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Reassessment of the species Stigeoclonium polyrhizum (Chaetophoraceae, Chaetophorales) based on morphological and molecular data
Liu, Benwen1,2; Liu, Xudong1,2; Wang, Qinghua1,2; Hu, Zhengyu3; Liu, Guoxiang1
Corresponding AuthorLiu, Guoxiang(liugx@ihb.ac.cn)
2018-01-05
Source PublicationPHYTOTAXA
ISSN1179-3155
Volume333Issue:1Pages:86-98
AbstractFour specimens of Stigeoclonium spp., sampled in China between 2015 and 2016, were identified as the species Stigeoclonium polyrhizum (Chaetophoraceae, Chaetophorales) due to their unique morphology. A large part of the main filament and branches was tightly enclosed by numerous rhizoidal branches, which extended downward to the base of the plant to form an expanded holdfast. S. polyrhizum has previously been regarded as a synonym of S. longipilum or other related species by most phycologists. Therefore, a reassessment of S. polyrhizum based on morphological and molecular data was conducted. Rhizoidal branch development of S. polyrhizum was also described, showing the abundant rhizoidal branches present from the juvenile stage to the mature stage under controlled culture conditions. Phylogenetic evidence, using nuclear-encoded SSU rDNA data, clearly revealed that the Chaetophoraceae diverged into two well-supported sister clades: the Chaetophoraclade and the Fritschiella-clade. S. polyrhizum was included in the Fritschiella-clade instead of the Chaetophora-clade where Chaetophora draparnaldioides (S. longipilum) was found. The morphological and molecular data unambiguously show that S. polyrhizum is a valid species rather than a synonym of S. longipilum or other related species. Thylakoid bands appressed to the periphery of the pyrenoid matrix of S. polyrhizum was also described.
KeywordChaetophora draparnaldioides Morphology Pyrenoid Polyphyly Stigeoclonium longipilum
DOI10.11646/phytotaxa.333.1.6
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 ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31670202] ; China Agriculture Research System[CARS-50]
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000419733100006
WOS KeywordPHYLOGENETIC ANALYSIS ; CHLOROPHYCEAE ; DRAPARNALDIA
PublisherMAGNOLIA PRESS
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 ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System ; China Agriculture Research System
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/30081
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorLiu, Guoxiang
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Liu, Benwen,Liu, Xudong,Wang, Qinghua,et al. Reassessment of the species Stigeoclonium polyrhizum (Chaetophoraceae, Chaetophorales) based on morphological and molecular data[J]. PHYTOTAXA,2018,333(1):86-98.
APA Liu, Benwen,Liu, Xudong,Wang, Qinghua,Hu, Zhengyu,&Liu, Guoxiang.(2018).Reassessment of the species Stigeoclonium polyrhizum (Chaetophoraceae, Chaetophorales) based on morphological and molecular data.PHYTOTAXA,333(1),86-98.
MLA Liu, Benwen,et al."Reassessment of the species Stigeoclonium polyrhizum (Chaetophoraceae, Chaetophorales) based on morphological and molecular data".PHYTOTAXA 333.1(2018):86-98.
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