Molecular Phylogeny of the Cliff Ferns (Woodsiaceae: Polypodiales) with a Proposed Infrageneric Classification

doi:10.1371/journal.pone.0136318

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	Molecular Phylogeny of the Cliff Ferns (Woodsiaceae: Polypodiales) with a Proposed Infrageneric Classification
	Shao, Yizhen 2; Wei, Ran ; Zhang, Xianchun ; Xiang, Qiaoping
刊名	PLOS ONE
	2015
卷号	10 期号:9
ISSN号	1932-6203
DOI	10.1371/journal.pone.0136318
文献子类	Article
英文摘要	The cliff fern family Woodsiaceae has experienced frequent taxonomic changes at the familial and generic ranks since its establishment. The bulk of its species were placed in Woodsia, while Cheilanthopsis, Hymenocystis, Physematium, and Protowoodsia are segregates recognized by some authors. Phylogenetic relationships among the genera of Woodsiaceae remain unclear because of the extreme morphological diversity and inadequate taxon sampling in phylogenetic studies to date. In this study, we carry out comprehensive phylogenetic analyses of Woodsiaceae using molecular evidence from four chloroplast DNA markers (atpA, matK, rbcL and trnL-F) and covering over half the currently recognized species. Our results show three main clades in Woodsiaceae corresponding to Physematium (clade I), Cheilanthopsis-Protowoodsia (clade II) and Woodsia s.s. (clade III). In the interest of preserving monophyly and taxonomic stability, a broadly defined Woodsia including the other segregates is proposed, which is characterized by the distinctive indument and inferior indusia. Therefore, we present a new subgeneric classification of the redefined Woodsia based on phylogenetic and ancestral state reconstructions to better reflect the morphological variation, geographic distribution pattern, and evolutionary history of the genus. Our analyses of the cytological character evolution support multiple aneuploidy events that have resulted in the reduction of chromosome base number from 41 to 33, 37, 38, 39 and 40 during the evolutionary history of the cliff ferns.
学科主题	Multidisciplinary Sciences
出版地	SAN FRANCISCO
WOS关键词	EUPOLYPOD II FERNS ; RBCL NUCLEOTIDE-SEQUENCES ; F REGION SEQUENCES ; GENE-SEQUENCES ; ATHYRIACEAE ; INFERENCE ; INSIGHTS ; MRBAYES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000360897600005
资助机构	National Natural Science Foundation of China [31370260, 31170199]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/26004]
专题	系统与进化植物学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Shao, Yizhen,Wei, Ran,Zhang, Xianchun,et al. Molecular Phylogeny of the Cliff Ferns (Woodsiaceae: Polypodiales) with a Proposed Infrageneric Classification[J]. PLOS ONE,2015,10(9).
APA	Shao, Yizhen,Wei, Ran,Zhang, Xianchun,&Xiang, Qiaoping.(2015).Molecular Phylogeny of the Cliff Ferns (Woodsiaceae: Polypodiales) with a Proposed Infrageneric Classification.PLOS ONE,10(9).
MLA	Shao, Yizhen,et al."Molecular Phylogeny of the Cliff Ferns (Woodsiaceae: Polypodiales) with a Proposed Infrageneric Classification".PLOS ONE 10.9(2015).