文献类型：期刊文献

英文题名：Genetic diversity and structure among natural populations of Mytilaria laosensis (Hamamelidaceae) revealed by microsatellite markers

作者：Yu, Niu[1] Yuan, Jie[2] Yin, Guangtian[1] Yang, Jinchang[1] Li, Rongsheng[1] Zou, Wentao[1]

第一作者：余纽

通信作者：Yang, JC[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Key Lab State Forestry Adm Trop Forestry Res, Guangzhou 510520, Guangdong, Peoples R China;[2]Forestry Invest & Design Team, Loudi 417000, Peoples R China

年份：2018

卷号：67

期号：1

起止页码：93-98

外文期刊名：SILVAE GENETICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000457341900002)】；

基金：This work was supported by the Fundamental Research Funds of Chinese Academy of Forestry under Grant [number CAFYBB2016SZ002 and CAFYBB2018QB003], Forestry Scientific and Technological Innovation Funds of Guangdong Province (2016KJCX004), and National Natural Science Foundation of China under Grant [number 31600538].

语种：英文

外文关键词：Mytilaria laosensis; SSR; Genetic diversity; Population structure

摘要：Mytilaria laosensis is a fast-growing tropical broadleaf tree that is extensively used for wood production and has significant ecological benefits. To investigate the genetic diversity and population structure of M. laosensis, eight major natural populations in China were analyzed by using simple sequence repeat (SSR) markers. A total of 88 microsatellite-containing fragments were obtained by the method of magnetic bead enrichment, among which 26 pairs of SSR primers were screened out and used to generate a total of 190 alleles among 152 individuals. The average of observed number of alleles, Shannon's information index and polymorphism information content per locus were 18.3, 1.1577 and 0.7759, respectively, implying a high level of genetic diversity in M. laosensis populations.The variation within populations accounted for 81.74 % of total variation based on analysis of molecular variance. Cluster analysis divided the eight populations into four groups, among which five populations from the southern parts of Guangxi province were classified as one major group. Mantel test showed that there was highly significant correlation between Euclidean genetic distance and geographic distance, suggesting that geographic isolation contribute to the high genetic diversity of M. laosensis. Together, these could provide support for the feasibility of exploration and utilization of M. laosensis in subtropical areas of East Asia including Jiangxi, Hunan and Fujian province of China.