Comparative analyses of genetic/epigenetic diversities and structures in a wild barley species (Hordeum brevisubulatum) using MSAP, SSAP and AFLP
文献类型： 外文期刊
作者： Shan, X. H. 3 ; Li, Y. D. 2 ; Liu, X. M. 1 ; Wu, Y. 3 ; Zhang, M. Z. 3 ; Guo, W. L. 2 ; Liu, B. 1 ; Yuan, Y. P. 3 ;
作者机构： 1.NE Normal Univ, Inst Cytol & Genet, Key Lab Mol Epigenet MOE, Changchun, Peoples R China
2.Jilin Acad Agr Sci, Biotechnol Res Ctr, Changchun, Peoples R China
3.Jilin Univ, Coll Plant Sci, Changchun 130023, Peoples R China
关键词： Hordeum brevisubulatum;(Epi-)genetic diversity;(Epi-)genetic structure;Gene flow
期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）
ISSN： 1676-5680
年卷期： 2012 年 11 卷 3 期
页码：
收录情况： SCI
摘要： We analyzed genetic diversity and population genetic structure of four artificial populations of wild barley (Hordeum brevisubulatum); 96 plants collected from the Songnen Prairie in northeastern China were analyzed using amplified fragment length polymorphism (AFLP), specific-sequence amplified polymorphism (SSAP) and methylation-sensitive amplified polymorphism (MSAP) markers. Indices of (epi-)genetic diversity, (epi-)genetic distance, gene flow, genotype frequency, cluster analysis, PCA analysis and AMOVA analysis generated from MSAP, AFLP and SSAP markers had the same trend. We found a high level of correlation in the artificial populations between MSAP, SSAP and AFLP markers by the Mantel test (r > 0.8). This is incongruent with previous findings showing that there is virtually no correlation between DNA methylation polymorphism and classical genetic variation; the high level of genetic polymorphism could be a result of epigenetic regulation. We compared our results with data from natural populations. The population diversity of the artificial populations was lower. However, different from what was found using AFLP and SSAP, based on MSAP results the methylation polymorphism of the artificial populations was not significantly reduced. This leads us to suggest that the DNA methylation pattern change in H. brevisubulatum populations is not only related to DNA sequence variation, but is also regulated by other controlling systems.
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