Abstract
Chloroplast microsatellites (SSRs) are conserved within wheat species, yet are sufficiently polymorphic between and within species to be useful for evolutionary studies. This study describes the relationships among a very large set of accessions of Triticum urartu Thum. ex Gandil., T. dicoccoides (Körn. ex Asch. et Graebn.) Schweinf., T. dicoccon Schrank, T. durum Desf., T. spelta L., and T. aestivum L. s. str. based on their cpSSR genotypes. By characterising the chloroplast diversity in each wheat species in the evolutionary series, the impact on diversity of major evolutionary events such as domestication and polyploidyisation was assessed. We detected bottlenecks associated with domestication, polyploidisation and selection, yet these constrictions were partially offset by mutations in the chloroplast SSR loci that generated new alleles. The discrete cpSSR alleles and haplotypes observed in T. urartu and Aegilops tauschii, combined with other species specific polymorphisms, provide very strong evidence that concur with current opinion that neither species was the maternal and thus cytoplasmic donor for polyploid wheats. Synthetic hexaploid wheats possessed the same chloroplast haplotypes as their tetraploid progenitors demonstrating how the novel synthetic wheat lines have captured chloroplast diversity from the maternal parents, the chloroplast is maternally inherited and novel alleles are not created by genomic rearrangements triggered by the polyploidisation event.
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References
Allender CJ, Allainguillaume J, Lynn J, King GJ (2007) Simple sequence repeats reveal uneven distribution of genetic diversity in chloroplast genomes of Brassica oleracea L. and (n = 9) wild relatives. Theor Appl Genet 114:609–618
Buckler E, Thornsbury JM, Kresovich S (2001) Molecular diversity, structure and domestication of grasses. Genet Res 77:213–218
Ebert D, Peakall R (2009) Chloroplast simple sequence repeats (cpSSRs): technical resources and recommendations for expanding cpSSR discovery and applications to a wide array of plant species. Mol Ecol Resour 9:673–690
Fulton TM, Chungwongse J, Tanksley SD (1995) Microprep protocol for the extraction of DNA from tomato and other herbaceous plants. Plant Mol Biol Rep 13:207–209
Hammer K, Filatenko AA, Pistrick K (2011) Taxonomic remarks on Triticum L. and ×Triticosecale Wittm. Genet Resour Crop Evol 58:3–10
Haudry A, Cenci A, Ravel C, Bataillon T, Brunel D, Poncet C, Hochu I, Poirier S, Santoni S, Glémin S, David J (2007) Grinding up wheat: a massive loss of nucleotide diversity since domestication. Mol Biol Evol 24:1506–1517
Hirosawa S, Takumi S, Ishii T, Kawahara T, Nakamura C, Mori N (2004) Chloroplast and nuclear DNA variation in common wheat: insight into the origin and evolution of common wheat. Genes Genet Syst 79:271–282
Ishii T, Mori N, Ogihara Y (2001) Evaluation of allelic diversity at chloroplast SSR loci among common wheat and its ancestral species. Theor Appl Genet 103:896–904
Jones H, Lister DL, Bower MA, Leigh FJ, Smith LM, Jones MK (2008) Approaches and constraints of using existing landrace and extant plant material to understand agricultural spread in prehistory. Plant Genet Resour Charact Util 6:98–112
Leigh FJ, Oliveira HR, Mackay I, Jones H, Smith L, Wolters P, Charles M, Jones M, Powell W, Brown TA, Jones G (2012) Remnant genetic diversity detected in an ancient crop: Triticum dicoccon Schrank landraces from Asturias, Spain. Genet Resour Crop Evol. doi:10.1007/s10722-012-9840-8
Luo M-C, Yang Z-L, You FM, Kawahara T, Waines JG, Dvorak J (2007) The structure of wild and domesticated emmer wheat, populations, geneflow between them, and the site of emmer domestication. Theor Appl Genet 114:947–959
Matsuoka Y, Mitchell SE, Kresovich S, Goodman S, Doebley J (2002) SSRs in Zea—variability, patterns of mutations and use for evolutionary studies. Theor Appl Genet 104:436–450
Matsuoka Y, Mori N, Kawahara T (2005) Genealogical use of chloroplast DNA variation for intraspecific studies of Aegilops tauschii Coss. Theor Appl Genet 111:265–271
Ozkan H, Brandolini A, Pozzi C, Effgen S, Wunder J, Salamini F (2005) A reconsideration of the domestication geography of tetraploid wheats. Theor Appl Genet 110:1052–1060
Özkan H, Willcox G, Graner A, Salamini F, Kilian B (2010) Geographic distribution and domestication of wild emmer wheat (Triticum dicoccoides). Genet Resour Crop Evol 58:11–53
Perrier X, Jacquemoud-Collet JP (2006) DARwin software http://darwin.cirad.fr/darwin
Perrier X, Flori A, Bonnot F (2003) Data analysis methods. In: Hamon P, Seguin M, Perrier X, Glaszmann JC (eds) Genetic diversity of cultivated tropical plants. Enfield, Science Publishers, Montpellier, pp 43–76
Provan J, Russell JR, Booth A, Powell W (1999a) Polymorphic chloroplast simple sequence repeat primers for systematic and population studies in the genus Hordeum. Mol Ecol 8:505–512
Provan J, Powell W, Dewar H, Bryan G, Machray GC and Waugh R (1999b) An extreme cytoplasmic bottleneck in the modern European cultivated potato (Solanum tuberosum) is not reflected in decreased nuclear diversity. Proc R Soc Lond B Biol Sci 266:633–639
Provan J, Soranzo N, Wilson NJ, Goldstein DB, Powell W (1999c) A low mutation rate for chloroplast microsatellites. Genetics 153:943–947
Provan J, Wolters P, Caldwell KH, Powell W (2004) High-resolution organellar genome analysis of Triticum and Aegliops sheds new light on cytoplasm evolution in wheat. Theor Appl Genet 108:1182–1190
Schlumbaum A, Tensen M, Jaenicke-Després V (2008) Ancient plant DNA in archaeobotany. Veg Hist Archaeobot 17:233–244
Tanksley SD, McCouch SR (1997) Seed banks and molecular maps: unlocking genetic potential from the wild. Science 277:1063–1066
Vigouroux Y, Jaqueth JS, Matsuoka Y, Smith OS, Beavis WD, Smith JSC, Doebley J (2002) Rate and pattern of mutation at microsatellite loci n maize. Mol Biol Evol 19:1251–1260
Zohary D, Hopf M, Weiss E (2012) Domestication of plants in the Old World, 4th edn. Oxford University Press, Oxford
Acknowledgments
This work was funded by the Natural Environment Research Council as part of the consortium project ‘The Domestication of Europe’. We thank the project partners at the University of Cambridge and University of Sheffield for helpful advice.
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Leigh, F.J., Mackay, I., Oliveira, H.R. et al. Using diversity of the chloroplast genome to examine evolutionary history of wheat species. Genet Resour Crop Evol 60, 1831–1842 (2013). https://doi.org/10.1007/s10722-013-9957-4
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DOI: https://doi.org/10.1007/s10722-013-9957-4