Toward a new circumscription of the twinsorus-fern genus Diplazium (Athyriaceae): A molecular phylogeny with morphological implications and infrageneric taxonomy

doi:10.12705/623.8

	Toward a new circumscription of the twinsorus-fern genus Diplazium (Athyriaceae): A molecular phylogeny with morphological implications and infrageneric taxonomy
	Wei, Ran 1; Schneider, Harald 2; Zhang, Xian-Chun
	2013
发表期刊	TAXON
ISSN	0040-0262
卷号	62 期号:3 页码:441-457
摘要	Diplazium and allied segregates (Allantodia, Callipteris, Monomelangium) represent highly diverse genera belonging to the lady-fern family Athyriaceae. Because of the morphological diversity and lack of molecular phylogenetic analyses of this group of ferns, generic circumscription and infrageneric relationships within it are poorly understood. In the present study, the phylogenetic relationships of these genera were investigated using a comprehensive taxonomic sampling including 89 species representing all formerly accepted segregates. For each species, we sampled over 6000 DNA nucleotides of up to seven plastid genomic regions: atpA, atpB, matK, rbcL, rps4, rps4-trnSIGS, and trnL intron plus trnL-trnFIGS. Phylogenetic analyses including maximum parsimony, maximum likelihood and Bayesian methods congruently resolved Allantodia, Callipteris and Monomelangium nested within Diplazium; therefore a large genus concept of Diplazium is accepted to keep this group of ferns monophyletic and to avoid paraphyletic or polyphyletic taxa. Four well-supported clades and eight robust sub-clades were found in the phylogenetic topology. Reconstruction of the evolutionary pattern of morphological characters, such as dissections of leaves, petiole/rachis scales, and shapes of son, recovered some character combinations of systematic value for infrageneric classification. In light of morphological characters and our molecular phylogeny, a re-defined Diplazium and an infrageneric classification are proposed.
关键词	Allantodia Callipteris Diplazium molecular phylogeny Monomelangium morphological character evolution subgeneric classification
学科领域	Plant Sciences ; Evolutionary Biology
DOI	10.12705/623.8
收录类别	SCI
语种	英语
WOS关键词	EVOLUTIONARY LINEAGES ; CHLOROPLAST RBCL ; RAPID RADIATION ; POLYPODIACEAE ; GENERA ; INSIGHTS ; ANCIENT ; DRYOPTERIDACEAE ; DIVERSIFICATION ; GRAMMITIDACEAE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000322751100001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1996-8175
资助机构	National Science Foundation of China(National Natural Science Foundation of China (NSFC))
作者邮箱	WEI, RAN/M-1994-2018 ; Schneider, Harald/B-6681-2008
引用统计	被引频次：36[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28001
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nat Hist Museum, Dept Bot, London SW7 5BD, England
推荐引用方式 GB/T 7714	Wei, Ran,Schneider, Harald,Zhang, Xian-Chun. Toward a new circumscription of the twinsorus-fern genus Diplazium (Athyriaceae): A molecular phylogeny with morphological implications and infrageneric taxonomy[J]. TAXON,2013,62(3):441-457.
APA	Wei, Ran,Schneider, Harald,&Zhang, Xian-Chun.(2013).Toward a new circumscription of the twinsorus-fern genus Diplazium (Athyriaceae): A molecular phylogeny with morphological implications and infrageneric taxonomy.TAXON,62(3),441-457.
MLA	Wei, Ran,et al."Toward a new circumscription of the twinsorus-fern genus Diplazium (Athyriaceae): A molecular phylogeny with morphological implications and infrageneric taxonomy".TAXON 62.3(2013):441-457.

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