Abstract
A novel actinobacterium, designated HIr16-25T, was isolated from the rhizosphere soil of a mangrove growing on Iriomote Island in Japan. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain HIr16-25T fell within the cluster of the members of the genus Agromyces and the highest sequence similarity value was observed with Agromyces rhizospherae IFO 16236T (98.6%). Strain HIr16-25T possessed l-2,4-diaminobutyric acid as a diagnostic diamino acid of the peptidoglycan, and MK-12 and MK-11 as the predominant menaquinones. The major fatty acids were identified as iso-C16:0, anteiso-C15:0 and anteiso-C17:0 and the principal polar lipids were phosphatidylglycerol and one glycolipid. These chemotaxonomic features matched well those described for the members of the genus Agromyces. Meanwhile, the result of DNA–DNA hybridization and the presence of differential phenotypic characteristics between strain HIr16-25T and the type strain of A. rhizospherae indicated that strain HIr16-25T be classified as a novel species of the genus Agromyces. Therefore, we propose strain HIr16-25T to represent a novel species of the genus Agromyces, with the name Agromyces mangrovi sp. nov. The type strain is HIr16-25T (= NBRC 112812T = TBRC 7760T).
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References
Akimov VN, Evtushenko LI (2012) Genus IV. Agromyces. In: Goodfellow M, Kämpfer P, Busse HJ, Trujillo ME, Suzuki K, Ludwig W, Whitman WB (eds) Bergey’s manual of systematic bacteriology, vol 5, 2nd edn. Springer, New York, pp 862–876
Corretto E, Antonielli L, Sessitsch A, Compant S, Gorfer M, Kuffner M, Brader G (2016) Agromyces aureus sp. nov., isolated from the rhizosphere of Salix caprea L. grown in a heavy-metal-contaminated soil. Int J Syst Evol Microbiol 66:3749–3754
Dittmer JC, Lester RL (1964) A simple, specific spray for the detection of phospholipids on thin-layer chromatograms. J Lipid Res 5:126–127
Ezaki T, Hashimoto Y, Yabuuchi E (1989) Fluorometric deoxyribonucleic acid-deoxyribonucleic acid hybridization in microdilution wells as an alternative to membrane filter hybridization in which radioisotopes are used to determine genetic relatedness among bacterial strains. Int J Syst Bacteriol 39:224–229
Felsenstein J (1981) Evolutionary trees from DNA sequences: a maximum likelihood approach. J Mol Evol 17:368–376
Felsenstein J (1985) Confidence limits on phylogenies: an approach using the bootstrap. Evolution 39:738–791
Fitch WM (1971) Toward defining the course of evolution: minimum change for a specific tree topology. Syst Zool 20:406–416
Gledhill WE, Casida LE (1969) Predominant catalase-negative soil bacteria. III. Agromyces, gen. n., microorganisms intermediary to Actinomyces and Nocardia. Appl Microbiol 18:340–349
Hamada M, Yamamura H, Komukai C, Tamura T, Suzuki K, Hayakawa M (2012) Luteimicrobium album sp. nov., a novel actinobacterium isolated from lichen collected in Japan, and emended description of the genus Luteimicrobium. J Antibiot 65:427–431
Hamada M, Shibata C, Tamura T, Nurkanto A, Ratnakomala S, Lisdiyanti P, Suzuki K (2016) Cellulosimicrobium marinum sp. nov., an actinobacterium isolated from sea sediment. Arch Microbiol 198:439–444
Jung SY, Lee SY, Oh TK, Yoon JH (2007) Agromyces allii sp. nov., isolated from the rhizosphere of Allium victorialis var. platyphyllum. Int J Syst Evol Microbiol 57:588–593
Minnikin DEM, Collins D, Goodfellow M (1975) Fatty acid and polar lipid composition in the classification of Cellulomonas, Oerskovia related taxa. J Appl Bacteriol 47:87–95
Roselló-Móra R, Trujillo ME, Sutcliffe IC (2017) Introducing a digital protologue: a timely move towards a database-driven systematics of archaea and bacteria. Syst Appl Microbiol 110:455–456
Saito H, Miura K (1963) Preparation of transforming deoxyribonucleic acid by phenol treatment. Biochim Biophys Acta 72:619–629
Saitou N, Nei M (1987) The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol Biol Evol 4:406–425
Sasser M (1990) Identification of bacteria by gas chromatography of cellular fatty acids, MIDI Technical Note 101. MIDI Inc, Newark
Schleifer KH, Kandler O (1972) Peptidoglycan types of bacterial cell walls and their taxonomic implications. Bacteriol Rev 36:407–477
Takeuchi M, Hatano K (2001) Agromyces luteolus sp. nov., Agromyces rhizospherae sp. nov. and Agromyces bracchium sp. nov., from the mangrove rhizosphere. Int J Syst Evol Microbiol 51:1529–1537
Tamaoka J, Komagata K (1984) Determination of DNA base composition by reversed-phase high-performance liquid chromatography. FEMS Microbiol Lett 25:125–128
Tamura K, Stecher G, Peterson D, Filipski A, Kumar S (2013) MEGA6: molecular evolutionary genetics analysis version 6.0. Mol Biol Evol 30:2725–2729
Thompson JD, Gibson TJ, Plewniak F, Jeanmougin F, Higgins DG (1997) The CLUSTAL_X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools. Nucleic Acids Res 25:4876–4882
Wayne LG, Brenner DJ, Colwell RR, Grimont PAD, Kandler O, Krichevsky MI, Moore LH, Moore WEC, Murray RGE, Stackebrandt E, Starr MP, Truper HG (1987) Report of the ad hoc committee on reconciliation of approaches to bacterial systematics. Int J Syst Bacteriol 37:463–464
Yoon SH, Ha SM, Kwon S, Lim J, Kim Y, Seo H, Chun J (2017) Introducing EzBioCloud: a taxonomically united database of 16S rRNA and whole genome assemblies. Int J Syst Evol Microbiol 67:1613–1617
Zgurskaya HI, Evtushenko LI, Akimov VN, Voyevoda HV, Dobrovol TG, Lysak LV, Kalakoutskii LV (1992) Emended description of the genus Agromyces and description of Agromyces cerinus subsp. cerinus sp. nov., subsp. nov., Agromyces cerinus subsp. nitratus sp. nov., subsp. nov., Agromyces fucosus subsp. fucosus sp. nov., subsp. nov., and Agromyces fucosus subsp. hippuratus sp. nov., subsp. nov Int J Syst Evol Microbiol 42:635–641
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The authors thank Dr Satoshi Sekimoto and Ms Mayuko Sukisaki (NBRC) for supporting sample collection.
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Communicated by Erko Stackebrandt.
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Hamada, M., Saitou, S. & Tamura, T. Agromyces mangrovi sp. nov., a novel actinobacterium isolated from the rhizosphere of a mangrove. Arch Microbiol 200, 939–943 (2018). https://doi.org/10.1007/s00203-018-1504-4
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DOI: https://doi.org/10.1007/s00203-018-1504-4
Keywords
- Actinobacteria
- Mangrove rhizosphere
- Agromyces
- Polyphasic taxonomy