Molecular evidence for asymmetric hybridization in three closely related sympatric species

doi:10.1093/aobpla/ply011

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 植物化学与西部植物资源持续利用国家重点实验室

	Molecular evidence for asymmetric hybridization in three closely related sympatric species
	Zhang, Ning-Ning 1,2,3; Yu, Jiao-Jun 2; Wang, Yue-Hua 1; Gong, Xun2
刊名	AOB PLANTS
	2018-02-01
卷号	10 期号:1 页码:ply011
关键词	Asymmetric Hybridization Chloroplast Dna F-1 Generation Ligularia Nuclear Loci Two Hybridization Groups
ISSN号	2041-2851
DOI	10.1093/aobpla/ply011
英文摘要	Natural hybridization is common in plants and results in different evolutionary consequences to hybridizing species. Pre- and post-zygotic reproductive isolating barriers can impede hybridization between closely related species to maintain their species integrity. In Northwest Yunnan, three Ligularia species (Ligularia cyathiceps, L. duciformis and L. yunnanensis) and four types of morphologically intermediate individuals were discovered growing together in an area subject to human disturbance. In this study, we used three low-copy nuclear loci to test the natural hybridization hypothesis and the hybridization direction was ascertained by three chloroplast DNA fragments. The results indicated there were two hybridization groups at the study site, L. cyathiceps x L. duciformis and L. duciformis x L. yunnanensis, and two types of morphologically intermediate individuals were produced by L. cyathiceps and L. duciformis, and another two types were produced by L. duciformis and L. yunnanensis, while no hybrids between L. cyathiceps and L. yunnanensis were observed. Both hybridizing groups showed bidirectional but asymmetric hybridization and the factors influencing the symmetry are discussed. Most hybrids produced by the two hybridization groups seemed to be F-1 generation. Hybrids with different morphologies within the same hybridization group showed similar genetic components. The results suggest that although human disturbance may promote natural hybridization among the three Ligularia species bringing them together, hybrids are limited to F(1)s and therefore species boundaries might be maintained.
语种	英语
WOS记录号	WOS:000427226900026
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/60441]
专题	昆明植物研究所_植物化学与西部植物资源持续利用国家重点实验室
作者单位	1.Yunnan Univ, Sch Life Sci, Plant Sci Inst, Kunming 650201, Yunnan, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ning-Ning,Yu, Jiao-Jun,Wang, Yue-Hua,et al. Molecular evidence for asymmetric hybridization in three closely related sympatric species[J]. AOB PLANTS,2018,10(1):ply011.
APA	Zhang, Ning-Ning,Yu, Jiao-Jun,Wang, Yue-Hua,&Gong, Xun.(2018).Molecular evidence for asymmetric hybridization in three closely related sympatric species.AOB PLANTS,10(1),ply011.
MLA	Zhang, Ning-Ning,et al."Molecular evidence for asymmetric hybridization in three closely related sympatric species".AOB PLANTS 10.1(2018):ply011.