维管植物遗传多样性与气候因子的关系
谭景方;万基中;罗芳丽;于飞海
【期刊名称】《资源与生态学报（英文版）》 【年(卷),期】2024(009)006
【摘要】Genetic diversity is crucial for plants to respond to global climate change, and exploring relationships between genetic diversity and climatic factors may help predict how global climate change will shape the genetic diversity of plants in the future. So far, however, the extent and magnitude of the impact of climatic factors on the genetic diversity of plants has not been clarified. We collected data from 68 published papers on two widely used measures of genetic diversity of populations (average expected heterozygosity (He) and average observed heterozygosity (Ho)) and on localities of populations of 79 vascular plants, and extracted data on 19 climatic factors from WorldClim. We then explored the relationships between measures of genetic diversity and climatic factors using linear regressions. He of plant populations was significantly correlated with climatic factors in 58.7％ (44) of the 75 species that used He as a measure of genetic diversity, and Ho was correlated with climatic factors in 65.1％ (41) of the 63 species that used this genetic diversity measure. In general, Mean Temperature of Wettest Quarter, Precipitation Seasonality, Precipitation of Driest Quarter and Temperature Seasonality played a
vital role in shaping He, and Ho was mostly correlated with Precipitation of Warmest Quarter, Mean Temperature of Wettest Quarter, Precipitation of Driest Quarter and Precipitation of Driest Month. Also, the proportion of the significant correlations between genetic diversity of populations and climatic factors was higher for woody than for herbaceous species, and different climatic factors played different roles in shaping genetic diversity of these two growth forms. Our results suggest that climate may play an important role in shaping genetic diversity of plant populations, that climatic change in the future may alter genetic diversity of plants, and that genetic diversity of different plant forms may respond to climatic change differently.%遗传多样性对植物响应全球气候变化至关重要,研究遗传多样性和气候因子之间的关系有利于预测未来全球气候变化对植物遗传多样性的影响.然而,到目前为止,气候因子对植物遗传多样性影响的范围和程度目前并不清楚.从68篇已发表的文献中,我们收集了79种维管植物的两种常用的种群遗传多样性指标(平均期望杂合度和平均观测杂合度)及种群坐标数据,并从WorldClim提取了19种气候因子数据.然后,利用线性回归分析了遗传多样性与气候因子之间的关系.在用平均期望杂合度来度量遗传多样性的75种植物中,58.7％(44种)植物的种群平均期望杂合度与某种气候因子显著相关,而在用平均观测杂合度来度量遗传多样性的63种植物中,65.1％(41种)植物的平均观测杂合度与某种气候因子显著相关.其中,最湿季均温、降水季节性、最干季降水量和温度季节性对平均期望杂合度的影响最为广泛,而平均观测杂合度则与最暖季降水量、最湿季均温、最干季降水量和最干
月降水量的相关性最为广泛.木本植物种群遗传多样性与气候因子之间的显著相关比例高于草本植物,不同气候因子对这两种生长型植物遗传多样性的影响不同.这些研究结果表明,气候可能在植物种群遗传多样性的形成过程中起着重要的作用,未来气候变化可能改变植物的遗传多样性,以及不同类型植物的遗传多样性可能对气候变化有不同的响应. 【总页数】10页(663-672)
【关键词】平均期望杂合度;平均观测杂合度;气候变化;遗传变异;生长型;微卫星 【作者】谭景方;万基中;罗芳丽;于飞海
【作者单位】北京林业大学自然保护区学院,北京 100083;北京林业大学自然保护区学院,北京 100083;北京林业大学自然保护区学院,北京 100083;北京林业大学自然保护区学院,北京 100083;台州学院植物进化生态学与保护浙江省重点实验室,浙江台州 318000 【正文语种】中文 【中图分类】 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_journal-resources-ecology_thesis/0201270237182.html 【相关文献】
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维管植物遗传多样性与气候因子的关系
