bot 63:409–418
Qutob D, Kamoun S, Gijzen M (2002) Expression of a Phytophthora sojae necrosis-inducing protein occurs during the transition from biotrophy to necrotrophy. Plant J 32:361–373
Raffaele S, Win J, Cano LM, Kamoun S (2010) Analyses of genome and gene expression reveal novel virulence factors in the secretome of Phytophthora infestans. BMC Genomics 11:637
Raghukumar C (1980) An ultrastructural study of the marine diatom Licmophora hyalina and its parasite Ectrogella perforans. II. Development of the fungus in its host. Can J Bot 58:2557–2574
Raghukumar S (2002a) Bacterivory: a novel dual role for thraustochytrids in the sea. Mar Biol 113:165–169
Raghukumar S (2002b) Ecology of marine protists, the Labyrinthulomycetes (Thraustochytrids and Labyrinthulids). Eur J Protistol 38:127–145
Raghukumar S (2008) Thraustochytrid marine protists: production of PUFAs and other emerging technologies. Mar Biotechnol 10:631–640
Randall TA, Dwyer RA, Huitema E, Beyer K, Cvitanich C, Kelkar H, Ah Fong AMV, Gates K, Roberts S, Yatzkan E, Gaffney T, Law M, Testa A, Torto-Alalibo T, Zhang M, Zheng L, Mueller E, Windass J, Binder A, Birch PRJ, Gisi U, Govers F, Gow NA, Mauch F, van West P, Waugh ME, Yu J, Boller T, Kamoun S, Lam ST, Judelson HS (2005) Large-scale gene discovery in the oomycete Phytophthora infestans reveals likely components of phytopathogenicity shared with true fungi. Mol Plant Microbe Interact 18:229–243
Randolph LR, Powell MJ (1992) Ultrastructure of zoospores of the oomycete Apodachlya pyrifera. Mycologia 84:768–780
Reeb VC, Peglaer MT, Yoon HS, Bai JR, Wu M, Shia P et al (2009) Interrelationships of chromalveolates within a broadly sampled tree of photosynthetic protists. Mol Phylogenet Evol 53:202–211
Richards TA, Dacks JB, Jenkinson JM, Thornton CR, Talbot NJ (2006) Evolution of filamentous pathogens: gene exchange across eukaryote kingdoms. Curr Biol 16:1857–1864
Richards TA, Soanes DM, Jones MDM, Vasieva O, Leonard G, Paszkiewicz K, Foster PG, Hall N, Talbot NJ (2011) Horizontal gene transfer facilitated the evolution of plant parasitic mechanisms in the oomycetes. Proc Natl Acad Sci USA 108:15258–63
Richards TA, Jones MD, Leonard G, Bass G (2012) Marine fungi: their ecology and molecular diversity. Ann Rev Mar Sci 4:495–522
Riethmüller A, Weiss M, Oberwinkler F (1999) Phylogenetic studies of Saprolegniomycetidae and related groups based on nuclear large subunit ribosomal DNA sequences. Can J Bot 77:1790–1800
Riethmüller A, Voglmayr H, Göker M, Weiss M, Oberwinkler F (2002) Phylogenetic relationships of the downy mildews (Peronosporales) and related groups based on nuclear large subunit ribosomal DNA sequences. Mycologia 94:834–849
Riethmüller, Grundel A, Langer E (2006) The seasonal occurrence of the sewage fungus Leptomitus lacteus Roth C. Agard in stagnant and running waters of different chemistry of Hesse and Thuringia, Germany. Acta Hydrochem Hydrobiol 34:58–66
Riisberg I, Orr RJ, Kluge R, Shalchian-Tabrizi K, Bowers HA, Patil V, Edvardsen B, Jakobsen KS (2009) Seven gene phylogeny of heterokonts. Protist 160:191–204
Robb EJ, Barron GL (1982) Nature’s ballistic missile. Science 218:1221–1222
Robold AV, Hardham AR (2004) Production of monoclonal antibodies against peripheral-vesicle proteins in zoospores of Phytophthora nicotianae. Protoplasma 223:121–132
Robold AV, Hardham AR (2005) During attachment Phytophthora spores secrete proteins containing thrombospondin type 1 repeats. Curr Genet 47:307–315
Runge F, Thines M (2011) Host matrix has major impact on morphology of Pseudoperonospora cubensis. Eur J Plant Pathol 129:147–156
Runge F, Thines M (2012) Re-evaluation of host specificity of the closely related species Pseudoperonospora humuli and P. cubensis. Plant Dis 96:55–61
Runge F, Telle S, Ploch S, Savory E, Day B, Sharma R, Thines M (2011a) The inclusion of downy mildews in a multi-locus-dataset and its reanalysis reveals a high degree of paraphyly in Phytophthora. IMA Fungus 2:163–171
Runge F, Choi Y-J, Thines M (2011b) Phylogenetic investigations in the genus Pseudoperonospora reveal overlooked species and cryptic diversity in the P. cubensis species cluster. Eur J Plant Pathol 129:135–146
Runge F, Ndambi B, Thines M (2012) Which morphological characteristics are most influenced by the host matrix in downy mildews? A case study in Pseudoperonospora cubensis. PLoS One 7:e44863
Schnepf E, Deichgräber G, Drebes G (1977) Development and ultrastructure of the marine, parasitic oomcete, Lagenisma coscinodisci (Lagenidiales): sexual reproduction. Can J Bot 56:1315–1325
Schnepf E, Deichgräber G, Drebes G (1978a) Development and ultrastructure of the marine, parasitic oomycete, Lagenisma coscinodisci Drebes (Lagenidiales). The infection. Arch Microbiol 116:133–139
Schnepf E, Deichgräber G, Drebes G (1978b) Development and ultrastructure of the marine parasitic oomycete Lagenisma coscinodisci Drebes (Lagenidiales) Thallus, zoosporangium, mitosis and meiosis. Arch Microbiol 116:121–132
Schroeder KL, Martin FN, de Cock AWAM, Levesque CA, Speis CDJ, Okubara PA, Paulitz TC (2012) Molecular detection and quantification of Pythium species—evolving taxonomy, new tools and challenges. Plant Dis 97:4–20
Schurko AM, Mendoza L, Lévesque CA, Désaulniers NL, de Cock AWAM, Klassen GR (2004) A molecular phylogeny of Pythium insidiosum. Mycol Res 107:537–544
Seidl MF, den Ackerveken V, Govers F, Snel B (2012) Reconstruction of oomycete genome evolution identifies differences in evolutionary trajectories leading to present-day large gene families. Genome Biol Evol 4:199–211
Sekimoto S (2008) The taxonomy and phylogeny of the marine holocarpic oomycetes. PhD Thesis, Graduate School of Natural Sciences, Konan University, Kobe, Japan
Sekimoto S, Hatai K, Honda D (2007) Molecular phylogeny of an unidentified Haliphthoros-like marine oomycete and Haliphthoros milfordensis inferred from nuclear-encoded small and large subunit rDNA genes and mitochondrial-encoded cox2 gene. Mycoscience 48:212–221
Sekimoto S, Beakes GW, Gachon CMM, Müller DG, Küpper FC, Honda D (2008a) The development, ultrastructural cytology, and molecular phylogeny of the basal oomycete Eurychasma dicksonii, infecting the filamentous phaeophyte algae Ectocarpus siliculosus and Pylaiella littoralis. Protist 159:401–412
Sekimoto S, Yokoo K, Kawamura Y, Honda D (2008b) Taxonomy, molecular phylogeny, and ultrastructural morphology of Olpidiopsis porphyrae sp. nov. (Oomycetes, stramenopiles), a unicellular obligate endoparasite of Porphyra spp. (Bangiales, Rhodophyta). Mycol Res 112:361–374
Sekimoto S, Kochkova TA, West JA, Beakes GW, Honda D (2009) Olpidiopsis bostrychiae: a new species endoparasitic oomycete that infects Bostrychia and other red algae. Phycologia 48:460–472
Shanor L, Olive LS (1943) Notes on Araiospora streptandra. Mycologia 34:536–542
Sims PA, Mann DG, Medlin LK (2006) Evolution of the diatoms: insights from fossil, biological and molecular data. Phycologia 45:361–402
Soanes DM, Richards TA, Talbot NJ (2007) Insights from sequencing fungal and oomycete genomes: what can we learn about plant disease and the evolution of pathogenicity. Plant Cell 19:3318–3326
Soylu EM, Soylu S, Keshavarzi M, Brown I, Mansfield JW (2003) Ultrastructural characterization of the interactions between Arabidopsis thaliana and Albugo candida. Physiol Mol Plant Pathol 63:201–211
Sparrow FK (1934) Observations on marine phycomycetes collected in Denmark. Dansk Bot Ark 8:1–24
Sparrow FK (1960) Aquatic phycomycetes, 2nd edn. University of Michigan Press, Ann Arbor
Sparrow FK (1973) The peculiar marine phycomycete Atkinsiella dubia from crab eggs. Arch Mikrobiol 93:137–144
Sparrow FK (1974) Observations on two uncommon fungi. Veroff Inst Meeresf Bremerh Suppl 5:9–18
Sparrow FK (1973a) Mastigomycotina. In: Ainsworth GC, Sparrow FK, Sussman AS (eds) The fungi, vol 4b. Academic, New York, pp 61–73
Sparrow FK (1973b) Chytridiomycetes. Hyphochytridiomycetes. In: Ainsworth GC, Sparrow FK, Sussman AS (eds) The fungi, vol 4b. Academic, New York, pp 85–110
Sparrow FK (1973c) Lagenidiales. In: Ainsworth GC, Sparrow FK, Sussman AS (eds) The fungi, vol 4b. Academic, New York, pp 159–164
Sparrow FK (1976) The present status of classification in biflagellate fungi. In: Gareth-Jones EB (ed) Recent advances in aquatic mycology. Elek Science, London, pp 213–222
Sparrow FK (1977) Rhizidiomycopsis on azygospores of Gigaspora margarita. Mycologia 69:1053–1058
Spencer MA, Vick MC, Dick MW (2002) Revision of Aplanopsis, Pythiopsis, and ‘subcentric’ Achlya species (Saprolegniaceae) using 18S rDNA and morphological data. Mycol Res 106:549–560
Stassen JHM, Siedl MF, Vergeer PWJ, Nijman IJ, Snel B, Cuppen E, Van den Ackerveken G (2011) Effector identification in the downy mildew Bremia lactucae by massively parallel transcriptome sequencing. Mol Plant Pathol 13:719–731
Stidd BM, Consentino K (1975) Albugo-like oogonia from the American carboniferous. Science 190:1092–1093
Strittmatter M, Gachon CMM, Kupper F (2009) Ecology of lower oomycetes. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley-Blackwell, Ann Arbor, pp 25–46
Strullu-Derrien C, Kenrick P, Rioult JP, Strullu DG (2010) Evidence of parasitic oomycetes (Peronosporomycetes) infecting the stem cortex oft eh Carboniferous seed fern Lygniopteris odlhamia. Proc R Soc B. doi:10.1098/rspb.2010.1603
Taylor TN, Krings M, Keri H (2006) Hassiella monspora gen. et sp. nov., a microfungus from the 400 million year old Rhynie chert. Mycol Res 110:628–632
Telle S, Thines M (2012) Reclassification of an enigmatic downy mildew species on lovegrass (Eragrostis) to the new genus Eraphthora, with a key to the genera of the Peronosporaceae. Mycol Prog 11:121–129
Telle S, Shivas RG, Ryley MJ, Thines M (2011) Molecular phylogenetic analysis of Peronosclerospora (Oomycetes) reveals cryptic species and genetically distinct species parasitic to maize. Eur J Plant Pathol 130:521–528
Tewari JP, Skoropad WP (1977) Ultrastructure of oospore development in Albugo candida on rape seed. Can J Bot 55:2348–2357
Thaxter (1896) New and peculiar aquatic fungi. 4. Rhipidium, Sapromyces and Araiospora, nov. gen. Bot Gaz 21:317–330
Thines M (2009) Bridging the gulf: Phytophthora and downy mildews are connected by rare grass parasites. PLoS One 4:e4790
Thines M (2011) Recent outbreaks of downy mildew on grape ivy (Parthenocissus tricuspidata Vitaceae) in Germany are caused by a new species of Plasmopara. Mycol Prog 10:415–422
Thines M, Kamoun S (2010) Oomycete-plant coevolution: recent advances and future prospects. Curr Opin Biol 13:427–433
Thines M, Spring O (2005) A revision of Albugo (Chromista, Peronosporomycetes). Mycotaxon 92:443–458
Thines M, Voglmayr H (2009) An introduction to the white blister rusts (Albuginales). In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley, New York, pp 77–92
Thines M, Göker M, Oberwinkler F (2006) A revision of Bremia graminicola. Mycol Res 110:646–656
Thines M, Göker M, Oberwinkler F, Spring O (2007) A revision of Plasmopara penniseti, with implications for the host range of the downy mildews with pyriform haustoria. Mycol Res 111:1377–1385
Thines M, Göker M, Telle S, Ryley M, Mathur K, Narayana YD, Spring O, Thakur RP (2008) Phylogenetic relationships in graminicolous downy mildews based on cox2 sequence data. Mycol Res 112:345–351
Thines M, Choi Y-J, Kemen E, Ploch S, Holub EB, Shin H-D, Jones JDG (2009a) A new species of Albugo parasitic to Arabidopsis thaliana reveals new evolutionary patterns in white blister rusts (Albuginaceae). Persoonia 22:123–128
Thines M, Telle S, Ploch S, Runge F (2009b) Identity of the downy mildew pathogens of basil, coleus, and sage with implications for quarantine measures. Mycol Res 113:532–540
Thines M, Voglmayr H, Göker M (2009c) Taxonomy and phylogeny of the downy mildews. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley, New York, pp 47–75
Tian M, Win J, Savory R, Burkhart A, Held M, Brandizzi F, Day F (2011) 454 Genome sequencing of Pseudoperonospora cubensis reveals effector proteins with a QXLR translocation motive. Mol Plant Microbe Interact 24:543–553
Tokunaga Y (1934) Notes on the Lagendiaceae in Japan. Trans Sapporo Nat Hist Soc 13:227–232
Tong SM (1995) Developayella elegans nov. gen., nov. spec., a new type of heterotrophic flagellate from marine plankton. Eur J Protistol 31:24–31
Tooley PW, Therrien CD (1987) Cytophotometric determination of the nuclear DNA content of 23 Mexican and 18 non-Mexican isolates of Phytophthora infestans. Exp Mycol 11:19–26
Torto-Alalibo T, Tian M, Gajendran K, Waugh ME, Van West P, Kamoun S (2005) Expressed sequence tags from the oomycete fish pathogen Saprolegnia parasitica reveal putative virulence factors. BMC Microbiol 5:46. doi:10.1186/1471-2180-5-46
Tsui CKM, Marshall W, Yokoyama R, Honda D, Lippmeier JC, Craven KD, Berbee ML (2009) Labyrinthulomycetes phylogeny and its implications for the evolutionary loss of chloroplasts and gain of ectoplasmic gliding. Mol Phylogenet Evol 50:129–140
Tyler BM, Tripathy S, Zhang X, Dehal P, Jiang RH, Aerts A, Arredondo FD, Baxter L, Bensasson D, Beynon JL, Chapman J, Damasceno CM, Dorrance AE, Dou D, Dickerman AW, Dubchak IL, Garbelotto M, Gijzen M, Gordon SG, Govers F, Grunwald NJ, Huang W, Ivors KL, Jones RW, Kamoun S, Krampis K, Lamour KH, Lee MK, McDonald WH, Medina M, Meijer HJ, Nordberg EK, Maclean DJ, Ospina-Giraldo MD, Morris PF, Phuntumart V, Putnam NH, Rash S, Rose JK, Sakihama Y, Salamov AA, Savidor A, Scheuring CF, Smith BM, Sobral BW, Terry A, Torto-Alalibo TA, Win J, Xu Z, Zhang H, Grigoriev IV, Rokhsar DS, Boore JL (2006) Phytophthora genome sequences uncover the evolutionary origins and mechanisms of pathogenesis. Science 313:1261–1266
Uzuhashi S, Tojo M, Kakishima M (2010) Phylogeny of the genus Pythium and description of new genera. Mycoscience 51:337–365
Van der Auwera G, Da Baere R, Van der Peer Y, Rijk PD, Van den Broeck I, De Wachter R (1995) The phylogeny of the Hyphochytriomycota as deduced from ribosomal RNA sequences of Hyphochytrium catenoides. Mol Biol Evol 12:671–678
Van der Plaats-Niterink AJ (1981) Monograph of the genus Pythium. Centraalbureau voor Schimmelcultures, Baarn
Van West P (2006) Saprolegnia parasitica, an oomycete pathogen with a fishy appetite; new challenges for an old problem. Mycologist 20:99–104
Vanterpool TC (1959) Oospore germination in Albugo candida. Can J Bot 37:169–172
Vanterpool TC, Ledingham GA (1930) Studies on browning root rot of cereals. Can J Res 2:171–194
Villa NO, Kageyama K, Asano T, Suga H (2006) Phylogenetic relationships of Pythium and Phytophthora species based on ITS, rDNA, cytochrome oxidase II and β-tubulin gene sequences. Mycologia 98:410–422
Vlk W (1939) Über die Geisselstruktur der Saprolegniaceenschwärmer. Arch Protistenkd 92:157–160
Vogel HJ (1964) Distribution of lysine pathaways among fungi: evolutionary implications. Am Nat 98:435–446
Voglmayer H, Riethmüller A (2006) Phylogenetic relationships of Albugo species (white blister rusts) based on LSU rDNA sequence and oospore data. Mycol Res 110:75–85
Voglmayr H (2003) Phylogenetic study of Peronospora and related genera based on nuclear ribosomal ITS sequences. Mycol Res 107:1132–1142
Voglmayr H (2008) Progress and challenges in systematics of downy mildews and white blister rusts: new insights from genes and morphology. Eur J Plant Pathol 122:3–18
Voglmayr H, Constantinescu O (2008) Revision and reclassification of three Plasmopara species based on morphological and molecular phylogenetic data. Mycol Res 112:487–501
Voglmayr H, Thines M (2007) Phylogenetic relationships and nomenclature of Bremiella sphaerosperma (Chromista, Peronosporales). Mycotaxon 100:11–20
Voglmayr H, Bonner L, Dick MW (1999) Taxonomy and oogonial ultrastructure of a new aero-aquatic peronosporomycete, Medusoides gen nov. (Pythiogetonaceae fam nov). Mycol Res 103:591–606
Voglmayr H, Riethmüller A, Göker M, Weiss M, Oberwinkler F (2004) Phylogenetic relationships of Plasmopara, Bremia and other genera of downy mildews with pyriform haustoria based on Bayesian analysis of partial LSU rDNA sequence data. Mycol Res 108:1011–1024
Watanabe T (1987) Plectospira myriandra, a rediscovered water mold in Japanese soil. Mycologia 79:77–81
Waterhouse GM (1970) The genus Phytophthora de Bary: Diagnoses (or descriptions) and figures from the original papers, 2nd edn. Mycological Papers 122:1–59
Waterhouse GM (1973) Peronosporales. In: Ainsworth GC, Sparrow FK, Sussman AS (eds) The fungi, vol IVb. Academic, New York, pp 165–183
Wavra S, Bain J, Durward E, Bruijn ID, Minor KL et al (2012) Host-targeting protein 1 (SpHtp1) from the oomycete Saprolegnia parasitica translocates specifically into fish cells in a tyrosine-O- sulphate-dependent manner. Proc Natl Acad Sci USA 109:2096–2101
Webster J (1970) Introduction to fungi. Cambridge University Press, Cambridge
Weston WH, Uppal BN (1932) The basis of Sclerospora sorghi as a species. Phytopathology 22:573–586
Whisson SC, Avrova A, Grenville-Briggs L, van West P (2009) Mechanisms and applications of gene silencing in oomycetes. In: Lamour K, Kamoun S (eds) Oomycete genetics and genomics: diversity, interactions and research tools. Wiley, New York, pp 493–515
Willoughby LG (1962) The occurrence of reproductive spores of Saprolegniaceae in freshwater. J Ecol 50:733–759
Willoughby LG, Roberts RJ (1991) Occurrence of the sewage fungus Leptomitus lacteus, a necrotroph on perch (Perca fluviatilis), in Windermere. Mycol Res 95:755–768
Worden AZ, Not F (2008) Ecology and diversity of piceukaryotes. In: Kirchman DL (ed) Microbial ecology of the oceans, 2nd edn. Wiley, New York, pp 159–205
Wynn AR, Epton HAS (1979) Parasitism of oospores of the Phytophthora erythroseptica in soil. Trans Br Mycol Soc 73:255–259
Yokoyama R, Honda D (2007) Taxonomic rearrangement of the genus Schizochytrium sensu lato based on morphology, chemotaxonomical characteristics, and 18S rRNA gene phylogeny (Thraustochytriaceae, Labyrinthulomycetes): emendation for Schizochytrium and erection of Aurantiochytrium and Oblongichytrium gen nov. Mycoscience 48:199–211
Yokoyama R, Salleh B, Honda D (2007) Taxonomic rearrangement of the genus Ulkenia sensu lato based on morphology, chemotaxonomical characteristics, and 18S rRNA gene phylogeny (Thraustochytriaceae, Labyrinthulomycetes): emendation for Ulkenia and erection of Botrychytrium, Parietichytrium, and Sicyoidochytrium gen. nov. Mycoscience 48:329–341
Yubuki N, Leander BS, Silberan JD (2010) Ultrastructure and molecular phylogenetic position of a novel phagotrophic position of a novel phagotrophic stramenopile from low oxygen environments: Rictus lutensis gen. et sp. nov. (Biocosoecida, incertae sedis). Protist 161:264–278
Acknowledgements
We would like to thank our many colleagues who have shared unpublished trees and other information, including Arthur de Cock, Mike Coffey, Frithjoff Küpper, Claire Gachon, Sally Glockling, Mike and Deborah Hudspeth, Shigeki Inaba, Tim James, Riays Jiang, Andre Lévesque, Satoshi Sekimoto, and Chris Spies, whose helpful comments and unpublished phylogenetic trees are greatly appreciated. Most of the illustrative material was adapted from the excellent line drawings of Johnson et al. (2002), John Webster and the late John Karling. MT is supported by the LOEWE program of the state of Hessen.
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Beakes, G.W., Honda, D., Thines, M. (2014). 3 Systematics of the Straminipila: Labyrinthulomycota, Hyphochytriomycota, and Oomycota. In: McLaughlin, D., Spatafora, J. (eds) Systematics and Evolution. The Mycota, vol 7A. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55318-9_3
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