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Natural hybridization and introgression in sympatric Ligularia species (Asteraceae, Senecioneae)
Yu, Jiao-Jun1,2; Kuroda, Chiaki3; Gong, Xun1
Corresponding AuthorGong, X (reprint author), Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650201, Peoples R China
2011-09-01
Source PublicationJOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
Volume49Issue:5Pages:438-448
AbstractThe 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.
KeywordChloroplast Fragments Issr Markers Ligularia Natural Hybridization Nuclear Ribosomal Its
Subject AreaPlant Sciences
DOI10.1111/j.1759-6831.2011.00150.x
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000295322200007
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/5295
Collection资源植物与生物技术所级重点实验室
Affiliation1.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
Recommended Citation
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.
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