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Molecular phylogeny and taxonomy of the genus Chaetophora (Chlorophyceae, Chlorophyta), including descriptions of Chaetophoropsis aershanensis gen. et sp. nov.
Liu, Benwen1,2; Xiong, Qian1,2; Liu, Xudong1,2; Liu, Guoxiang1; Hu, Zhengyu3
Corresponding AuthorLiu, Guoxiang(liugx@ihb.ac.cn)
2019-02-01
Source PublicationJOURNAL OF PHYCOLOGY
ISSN0022-3646
Volume55Issue:1Pages:74-83
AbstractThe broadly defined genus Chaetophora consisted of species with minute, uniseriate branching filaments enveloped in soft or firm mucilage forming macroscopic growths that are spherical, hemispherical, and tubercular or arbuscular, growing epiphytically on freshwater aquatic plants and other submerged surfaces in standing or fast-flowing water. Recent molecular analyses clearly showed that this genus was polyphyletic. In this study, eight strains of Chaetophora and three strains of Stigeoclonium were identified and successfully cultured. In combination with the morphological data, a concatenated data set of four markers (18S + 5.8S + ITS2+ partial 28S rDNA) was also used to determine their taxonomic relationships and phylogenetic positions. The molecular analysis resolved the broadly defined Chaetophora to at least two genera. Species with a globose thallus of genus Chaetophora formed a separate monophyletic clade, which clearly separated from, a type of lobe-form Chaetophora species. Therefore, we propose to erect a new genus, Chaetophoropsis, which includes all globose species of the Chaetophora. Chaetophoropsis aershanensis was determined to be a new species, based on its special characteristic of profuse long rhizoids. Stigeoclonium polyrhizum, as the closest relative to Chaetophoropsis, revealed its distant relationships to other species of Stigeoclonium. A globose thallus with a thick, soft mucilage matrix, and special rhizoidal branches lent further support to the placement of S. polyrhizum in the genus Chaetophoropsis and had the closest relationship to C. aershanensis. Taxonomic diversity was proven by distinctive morphological differences and by phylogenetic divergence in the broadly defined Chaetophora identified herein.
KeywordChaetophora Chaetophoraceae Chaetophorales Chaetophoropsis aershanensis sp. nov. Chaetophoropsis gen. nov. Stigeoclonium polyrhizum
DOI10.1111/jpy.12803
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31770220] ; National Natural Science Foundation of China[31670202]
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000459455700007
PublisherWILEY
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28027
Collection藻类生物学及应用研究中心
Corresponding AuthorLiu, Guoxiang
Affiliation1.Chinese Acad Sci, Key Lab Algal Biol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Liu, Benwen,Xiong, Qian,Liu, Xudong,et al. Molecular phylogeny and taxonomy of the genus Chaetophora (Chlorophyceae, Chlorophyta), including descriptions of Chaetophoropsis aershanensis gen. et sp. nov.[J]. JOURNAL OF PHYCOLOGY,2019,55(1):74-83.
APA Liu, Benwen,Xiong, Qian,Liu, Xudong,Liu, Guoxiang,&Hu, Zhengyu.(2019).Molecular phylogeny and taxonomy of the genus Chaetophora (Chlorophyceae, Chlorophyta), including descriptions of Chaetophoropsis aershanensis gen. et sp. nov..JOURNAL OF PHYCOLOGY,55(1),74-83.
MLA Liu, Benwen,et al."Molecular phylogeny and taxonomy of the genus Chaetophora (Chlorophyceae, Chlorophyta), including descriptions of Chaetophoropsis aershanensis gen. et sp. nov.".JOURNAL OF PHYCOLOGY 55.1(2019):74-83.
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