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Systematics of a Kleptoplastidal Dinoflagellate, Gymnodinium eucyaneum Hu (Dinophyceae), and Its Cryptomonad Endosymbiont
Xia, Shuang1,2; Zhang, Qi1; Zhu, Huan1,2; Cheng, Yingyin3; Liu, Guoxiang1; Hu, Zhengyu1; Liu, GX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Peoples R China.
2013-01-07
Source PublicationPLOS ONE
ISSN1932-6203
Volume8Issue:1Pages:e53820
AbstractNew 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.; 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.
SubtypeArticle
KeywordMarine Dinoflagellate Acidotum Dinophyceae Green Dinoflagellate Sequence Alignment Sp-nov Evolution Phylogeny Ultrastructure Strategies Nuclear
Department[Xia, Shuang ; Zhang, Qi ; Zhu, Huan ; Liu, Guoxiang ; Hu, Zhengyu] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Peoples R China ; [Xia, Shuang ; Zhu, Huan] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China ; [Cheng, Yingyin] Chinese Acad Sci, Inst Hydrobiol, Ctr Water Envionm & Human Hlth, Wuhan, Peoples R China
DOI10.1371/journal.pone.0053820
WOS HeadingsScience & Technology
Funding OrganizationNational Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252]
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000313429100120
WOS KeywordMARINE DINOFLAGELLATE ; ACIDOTUM DINOPHYCEAE ; GREEN DINOFLAGELLATE ; SEQUENCE ALIGNMENT ; SP-NOV ; EVOLUTION ; PHYLOGENY ; ULTRASTRUCTURE ; STRATEGIES ; NUCLEAR
Funding OrganizationNational Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252] ; National Natural Science Foundation of China [30970501, 31270252]
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19357
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorLiu, GX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Peoples R China.
Affiliation1.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
Recommended Citation
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.,...&Liu, GX .(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.
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