Genetic diversity and population structure of the endangered species Paeonia decomposita endemic to China and implications for its conservation.
Genetic diversity and population structure of the endangered species Paeonia decomposita endemic to China and implications for its conservation.
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中国特有濒危物种芍药遗传多样性、种群结构及其保护意义
DOI：
10.1186/s12870-020-02682-z
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发表时间：
2020-11-09
影响因子：
5.3
通讯作者：
Wang SQ
中科院分区：
文献类型：
--
作者：
Wang SQ
研究背景分解紫菀是我国特有的珍稀濒危植物，具有重要的观赏、药用和经济价值。遗传多样性和种群结构很少被描述。一个保护管理计划是不是目前available.ResultsIn本研究中，16对简单重复序列（SSR）引物被用来评估遗传多样性和人口结构。共检测到122个等位基因，平均每个位点7.625个等位基因。16个引物的期望杂合度（He）在0.043 ~ 0.901之间，平均为0.492。居群间遗传多样性中等（He = 0.405），丹巴居群为遗传多样性中心。Mantel检验显示种群间地理距离和遗传距离呈正相关（r = 0.592，P = 0.0001），与距离隔离模型一致。分子方差分析表明，主要的分子变异存在于居群内（73.48%），而居群间（26.52%）的分子变异较少。Bayesian结构分析和主坐标分析（PCoA）支持将种群划分为3类。利用SSR进行分解。作为保护措施，提出了三个管理单位。研究结果将有助于该物种的保护和开发利用，为进一步研究其进化和分布地理学提供理论依据。
BackgroundPaeonia decomposita, endemic to China, has important ornamental, medicinal, and economic value and is regarded as an endangered plant. The genetic diversity and population structure have seldom been described. A conservation management plan is not currently available.ResultsIn the present study, 16 pairs of simple sequence repeat (SSR) primers were used to evaluate the genetic diversity and population structure. A total of 122 alleles were obtained with a mean of 7.625 alleles per locus. The expected heterozygosity (He) varied from 0.043 to 0.901 (mean 0.492) in 16 primers. Moderate genetic diversity (He = 0.405) among populations was revealed, with Danba identified as the center of genetic diversity. Mantel tests revealed a positive correlation between geographic and genetic distance among populations (r = 0.592,P = 0.0001), demonstrating consistency with the isolation by distance model. Analysis of molecular variance (AMOVA) indicated that the principal molecular variance existed within populations (73.48%) rather than among populations (26.52%). Bayesian structure analysis and principal coordinate analysis (PCoA) supported the classification of the populations into three clusters.ConclusionsThis is the first study of the genetic diversity and population structure ofP. decompositausing SSR. Three management units were proposed as conservation measures. The results will be beneficial for the conservation and exploitation of the species, providing a theoretical basis for further research of its evolution and phylogeography.
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影响因子：
4.4
作者：
Gao Z;Wu J;Liu Z;Wang L;Ren H;Shu Q
通讯作者：
Shu Q
影响因子：
2.2
作者：
Hamrick, J. L.;Godt, Mary Jo W.;Sherman-Broyles, Susan L.
通讯作者：
Sherman-Broyles, Susan L.
影响因子：
5.9
作者：
Aboukhalid, Kaoutar;Machon, Nathalie;Al Faiz, Chaouki
通讯作者：
Al Faiz, Chaouki
影响因子：
3
作者：
Homolka, Andreas;Berenyi, Maria;Fluch, Silvia
通讯作者：
Fluch, Silvia
影响因子：
1.1
作者：
Earl, Dent A.;vonHoldt, Bridgett M.
通讯作者：
vonHoldt, Bridgett M.