IOCAS-IR  > 海洋生态与环境科学重点实验室
The morphological and phylogenetic characterization for the dinoflagellate Margalefidinium fulvescens (=Cochlodinium fulvescens) isolated from the Jiaozhou Bay, China
Hu Zhangxi1,2,3; Deng Yunyan1,2,3; Li Yuhang4; Tang Ying Zhong1,2,3
2018-10-01
Source PublicationACTA OCEANOLOGICA SINICA
ISSN0253-505X
Volume37Issue:10Pages:11-17
Corresponding AuthorTang Ying Zhong(yingzhong.tang@qdio.ac.cn)
AbstractThe dinoflagellate genus Margalefidinium has been split from Cochlodinium as a new genus recently and Margalefidinium fulvescens is one of the five Margalefidinium species. Margalefidinium fulvescens is toxic and has been reported from the coastal waters of USA, Canada, Mexico, China, Japan, Indonesia, Korea, Pakistan and Spain. Here we provide the morphological and phylogenetic characterization for an isolate of it from the Jiaozhou Bay, Qingdao, China. Our results showed that the vegetative cells were subspherical to ellipsoidal, 34-60 m in length, and 19-41 m in width. Both single cell forms and colonies in chains of 2, 4, or 8 cells were observed in cultures, but chain forms with 2 or 4 cells were observed more often in the field samples. The cingulum was rather deep, encircling the cell approximately twice, but the sulcus was rather narrow, surrounding the cell about one turn. The nucleus was spherical and located at the central epicone. The chloroplasts were granular, brownish, and scattered peripherally. An orange pigmented body also appeared in the epicone. The apical groove appeared vase-like as previously described. Under epi-fluorescence microscopy, a pumpkin-like structure was clearly observed, in which cells were embedded. Cells were observed to exit from the structure, which led us to a hypothesis that the structure may provide cells a shelter to avoid predation or to respond to other stresses. The phylogenetic analyses based on partial LSU rDNA sequences indicated that M. fulvescens from the Jiaozhou Bay was grouped with M. fulvescens populations from other origins and closely related to the clade of M. polykrikoides. Our morphological observations and phylogenetic analyses together confirmed the presence of M. fulvescens in China and our monitoring has also observed the species dominant in the dinoflagellate community of the Jiaozhou Bay in the early autumn of 2015, which alerted us to continually monitor this bloom-forming species in the region.
KeywordMargalefidinium fulvescens morphology phylogeny pumpkin-like structure Jiaozhou Bay China
DOI10.1007/s13131-018-1295-0
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41476142] ; National Natural Science Foundation of China[61533011] ; National Natural Science Foundation of China[41776125] ; National Natural Science Foundation of China[41506143] ; NSFC-Shandong Joint Fund for Marine Ecology and Environmental Sciences[U1606404] ; Qingdao National Laboratory for Marine Science[2016ASKJ02] ; Creative Team Project of the Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology[LMEES-CTSP-2018-1]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000450463200003
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/156128
Collection海洋生态与环境科学重点实验室
Corresponding AuthorTang Ying Zhong
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China
First Author AffilicationKey Laboratory of Marine Ecology & Environmental Sciences, CAS
Corresponding Author AffilicationKey Laboratory of Marine Ecology & Environmental Sciences, CAS
Recommended Citation
GB/T 7714
Hu Zhangxi,Deng Yunyan,Li Yuhang,et al. The morphological and phylogenetic characterization for the dinoflagellate Margalefidinium fulvescens (=Cochlodinium fulvescens) isolated from the Jiaozhou Bay, China[J]. ACTA OCEANOLOGICA SINICA,2018,37(10):11-17.
APA Hu Zhangxi,Deng Yunyan,Li Yuhang,&Tang Ying Zhong.(2018).The morphological and phylogenetic characterization for the dinoflagellate Margalefidinium fulvescens (=Cochlodinium fulvescens) isolated from the Jiaozhou Bay, China.ACTA OCEANOLOGICA SINICA,37(10),11-17.
MLA Hu Zhangxi,et al."The morphological and phylogenetic characterization for the dinoflagellate Margalefidinium fulvescens (=Cochlodinium fulvescens) isolated from the Jiaozhou Bay, China".ACTA OCEANOLOGICA SINICA 37.10(2018):11-17.
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