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Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum
[Qiu, Dajun; Huang, Liangmin; Liu, Sheng; Lin, Senjie] Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China; [Zhang, Huan; Lin, Senjie] Univ Connecticut, Dept Marine Sci, Groton, CT 06340 USA; djqiu@scsio.ac.cn; senjie.lin@uconn.edu
2013
Source PublicationPLOS ONE
ISSN1932-6203
Volume8Issue:8Pages:-
AbstractTraditionally Cocholodinium and Gymnodinium sensu lato clade are distinguished based on the cingulum turn number, which has been increasingly recognized to be inadequate for Gymnodiniales genus classification. This has been improved by the combination of the apical groove characteristics and molecular phylogeny, which has led to the erection of several new genera (Takayama, Akashiwo, Karenia, and Karlodinium). Taking the apical groove characteristics and molecular phylogeny combined approach, we reexamined the historically taxonomically uncertain species Cochlodinium geminatum that formed massive blooms in Pearl River Estuary, China, in recent years. Samples were collected from a bloom in 2011 for morphological, characteristic pigment, and molecular analyses. We found that the cingulum in this species wraps around the cell body about 1.2 turns on average but can appear under the light microscopy to be >1.5 turns after the cells have been preserved. The shape of its apical groove, however, was stably an open-ended anticlockwise loop of kidney bean shape, similar to that of Polykrikos. Furthermore, the molecular phylogenetic analysis using 18S rRNA-ITS-28S rRNA gene cistron we obtained in this study also consistently placed this species closest to Polykrikos within the Gymnodinium sensu stricto clade and set it far separated from the clade of Cochlodinium. These results suggest that this species should be transferred to Polykrikos as Polykrikos geminatum. Our results reiterate the need to use the combination of apical groove morphology and molecular phylogeny for the classification of species within the genus of Cochlodinium and other Gymnodiniales lineages.
DepartmentLMB
Subject AreaMultidisciplinary Sciences
Funding OrganizationThis research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript.
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Language英语
Funding OrganizationThis research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript. ; This research is supported by the National Science Foundation of China (41129001, 41130855, 41006067) (http://www.nsfc.gov.cn/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of manuscript.
WOS IDWOS:000323425700038
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10996
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authordjqiu@scsio.ac.cn; senjie.lin@uconn.edu
Recommended Citation
GB/T 7714
[Qiu, Dajun,Huang, Liangmin,Liu, Sheng,et al. Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum[J]. PLOS ONE,2013,8(8):-.
APA [Qiu, Dajun.,Huang, Liangmin.,Liu, Sheng.,Lin, Senjie] Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China.,[Zhang, Huan.,...&senjie.lin@uconn.edu.(2013).Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum.PLOS ONE,8(8),-.
MLA [Qiu, Dajun,et al."Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum".PLOS ONE 8.8(2013):-.
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