Historical introgression among the species of Rodgersia (Saxifragaceae) in mountainous forests of southwest China
Ma, Xiang-Guang; Sun, Wen-Guang; Sun, Hang
2018-08-01
发表期刊MOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN1055-7903
卷号125期号:1页码:93-99
摘要

In the present study, we used genetic data and ecological niche modelling to explore possible historical introgressions among the species of Rodgersia (Saxifragaceae) in central-southwest China. Markedly differentiated chloroplast haplotypes were found in R. aesculifolia, R. sambucifolia and the Lijiang (LJ) population of R. pinnata, respectively, and differentiated chloroplast haplotypes within each of them showed the closest relationships with haplotypes from different species. ITS cloning did not reveal any shared ribotype between R. aesculifolia and the remaining species. Historical introgression between R. aesculifolia and R. sambucifolia (or R. pinnata) seems to be the most plausible explanation according to the geographical pattern and derivative status of putative introgressed chloroplast haplotypes, and also from morphological evidence. Introgressions were also found among R. sambucifolia, R. pinnata, and R. henricii from Yunnan. Frequent gene exchanges may have promoted the diversity of leaf shapes in this genus. Ecological niche modelling indicated that past secondary contact following range shifts during Pleistocene cold periods may have provided opportunities for ancient introgression between R. aesculifolia and adjacent species.

关键词Southwest China Ancient Introgression Secondary Contact Cyto-nuclear Discordance
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61335
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
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Ma, Xiang-Guang,Sun, Wen-Guang,Sun, Hang. Historical introgression among the species of Rodgersia (Saxifragaceae) in mountainous forests of southwest China[J]. MOLECULAR PHYLOGENETICS AND EVOLUTION,2018,125(1):93-99.
APA Ma, Xiang-Guang,Sun, Wen-Guang,&Sun, Hang.(2018).Historical introgression among the species of Rodgersia (Saxifragaceae) in mountainous forests of southwest China.MOLECULAR PHYLOGENETICS AND EVOLUTION,125(1),93-99.
MLA Ma, Xiang-Guang,et al."Historical introgression among the species of Rodgersia (Saxifragaceae) in mountainous forests of southwest China".MOLECULAR PHYLOGENETICS AND EVOLUTION 125.1(2018):93-99.
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