Natural Hybridization and Introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in Four Different Locations

doi:10.1371/journal.pone.0115167

	Natural Hybridization and Introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in Four Different Locations
	Yu, Jiaojun 1,2; Kuroda, Chiaki 3; Gong, Xun1 ; Gong,X (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Plant Divers & Biogeog East Asia,Kunming,Peoples R China.; gongxun@mail.kib.ac.cn
	2014-12-31
发表期刊	PLOS ONE
卷号	9 期号:12 页码:e115167
摘要	Natural hybridization has been considered to represent an important factor influencing the high diversity of the genus Ligularia Cass. in the Hengduan Mountains, China. Natural hybridization has been confirmed to occur frequently in Ligularia. To date, however, it has been demonstrated only within a single population. In this paper, we present evidence of natural hybridization in Ligularia from four different locations. The internal transcribed spacer (ITS) region of the nuclear ribosomal DNA and three chloroplast intergenic spacers (trnK-rps16, trnL-rpl32 and trnQ-5'rps16) of 149 accessions of putative hybrids and their putative parents (L. cymbulifera and L. tongolensis) were analyzed for evidence of hybridization. The ITS data clearly distinguished two putative parental species and sympatric L. vellerea and supported the hypothesis that those morphological intermediates were products of natural hybridization between L. cymbulifera and L. tongolensis. Moreover, several identified morphological parents were actual introgressed products. Because of hybridization and introgression, chloroplast DNA sequences generated a poorly resolved network. The present results indicate that varying degrees of hybridization and introgression occur differently depending on the habitat context. We conclude that gene flow caused by natural hybridization in Ligularia indeed plays an important role in the species diversity.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0115167
收录类别	SCI
语种	英语
WOS记录号	WOS:000347119100030
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/19379
专题	资源植物与生物技术所级重点实验室
通讯作者	Gong,X (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Plant Divers & Biogeog East Asia,Kunming,Peoples R China.; gongxun@mail.kib.ac.cn
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Rikkyo Univ, Dept Chem, Tokyo 171, Japan
推荐引用方式 GB/T 7714	Yu, Jiaojun,Kuroda, Chiaki,Gong, Xun,et al. Natural Hybridization and Introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in Four Different Locations[J]. PLOS ONE,2014,9(12):e115167.
APA	Yu, Jiaojun,Kuroda, Chiaki,Gong, Xun,Gong,X ,&gongxun@mail.kib.ac.cn.(2014).Natural Hybridization and Introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in Four Different Locations.PLOS ONE,9(12),e115167.
MLA	Yu, Jiaojun,et al."Natural Hybridization and Introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in Four Different Locations".PLOS ONE 9.12(2014):e115167.

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