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Genetic homogenization of the nuclear ITS loci across two morphologically distinct gentians in their overlapping distributions in the Qinghai-Tibet Plateau
Hu, Quanjun1; Peng, Huichao2; Bi, Hao1; Lu, Zhiqiang3; Wan, Dongshi3; Wang, Qian1,4; Mao, Kangshan1
2016-09-30
发表期刊SCIENTIFIC REPORTS
卷号6
文章类型Article
摘要Interspecific hybridization and introgression can lead to partial genetic homogenization at certain neutral loci between morphologically distinct species and may obscure the species delimitation using nuclear genes. In this study, we investigated this phenomenon through population genetic survey of two alpine plants (Gentiana siphonantha and G. straminea) in the Qinghai-Tibet Plateau, where the distributions of two species are partly overlapped. We identified two clusters of chloroplast DNA haplotypes which correspond to the two species, and three clusters of ITS ribotypes. In addition to clusters specific to each species, the third ITS cluster, which was most likely derived from hybridization between the other two clusters and subsequent recombination and concerted evolution, was widely shared by two species in their adjacent areas. In contrast to the morphological distinctiveness of the two species, interspecific gene flow possibly led to genetic homogenization at their ITS loci. The new ITS lineage recovered for species in adjacent areas is distinctly different from original lineages found in allopatric areas. These findings may have general implications for our understanding of cryptic changes at some genetic loci caused by interspecific gene flow in the history, and they indicate that species delimitation should be based on a combination of both nuclear and chloroplast DNA sequence variations.
WOS标题词Science & Technology
DOI10.1038/srep34244
关键词[WOS]INTERNAL TRANSCRIBED SPACER ; PHYLOGENETIC INFERENCE ; MOLECULAR PHYLOGENY ; CONCERTED EVOLUTION ; MITOCHONDRIAL-DNA ; RIBOSOMAL DNA ; ALPINE PLANTS ; INTROGRESSION ; FLOW ; DIVERSIFICATION
收录类别SCI
语种英语
项目资助者National Key Project for Basic Research(2014CB954100) ; National Natural Science Foundation of China(31590821 ; Sichuan Province Youth Science and Technology Innovation Team(2014TD003) ; Sichuan Provincial Department of Science and Technology(2015JQ0018) ; Sichuan University ; 31300176)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000384343800001
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/6434
专题中国科学院西北高原生物研究所
作者单位1.Sichuan Univ, Coll Life Sci, MOE Key Lab Bioresources & Ecoenvironm, Chengdu 6100065, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Evolut & Adaptat Plateau Biota, Xining 810001, Qinghai, Peoples R China
3.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Ecosyst, Lanzhou 730000, Peoples R China
4.Zunyi Med Univ, Res Ctr Med & Biol, Key Lab Oral Dis Res, Zunyi 563000, Peoples R China
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GB/T 7714
Hu, Quanjun,Peng, Huichao,Bi, Hao,et al. Genetic homogenization of the nuclear ITS loci across two morphologically distinct gentians in their overlapping distributions in the Qinghai-Tibet Plateau[J]. SCIENTIFIC REPORTS,2016,6.
APA Hu, Quanjun.,Peng, Huichao.,Bi, Hao.,Lu, Zhiqiang.,Wan, Dongshi.,...&Mao, Kangshan.(2016).Genetic homogenization of the nuclear ITS loci across two morphologically distinct gentians in their overlapping distributions in the Qinghai-Tibet Plateau.SCIENTIFIC REPORTS,6.
MLA Hu, Quanjun,et al."Genetic homogenization of the nuclear ITS loci across two morphologically distinct gentians in their overlapping distributions in the Qinghai-Tibet Plateau".SCIENTIFIC REPORTS 6(2016).
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