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Population genetic differentiation of Schisandra chinensis and Schisandra sphenanthera as revealed by ISSR analysis

作者 Sun, Ye; Wen, Xiangying; Huang, Hongwen

期刊 BIOCHEMICAL SYSTEMATICS AND ECOLOGY , MAY 2017,5:20

DOI 10.22038/IJBMS.2017.8690 PubMed 28656092

摘要 Schisandra chinensis (Turcz.) Baill. and Schisandra sphenanthera Rehd. et Wils. are well-known Chinese medicinal plants. The population genetic variation of the two species was studied using inter simple sequence repeat (ISSR) molecular markers. High levels of genetic diversity are revealed in both S. chinensis (P = 88.36%, h = 0.2894, I = 0.4396) and S. sphenanthera (P = 84.09%, H = 0.2782. I = 0.4280). However, the population genetic differentiation is significantly different between the two species. The S. sphenanthera harbors as high as 27% of the genetic variation among populations but 73% within populations, whereas in S. chinensis 1% of the genetic variation occurs among populations and 83% within populations. Both significant (P < 0.05) heterozygosity excess and shifted mode of allele frequency distribution are detected in four out of six populations of S. chinensis and one out of five populations of S. sphenanthera, suggesting the occurrence of recent population bottlenecks in the two species. The different patterns of genetic variation in S. chinensis and S. sphenanthera are discussed in relation to their differences in pollination mechanism, geographic distribution and historical events, and the level of gene flow and genetic drift. (C) 2010 Elsevier Ltd. All rights reserved.

涉及物种 华中五味子 Schisandra sphenanthera 五味子 Schisandra chinensis