Genetic Diversity in Salix gordejevii Populations from Different Environmental Gradients in Horqin Sandy Land, Northern China

IF 0.4 4区 环境科学与生态学 Q4 ECOLOGY Polish Journal of Ecology Pub Date : 2019-12-09 DOI:10.3161/15052249PJE2019.67.3.001
Wenda Huang, Xueyong Zhao, Xin Zhao, Ya-yong Luo, Jing Feng, Na Su, Yuanzheng He
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引用次数: 1

Abstract

ABSTRACT Salix gordejevii (Salicaceae) is a climax and dominant sand-fixing shrub species native to the northern China. We assessed S. gordejevii population genetic variation in different environmental gradients in Horqin Sandy Land, Northern China using inter-simple sequence repeat (ISSR) markers, and investigated the possible existence of relationships between genetic diversity and environmental gradients. The results showed that S. gordejevii populations in general have high genetic diversity. An analysis of molecular variation (AMOVA) revealed relatively high levels (> 89.91%) of within-population genetic variation. Based on cluster analysis, the 12 studied S. gordejevii populations can be clustered into three clades. Genetic diversity and differentiation of S. gordejevii populations are affected from different environmental gradients. Genetic diversity of all populations was affected by habitat environment change, and was well-correlated with the humidity gradients. These results have important implications for restoration and management of degraded ecosystems in arid and semi-arid areas.
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科尔沁沙地不同环境梯度黄柳居群遗传多样性研究
黄柳(Salix godejevii)是中国北方原产的顶极固沙优势灌丛。利用ISSR (intersimple sequence repeat)技术,对科尔沁沙地不同环境梯度下的高氏沙鼠(S. gordejevii)居群遗传多样性进行了分析,并探讨了遗传多样性与环境梯度之间可能存在的关系。结果表明,大叶蝉居群总体具有较高的遗传多样性。分子变异分析(AMOVA)显示群体内遗传变异水平较高,达89.91%。聚类分析表明,12个种群可聚为3个支系。不同的环境梯度对大叶蝉居群的遗传多样性和分化有影响。所有种群的遗传多样性均受生境环境变化的影响,并与湿度梯度有良好的相关性。这些结果对干旱半干旱区退化生态系统的恢复和管理具有重要意义。
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来源期刊
Polish Journal of Ecology
Polish Journal of Ecology 环境科学-生态学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
18-36 weeks
期刊介绍: POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.
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