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学科主题: Multidisciplinary Sciences
题名: Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum
作者: [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
通讯作者: djqiu@scsio.ac.cn ; senjie.lin@uconn.edu
刊名: PLOS ONE
发表日期: 2013
卷: 8, 期:8, 页:-
部门归属: LMB
资助者: 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.
摘要: Traditionally 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.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000323425700038
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10996
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Recommended Citation:
[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.Apical Groove Type and Molecular Phylogeny Suggests Reclassification of Cochlodinium geminatum as Polykrikos geminatum,PLOS ONE,2013,8(8):-
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