Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera

doi:10.1186/s12862-016-0626-z

	Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera
	Le Pechon, T; He, H; Zhang, L; Zhou, XM; Gao, XF; Zhang, LB; Zhang, LB (reprint author), Missouri Bot Garden, POB 299, St Louis, MO 63166 USA.
刊名	BMC EVOLUTIONARY BIOLOGY
	2016
卷号	16 页码:55（1-15）
关键词	Cyrtomium Dryopteridaceae Fern Phylogeny Hymaso Superclade Hysufi Clade Mcschmans Clade Phanerophlebia Polystichum
DOI	10.1186/s12862-016-0626-z
产权排序	1
文献子类	Article
英文摘要	Background: Polystichum (Dryopteridaceae) is probably the third largest fern genus in the world and contains ca. 500 species. Species of Polystichum occur on all continents except Antarctica, but its highest diversity is found in East Asia, especially Southwest China and adjacent regions. Previous studies typically had sparse taxon sampling and used limited DNA sequence data. Consequently, the majority of morphological hypotheses/classifications have never been tested using molecular data. Results: In this study, DNA sequences of five plastid loci of 177 accessions representing ca. 140 species of Polystichum and 13 species of the closely related genera were used to infer a phylogeny using maximum likelihood, Bayesian inference, and maximum parsimony. Our analyses show that (1) Polystichum is monophyletic, this being supported by not only molecular data but also morphological features and distribution information; (2) Polystichum is resolved into two strongly supported monophyletic clades, corresponding to the two subgenera, P. subg. Polystichum and P. subg. Haplopolystichum; (3) Accessions of P. subg. Polystichum are resolved into three major clades: clade K (P. sect. Xiphophyllum), clade L (P. sect. Polystichum), and the HYMASO superclade dominated by accessions of P. sect. Hypopeltis, P. sect. Macropolystichum, and P. sect. Sorolepidium, while those of P. subg. Haplopolystichum are resolved into eight major clades; and (4) The monophyly of the Afra clade (weakly supported), the Australasian clade (weakly supported), and the North American clade (strongly supported) is confirmed. Conclusions: Of the 23 sections of Polystichum recognized in a recent classification of the genus, four (P. sect. Hypopeltis, P. sect. Neopolystichum, P. sect. Sorolepidium, P. sect. Sphaenopolystichum) are resolved as non-monophyletic, 16 are recovered as monophyletic, and three are monospecific. Of the 16 monophyletic sections, two (P. sect. Adenolepia, P. sect. Cyrtogonellum) are weakly supported and 14 are strongly supported as monophyletic. The relationships of 11 sections (five in P. subg. Haplopolystichum; six in P. subg. Polystichum) are well resolved.
学科主题	Evolutionary Biology ; Genetics & Heredity
资助项目	Le Pechon, Timothee/0000-0003-3668-753X ; gao, xin fen/0000-0002-5703-1639 ; Zhang, Liang/0000-0003-3784-3135
项目编号	Le Pechon, Timothee/N-9247-2013
语种	英语
资助机构	Chengdu Institute of Biology, Chinese Academy of Sciences (CAS) ; Chengdu Institute of Biology, Chinese Academy of Sciences (CAS) ; National Geographical Society of the USA ; National Geographical Society of the USA ; CAS Research Fellowship for International Young Researchers [31150110463] ; CAS Research Fellowship for International Young Researchers [31150110463] ; Claude Leon Foundation ; Claude Leon Foundation ; National Natural Science Foundation of China [31370534, 31400196] ; National Natural Science Foundation of China [31370534, 31400196] ; Fondation Franklinia ; Fondation Franklinia ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Chengdu Institute of Biology, Chinese Academy of Sciences (CAS) ; Chengdu Institute of Biology, Chinese Academy of Sciences (CAS) ; National Geographical Society of the USA ; National Geographical Society of the USA ; CAS Research Fellowship for International Young Researchers [31150110463] ; CAS Research Fellowship for International Young Researchers [31150110463] ; Claude Leon Foundation ; Claude Leon Foundation ; National Natural Science Foundation of China [31370534, 31400196] ; National Natural Science Foundation of China [31370534, 31400196] ; Fondation Franklinia ; Fondation Franklinia ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/28147]
专题	成都生物研究所_生态研究
通讯作者	Zhang, LB (reprint author), Missouri Bot Garden, POB 299, St Louis, MO 63166 USA.
推荐引用方式 GB/T 7714	Le Pechon, T,He, H,Zhang, L,et al. Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera[J]. BMC EVOLUTIONARY BIOLOGY,2016,16:55（1-15）.
APA	Le Pechon, T.,He, H.,Zhang, L.,Zhou, XM.,Gao, XF.,...&Zhang, LB .(2016).Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera.BMC EVOLUTIONARY BIOLOGY,16,55（1-15）.
MLA	Le Pechon, T,et al."Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera".BMC EVOLUTIONARY BIOLOGY 16(2016):55（1-15）.