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Genetic diversity, genetic structure and demographic history of Cycas simplicipinna(Cycadaceae) assessed by DNA sequences and SSR markers
Feng,Xiuyan1,2; Wang,Yuehua3; Gong,Xun1
2014-07-12
发表期刊BMC Plant Biology
ISSN1471-2229
卷号14期号:1
摘要AbstractBackgroundCycas simplicipinna (T. Smitinand) K. Hill. (Cycadaceae) is an endangered species in China. There were seven populations and 118 individuals that we could collect were genotyped in this study. Here, we assessed the genetic diversity, genetic structure and demographic history of this species.ResultsAnalyses of data of DNA sequences (two maternally inherited intergenic spacers of chloroplast, cpDNA and one biparentally inherited internal transcribed spacer region ITS4-ITS5, nrDNA) and sixteen microsatellite loci (SSR) were conducted in the species. Of the 118 samples, 86 individuals from the seven populations were used for DNA sequencing and 115 individuals from six populations were used for the microsatellite study. We found high genetic diversity at the species level, low genetic diversity within each of the seven populations and high genetic differentiation among the populations. There was a clear genetic structure within populations of C. simplicipinna. A demographic history inferred from DNA sequencing data indicates that C. simplicipinna experienced a recent population contraction without retreating to a common refugium during the last glacial period. The results derived from SSR data also showed that C. simplicipinna underwent past effective population contraction, likely during the Pleistocene.ConclusionsSome genetic features of C. simplicipinna such as having high genetic differentiation among the populations, a clear genetic structure and a recent population contraction could provide guidelines for protecting this endangered species from extinction. Furthermore, the genetic features with population dynamics of the species in our study would help provide insights and guidelines for protecting other endangered species effectively.
关键词Cycas simplicipinna Pleistocene Genetic differentiation Population contraction In situ Ex situ conservation
DOI10.1186/1471-2229-14-187
语种英语
WOS记录号BMC:10.1186/1471-2229-14-187
出版者BioMed Central
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61771
专题中国科学院昆明植物研究所
通讯作者Gong,Xun
作者单位1.Chinese Academy of Sciences; Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany
2.University of Chinese Academy of Sciences
3.Yunnan University; Plant Science Institute, School of Life Sciences
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Feng,Xiuyan,Wang,Yuehua,Gong,Xun. Genetic diversity, genetic structure and demographic history of Cycas simplicipinna(Cycadaceae) assessed by DNA sequences and SSR markers[J]. BMC Plant Biology,2014,14(1).
APA Feng,Xiuyan,Wang,Yuehua,&Gong,Xun.(2014).Genetic diversity, genetic structure and demographic history of Cycas simplicipinna(Cycadaceae) assessed by DNA sequences and SSR markers.BMC Plant Biology,14(1).
MLA Feng,Xiuyan,et al."Genetic diversity, genetic structure and demographic history of Cycas simplicipinna(Cycadaceae) assessed by DNA sequences and SSR markers".BMC Plant Biology 14.1(2014).
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