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题名: Diploid hybrid origin of Hippophae gyantsensis (Elaeagnaceae) in the western Qinghai-Tibet Plateau
作者: Jia, DR; Wang, YJ; Liu, TL; Wu, GL; Kou, YX; Cheng, K; Liu, JQ(刘建全)
收录类别: SCIE ; BIOSIS
出版日期: 2016-04
刊名: BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷号: 117, 期号:4, 页码:658-671
出版者: WILEY
出版地: HOBOKEN
英文摘要: Homoploid hybrid speciation, the origin of a hybrid species without change in chromosome number, is currently considered to be a rare form of speciation. In the present study, we examined the phylogenetic origin of Hippophae gyantsensis, a diploid species occurring in the western Qinghai-Tibet Plateau. Some of its morphological and molecular traits suggest a close relationship to H.rhamnoides ssp. yunnanensis while others indicate H.neurocarpa. We conducted phylogenetic analyses of sequence data of two maternally inherited chloroplast (cp) DNA fragments and the bi-parentally inherited nuclear ribosomal internal transcribed spacer (ITS) from 17 populations of H.gyantsensis, 15 populations of H.rhamnoides ssp. yunnanensis and 27 populations of H.neurocarpa across their distributional ranges, and modelled the niche differentiation of the three taxa. Multiple lines of evidence suggested that H.gyantsensis is a morphologically stable, genetically independent and ecologically distinct species. The inconsistent phylogenetic placements of the H.gyantsensis clade that comprised the dominant cpDNA haplotypes and ITS ribotypes suggested a probable diploid hybrid origin from multiple crosses between H.rhamnoides ssp. yunnanensis and H.neurocarpa. This tentative hypothesis is more parsimonious than alternative explanations according to the data available, although more evidence based on further testing is needed.
关键词: cpDNA ; H ; neurocarpa ; H ; rhamnoides ssp ; yunnanensis ; ITS
作者部门: [Jia, Dong-Rui ; Wang, Yu-Jin ; Liu, Teng-Liang ; Wu, Gui-Li ; Kou, Yi-Xuan ; Cheng, Kai ; Liu, Jian-Quan] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China ; [Jia, Dong-Rui] Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650091, Peoples R China
通讯作者: Liu, JQ (reprint author), Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China.
学科分类: Evolutionary Biology
文章类型: Article
所属项目编号: National Key Project for Basic Research [2014CB954100] ; National Natural Science Foundation of China [30725004, 31560112] ; Foreign Collaboration Program '111' ; Collaboration Program of the Ministry of Science and Technology of China [2010DFA34610]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 国家国际科技合作专项
项目资助者: NSFC ; MOST
语种: 英语
DOI: 10.1111/bij.12707
ISSN号: 0024-4066
WOS记录号: WOS:000371527800001
BIOSIS记录号: BCI:BCI201600264967
IR记录号: WOS:000371527800001
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/181982
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Jia, DR,Wang, YJ,Liu, TL,et al. Diploid hybrid origin of Hippophae gyantsensis (Elaeagnaceae) in the western Qinghai-Tibet Plateau[J]. BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,2016,117(4):658-671.
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