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研究植物系统发育和功能性状有助于认识植物的适应性进化机制。莎草科薹草属(Carex:Cyperaceae)植物种类繁多,生境类型多样,是研究不同生境下植物适应性进化的理想类群。本研究以鄱阳湖湖区周边区域29种薹草(湿生11种,陆生18种)为研究对象,基于分子系统发育和叶片功能性状初步探讨薹草属植物对生境的适应性进化。叶绿体DNA片段系统发育分析表明湿生薹草和陆生薹草各为不同的分支,表明不同生境的薹草种类具有不同的进化方向;12种叶片功能性状聚类分析表明在不同生境中薹草叶片功能性状及结构差异明显;通过比较发现薹草系统发育分析与叶片功能性状聚类结果在生境因素上存在对应关系,表明薹草属植物对不同的生境产生了适应性进化。
Abstract:The study of phylogeny and functional traits contributes to understanding the mechanism of adaptive evolution.The Carex,genus of Cyperaceae,has a variety of species with various habitats.Therefore,it is an ideal taxon for studying the adaptive evolution of plants in different habitats.This study took 29 species of Carex(11 species of wetland and 18 species of terrestrial) in the surrounding area of Poyang Lake as research objects.Based on the molecular phylogeny and leaf functional traits,the adaptive evolution of Carex to habitat was preliminarily studied.The phylogenetic analysis of chloroplast DNA fragments indicated that the wet and terrestrial grasses were basically divided into two branches,showing that the species of Carex in different habitats had different evolutionary directions;Cluster analysis of 12 kinds of leaf functional traits showed that there were significant differences in the functional traits and structures of the leaves in different habitats.By comparison,it was found that the relationship between the phylogenetic analysis and the leaf functional traits were related to the habitat factors,indicating that the species of Carex evolved adaptively to different habitats.
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基本信息:
DOI:10.13417/j.gab.037.003525
中图分类号:Q948
引用信息:
[1]侯曼曼,陈微,蔡奇英,等.基于系统发育和功能性状的薹草属适应性进化[J].基因组学与应用生物学,2018,37(08):3525-3533.DOI:10.13417/j.gab.037.003525.
基金信息:
国家自然科学基金(31260110)资助
2017-08-23
2017-08-23
2017-08-23