Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae)

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae)
	Yu, Jiao-Jun 1,2; Kuroda, Chiaki 3; Gong, Xun1
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION
	2011-09-01
卷号	49 期号:5 页码:438-448
关键词	chloroplast fragments ISSR markers Ligularia natural hybridization nuclear ribosomal ITS
ISSN号	1674-4918
通讯作者	Gong, X (reprint author), Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650201, Peoples R China
英文摘要	The difficulty in clarifying species of genus Ligularia Cass. has been attributed to rapid and continuous allopatric speciation in small and isolated populations, combined with interspecific diploid hybridization in the Qinghai-Tibetan Plateau and adjacent areas. However, no concrete example has been reported to prove this hypothesis. We studied a natural mixed population of six species of Ligularia in which some individuals were morphologically intermediate between L. subspicata and L. nelumbifolia. Based on DNA sequences (trnC-F, trnL-rpL32, trnQ-5' rps16, trnK-rps16, and internal transcribed spacer) and inter-simple sequence repeat data, we concluded that putative hybrids are primarily products of hybridization between L. nelumbifolia and L. subspicata. The other four species or additional, unknown species may also be involved in hybridization. This hybridization is bidirectional but asymmetrical. Hybrid individuals were mostly the first generation, but F-2 and later-generation hybrids were also present. Moreover, the backcrossed individuals detected indicate that natural gene flow occurs among at least three Ligularia species. Hybrids may become stabilized to form new species or may function as intermediates in evolutionary diversification.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	HOMOPLOID HYBRID SPECIATION ; SOUTHWESTERN SICHUAN ; GENETIC DIVERSITY ; NONCODING REGIONS ; CHINA ; DNA ; YUNNAN ; ANGIOSPERMS ; VIRGAUREA ; EVOLUTION
收录类别	SCI
资助信息	National Natural Science Foundation of China[30870242]; National Basic Research Program of China (973 Program)[2007CB411600]
语种	英语
WOS记录号	WOS:000295322200007
公开日期	2012-04-10
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/5295]
专题	昆明植物研究所_资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650201, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Rikkyo Univ, Dept Chem, Tokyo 1718501, Japan
推荐引用方式 GB/T 7714	Yu, Jiao-Jun,Kuroda, Chiaki,Gong, Xun. Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae)[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2011,49(5):438-448.
APA	Yu, Jiao-Jun,Kuroda, Chiaki,&Gong, Xun.(2011).Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae).JOURNAL OF SYSTEMATICS AND EVOLUTION,49(5),438-448.
MLA	Yu, Jiao-Jun,et al."Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae)".JOURNAL OF SYSTEMATICS AND EVOLUTION 49.5(2011):438-448.