首页|Genetic diversity analysis of Sinojackia microcarpa, a rare tree species endemic in China, based on simple sequence repeat markers

Genetic diversity analysis of Sinojackia microcarpa, a rare tree species endemic in China, based on simple sequence repeat markers

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Although most Sinojackia species are endan-gered, they contribute greatly to the biodiversity of local ecosystems. Sinojackia microcarpa, an endangered species, is distributed only in three provinces of eastern China. Determining the genetic diversity of S. microcarpa pro-vides key information for germplasm evaluation and spe-cies conservation. Here we used simple sequence repeat (SSR) markers to investigate the genetic diversity of eight natural populations of S. microcarpa. Leaf samples were collected from 144 individuals in 8 wild populations. The 156 bands were generated from 14 pairs of informative SSR primers, with an average percentage of polymorphic bands of 45.67％. The average values of Nei's genetic diversity (He) and Shannon's diversity index (I) were 0.1007 and 0.1658, respectively. The total genetic variation of S. microcarpa existed mainly within the eight popula-tions, rather than among populations, and reached 86.41％. A cluster analysis showed that the eight wild populations of S. microcarpa could be classified into four groups, at a threshold of 4.0, based on an analysis of the SSR geno-types. Furthermore, there was a significant association between the phylogenetic relationships and the geographic locations of the S. microcarpa populations. In particular, populations from Fuyang, Jiande, and Lin'an in Zhejiang Province had close phylogenetic relationships and geo-graphic distances. In addition, these three populations had the highest genetic diversity and the most individuals, suggesting that these three locations may be the S.microcarpa distribution center. This study serves as a model for studying the genetic diversity of endangered plant species.

Genetic diversitySinojackia microcarpaSSR marker

Tailin Zhong、Guangwu Zhao、Yongfeng Lou、Xinchun Lin、Xiaomin Guo

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College of Landscape and Art, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China

Department of Landscape and Art, Jiyang College of Zhejiang Agriculture and Forestry University, Zhuji 311800, People's Republic of China

School of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Hangzhou 311300, People's Republic of China

Jiangxi Academy of Forestry, Nanchang 330032, People's Republic of China

State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, Zhejiang, People's Republic of China

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This study was supported by the Natural Science Foundation of Zhejiang Province, ChinaGraduate Special Fund Innovative Projects of Jiangxi ProvinceTalent start research projects of Jiyang college of Zhejiang Agriculture and Forestry UniversityUniversity Teachers' Professional Development Project of Zhejiang ProvinceUniversity Teachers' Professional Development Project of Zhejiang ProvinceUniversity Teachers' Professional Development Project of Zhejiang ProvinceExperiment Program of Forest Resources Monitoring Center of Zhejiang Province

LY13C160007YC2014-B035JY2018RC0XFX20150502014088

2019

林业研究(英文版)
东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDCSCDSCI
影响因子：0.365
ISSN：1007-662X
年,卷(期)：2019.30(3)
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