Phylogeny of the Genus Chrysanthemum L.: Evidence from Single-Copy   Nuclear Gene and Chloroplast DNA Sequences

doi:10.1371/journal.pone.0048970

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	Phylogeny of the Genus Chrysanthemum L.: Evidence from Single-Copy Nuclear Gene and Chloroplast DNA Sequences
	Liu, Ping-Li ; Wan, Qian ; Guo, Yan-Ping ; Yang, Ji ; Rao, Guang-Yuan
刊名	plos one
	2012
关键词	ALLOPOLYPLOID SPECIATION DIPHOSPHATE SYNTHASE MOLECULAR PHYLOGENY COMPLEX ASTERACEAE ANTHEMIDEAE ARTEMISIA RECONSTRUCTION RECOMBINATION SYSTEMATICS EVOLUTION
DOI	10.1371/journal.pone.0048970
英文摘要	Chrysanthemum L. (Asteraceae-Anthemideae) is a genus with rapid speciation. It comprises about 40 species, most of which are distributed in East Asia. Many of these are narrowly distributed and habitat-specific. Considerable variations in morphology and ploidy are found in this genus. Some species have been the subjects of many studies, but the relationships between Chrysanthemum and its allies and the phylogeny of this genus remain poorly understood. In the present study, 32 species/varieties from Chrysanthemum and 11 from the allied genera were analyzed using DNA sequences of the single-copy nuclear CDS gene and seven cpDNA loci (psbA-trnH, trnC-ycf6, ycf6-psbM, trnY-rpoB, rpS4-trnT, trnL-F, and rpL16). The cpDNA and nuclear CDS gene trees both suggest that 1) Chrysanthemum is not a monophyletic taxon, and the affinity between Chrysanthemum and Ajania is so close that these two genera should be incorporated taxonomically; 2) Phaeostigma is more closely related to the Chrysanthemum+Ajania than other generic allies. According to pollen morphology and to the present cpDNA and CDS data, Ajania purpurea is a member of Phaeostigma. Species differentiation in Chrysanthemum appears to be correlated with geographic and environmental conditions. The Chinese Chrysanthemum species can be divided into two groups, the C. zawadskii group and the C. indicum group. The former is distributed in northern China and the latter in southern China. Many polyploid species, such as C. argyrophyllum, may have originated from allopolyploidization involving divergent progenitors. Considering all the evidence from present and previous studies, we conclude that geographic and ecological factors as well as hybridization and polyploidy play important roles in the divergence and speciation of the genus Chrysanthemum.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000310601300029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); PubMed; 20; ARTICLE; 11; e48970; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/319937]
专题	生命科学学院
推荐引用方式 GB/T 7714	Liu, Ping-Li,Wan, Qian,Guo, Yan-Ping,et al. Phylogeny of the Genus Chrysanthemum L.: Evidence from Single-Copy Nuclear Gene and Chloroplast DNA Sequences[J]. plos one,2012.
APA	Liu, Ping-Li,Wan, Qian,Guo, Yan-Ping,Yang, Ji,&Rao, Guang-Yuan.(2012).Phylogeny of the Genus Chrysanthemum L.: Evidence from Single-Copy Nuclear Gene and Chloroplast DNA Sequences.plos one.
MLA	Liu, Ping-Li,et al."Phylogeny of the Genus Chrysanthemum L.: Evidence from Single-Copy Nuclear Gene and Chloroplast DNA Sequences".plos one (2012).