Frequent gene flow blurred taxonomic boundaries of sections in Lilium L. (Liliaceae)
Gong, Xun1; Hung, Kuo-Hsiang2; Ting, Yu-Wei3; Hsu, Tsai-Wen4; Malikova, Lenka3,5; Huyen Trang Tran3,6; Huang, Chao-Li7; Liu, Shih-Hui8,9; Chiang, Tzen-Yuh3,10
2017-08-25
发表期刊PLOS ONE
ISSN1932-6203
卷号12期号:8页码:e0183209
摘要Gene flow between species may last a long time in plants. Reticulation inevitably causes difficulties in phylogenetic reconstruction. In this study, we looked into the genetic divergence and phylogeny of 20 Lilium species based on multilocus analyses of 8 genes of chloroplast DNA (cpDNA), the internally transcribed nuclear ribosomal DNA (nrITS) spacer and 20 loci extracted from the expressed sequence tag (EST) libraries of L. longiflorum Thunb. and L. formosanum Wallace. The phylogeny based on the combined data of the maternally inherited cpDNA and nrITS was largely consistent with the taxonomy of Lilium sections. This phylogeny was deemed the hypothetical species tree and uncovered three groups, i.e., Cluster A consisting of 4 taxa from the sections Pseudolirium and Liriotypus, Cluster B consisting of the 4 taxa from the sections Leucolirion, Archelirion and Daurolirion, and Cluster C comprising 10 taxa mostly from the sections Martagon and Sinomartagon. In contrast, systematic inconsistency occurred across the EST loci, with up to 19 genes (95%) displaying tree topologies deviating from the hypothetical species tree. The phylogenetic incongruence was likely attributable to the frequent genetic exchanges between species/sections, as indicated by the high levels of genetic recombination and the IMa analyses with the EST loci. Nevertheless, multilocus analysis could provide complementary information among the loci on the species split and the extent of gene flow between the species. In conclusion, this study not only detected frequent gene flow among Lilium sections that resulted in phylogenetic incongruence but also reconstructed a hypothetical species tree that gave insights into the nature of the complex relationships among Lilium species.
关键词Nuclear Ribosomal Dna Transcribed Spacer Region Molecular Phylogeny European Lilies Sequence Data Plant Dna Evolutionary Chloroplast Genome Incongruence
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/54912
专题植物化学与西部植物资源持续利用国家重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Natl Pingtung Univ Sci & Technol, Grad Inst Bioresources, Pingtung, Taiwan
3.Natl Cheng Kung Univ, Dept Life Sci, Tainan, Taiwan
4.Endem Species Res Inst, Nantou, Taiwan
5.Inst Bot CAS, Trebon, Czech Republic
6.Vinh Univ, Inst Nat Sci Educ, Vinh, Nghe An, Vietnam
7.Natl Cheng Kung Univ, Inst Trop Plant Sci, Tainan, Taiwan
8.St Louis Univ, Dept Biol, St Louis, MO 63107 USA
9.Missouri Bot Garden, St Louis, MO 63110 USA
10.Natl Cheng Kung Univ, Univ Ctr Biosci & Biotechnol, Tainan, Taiwan
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Gong, Xun,Hung, Kuo-Hsiang,Ting, Yu-Wei,et al. Frequent gene flow blurred taxonomic boundaries of sections in Lilium L. (Liliaceae)[J]. PLOS ONE,2017,12(8):e0183209.
APA Gong, Xun.,Hung, Kuo-Hsiang.,Ting, Yu-Wei.,Hsu, Tsai-Wen.,Malikova, Lenka.,...&Chiang, Tzen-Yuh.(2017).Frequent gene flow blurred taxonomic boundaries of sections in Lilium L. (Liliaceae).PLOS ONE,12(8),e0183209.
MLA Gong, Xun,et al."Frequent gene flow blurred taxonomic boundaries of sections in Lilium L. (Liliaceae)".PLOS ONE 12.8(2017):e0183209.
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