Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont

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	Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont
	Xia, Shuang 1,2; Zhang, Qi 1; Zhu, Huan 1,2; Cheng, Yingyin 3; Liu, Guoxiang 1; Hu, Zhengyu 1
刊名	PLOS ONE
	2013-01-07
卷号	8 期号:1 页码:e53820
关键词	MARINE DINOFLAGELLATE ACIDOTUM DINOPHYCEAE GREEN DINOFLAGELLATE SEQUENCE ALIGNMENT SP-NOV EVOLUTION PHYLOGENY ULTRASTRUCTURE STRATEGIES NUCLEAR
ISSN号	1932-6203
通讯作者	Liu, GX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Peoples R China.
中文摘要	New specimens of the kleptoplastidal dinoflagellate Gymnodinium eucyaneum Hu were collected in China. We investigated the systematics of the dinoflagellate and the origin of its endosymbiont based on light morphology and phylogenetic analyses using multiple DNA sequences. Cells were dorsoventrally flattened with a sharply acute hypocone and a hemispherical epicone. The confusion between G. eucyaneum and G. acidotum Nygaard still needs to be resolved. We found that the hypocone was conspicuously larger than the epicone in most G. eucyaneum cells, which differed from G. acidotum, but there were a few cells whose hypocone and epicone were of nearly the same size. In addition, there was only one site difference in the partial nuclear LSU rDNA sequences of a sample from Japan given the name G. acidotum and G. eucyaneum in the present study, which suggest that G. eucyaneum may be a synonym of G. acidotum. Spectroscopic analyses and phylogenetic analyses based on nucleomorph SSU rDNA sequences and chloroplast 23 s rDNA sequences suggested that the endosymbiont of G. eucyaneum was derived from Chroomonas (Cryptophyta), and that it was most closely related to C. coerulea Skuja. Moreover, the newly reported kleptoplastidal dinoflagellates G. myriopyrenoides and G. eucyaneum in our study were very similar, and the taxonomy of kleptoplastidal dinoflagellates was discussed.
英文摘要	New specimens of the kleptoplastidal dinoflagellate Gymnodinium eucyaneum Hu were collected in China. We investigated the systematics of the dinoflagellate and the origin of its endosymbiont based on light morphology and phylogenetic analyses using multiple DNA sequences. Cells were dorsoventrally flattened with a sharply acute hypocone and a hemispherical epicone. The confusion between G. eucyaneum and G. acidotum Nygaard still needs to be resolved. We found that the hypocone was conspicuously larger than the epicone in most G. eucyaneum cells, which differed from G. acidotum, but there were a few cells whose hypocone and epicone were of nearly the same size. In addition, there was only one site difference in the partial nuclear LSU rDNA sequences of a sample from Japan given the name G. acidotum and G. eucyaneum in the present study, which suggest that G. eucyaneum may be a synonym of G. acidotum. Spectroscopic analyses and phylogenetic analyses based on nucleomorph SSU rDNA sequences and chloroplast 23 s rDNA sequences suggested that the endosymbiont of G. eucyaneum was derived from Chroomonas (Cryptophyta), and that it was most closely related to C. coerulea Skuja. Moreover, the newly reported kleptoplastidal dinoflagellates G. myriopyrenoides and G. eucyaneum in our study were very similar, and the taxonomy of kleptoplastidal dinoflagellates was discussed.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	MARINE DINOFLAGELLATE ; ACIDOTUM DINOPHYCEAE ; GREEN DINOFLAGELLATE ; SEQUENCE ALIGNMENT ; SP-NOV ; EVOLUTION ; PHYLOGENY ; ULTRASTRUCTURE ; STRATEGIES ; NUCLEAR
收录类别	SCI
资助信息	National Natural Science Foundation of China [30970501, 31270252]
语种	英语
WOS记录号	WOS:000313429100120
公开日期	2013-10-31
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19357]
专题	水生生物研究所_藻类生物学及应用研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, Ctr Water Environm & Human Hlth, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Xia, Shuang,Zhang, Qi,Zhu, Huan,et al. Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont[J]. PLOS ONE,2013,8(1):e53820.
APA	Xia, Shuang,Zhang, Qi,Zhu, Huan,Cheng, Yingyin,Liu, Guoxiang,&Hu, Zhengyu.(2013).Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont.PLOS ONE,8(1),e53820.
MLA	Xia, Shuang,et al."Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont".PLOS ONE 8.1(2013):e53820.