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
Source PublicationMOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN1055-7903
Volume125Issue:1Pages:93-99
Abstract

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.

KeywordSouthwest China Ancient Introgression Secondary Contact Cyto-nuclear Discordance
DOI10.1016/j.ympev.2018.03.002
Language英语
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/61335
Collection中国科学院东亚植物多样性与生物地理学重点实验室
AffiliationChinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
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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