Phylogeny and speciation in Saxifraga sect. Ciliatae (Saxifragaceae): Evidence from psbA-trnH, trnL-F and ITS sequences

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	Phylogeny and speciation in Saxifraga sect. Ciliatae (Saxifragaceae): Evidence from psbA-trnH, trnL-F and ITS sequences
	Gao, Qing-Bo 1; Li, Yin-Hu 1,2; Gornall, Richard J.3; Zhang, Zhuo-Xin 4; Zhang, Fa-Qi 1; Xing, Rui 1; Fu, Peng-Cheng 1,2; Wang, Jiu-Li 1,2; Liu, Hai-Rui 1,2; Tian, Zun-Zhe 1,2; Chen, Shi-Long 1
	2015-08-28
发表期刊	TAXON
卷号	64 期号:4 页码:703-713
文章类型	Article
摘要	Nearly half of the species in the large genus Saxifraga belong to Saxifraga sect. Ciliatae, a largely Sino-Himalayan taxon. We report here that evidence from chloroplast DNA sequences (psbA-trnH, trnL-F) and from nuclear sequences (ITS) indicates that this section is monophyletic and composed of at least three main lineages, corresponding to (1) a clade made up of species from S. subsect. Gemmiparae, subsect. Cinerascentes, subsect. Flagellares and subsect. Hemisphaericae, in which the last three subsections are nested in the first; (2) a clade of species belonging to S. subsect. Rosulares (including S. subsect. Serpyllifoliae); and (3) a clade of species belonging to S. subsect. Hirculoideae. Species relationships in S. subsect. Rosulares and subsect. Hirculoideae are not well resolved. A molecular clock analysis indicates that the diversification of S. sect. Ciliatae into its three lineages dates from ca. 9.48 Ma, coinciding with orogenic events associated with one of the most important phases of uplift of the Qinghai-Tibet Plateau. Extensive diversifications within S. subsect. Rosulares and subsect. Hirculoideae have been more recent (ca. 4.51 Ma and 2.12 Ma, respectively), again correlated with Qinghai-Tibet Plateau uplift events and, in the case of S. subsect. Hirculoideae, have occurred at a rate comparable to that seen in the radiation of Hawaiian fruit flies.; Nearly half of the species in the large genus Saxifraga belong to Saxifraga sect. Ciliatae, a largely Sino-Himalayan taxon. We report here that evidence from chloroplast DNA sequences (psbA-trnH, trnL-F) and from nuclear sequences (ITS) indicates that this section is monophyletic and composed of at least three main lineages, corresponding to (1) a clade made up of species from S. subsect. Gemmiparae, subsect. Cinerascentes, subsect. Flagellares and subsect. Hemisphaericae, in which the last three subsections are nested in the first; (2) a clade of species belonging to S. subsect. Rosulares (including S. subsect. Serpyllifoliae); and (3) a clade of species belonging to S. subsect. Hirculoideae. Species relationships in S. subsect. Rosulares and subsect. Hirculoideae are not well resolved. A molecular clock analysis indicates that the diversification of S. sect. Ciliatae into its three lineages dates from ca. 9.48 Ma, coinciding with orogenic events associated with one of the most important phases of uplift of the Qinghai-Tibet Plateau. Extensive diversifications within S. subsect. Rosulares and subsect. Hirculoideae have been more recent (ca. 4.51 Ma and 2.12 Ma, respectively), again correlated with Qinghai-Tibet Plateau uplift events and, in the case of S. subsect. Hirculoideae, have occurred at a rate comparable to that seen in the radiation of Hawaiian fruit flies.
关键词	Chloroplast Dna Its Phylogeny Qinghai-tibet Plateau Saxifragaceae Saxifraga Sect. Ciliatae
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	CHLOROPLAST DNA ; TIBETAN PLATEAU ; RHEUM POLYGONACEAE ; EVOLUTION ; DIVERSIFICATION ; NUCLEAR ; BIOGEOGRAPHY ; RADIATION ; UPLIFT ; TREES
收录类别	SCI
语种	英语
WOS研究方向	Plant Sciences ; Evolutionary Biology
WOS类目	Plant Sciences ; Evolutionary Biology
WOS记录号	WOS:000361531700003
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5522
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adapt & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Univ Leicester, Dept Biol, Leicester LE1 7RH, Leics, England 4.Chinese Acad Sci, South China Bot Garden, Key Lab Plant Resources & Sustainable Utilizat, Guangzhou 510650, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Gao, Qing-Bo,Li, Yin-Hu,Gornall, Richard J.,et al. Phylogeny and speciation in Saxifraga sect. Ciliatae (Saxifragaceae): Evidence from psbA-trnH, trnL-F and ITS sequences[J]. TAXON,2015,64(4):703-713.
APA	Gao, Qing-Bo.,Li, Yin-Hu.,Gornall, Richard J..,Zhang, Zhuo-Xin.,Zhang, Fa-Qi.,...&Chen, Shi-Long.(2015).Phylogeny and speciation in Saxifraga sect. Ciliatae (Saxifragaceae): Evidence from psbA-trnH, trnL-F and ITS sequences.TAXON,64(4),703-713.
MLA	Gao, Qing-Bo,et al."Phylogeny and speciation in Saxifraga sect. Ciliatae (Saxifragaceae): Evidence from psbA-trnH, trnL-F and ITS sequences".TAXON 64.4(2015):703-713.