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Morphology, ultrastructure, and molecular phylogeny of the unarmoured dinoflagellate Kirithra sigma sp. nov. (Ceratoperidiniaceae, Dinophyceae)
Hu, Zhangxi1,2,3; Li, Zhun4; Deng, Yunyan1,2,3; Iwataki, Mitsunori5; Luo, Zhaohe6; Wang, Jinxiu1; Sun, Yuanyuan7; Zhao, Zengxia8; Gu, Haifeng6; Shin, Hyeon Ho9; Tang, Ying Zhong1,2,3
2020-07-12
Source PublicationPHYCOLOGIA
ISSN0031-8884
Pages12
Corresponding AuthorShin, Hyeon Ho(shh961121@kiost.ac.kr)
AbstractA Gymnodinium-like dinoflagellate, Kirithra sigma sp. nov., was isolated from Jiaozhou Bay, China, and the southern coast of Korea, and examined by light, scanning, and transmission electron microscopy. Pigment composition and nuclear-encoded partial large subunit ribosomal RNA (LSU rRNA) gene were determined. Cells were oval-shaped (26.4-36.4 mu m long and 17.7-27.2 mu m wide), with a conical epicone and hemispherical hypocone. Its cingulum and sulcus were deep and wide. The cingulum encircled the cell completely, its ends slightly overlapping and displaced one to two cingular widths; the sulcus and sulcal extension formed a sigmoid curve. The anterior sulcal extension contacted the apical structure complex (ASC). The ASC formed a complete circle, consisting of three parallel series of vesicles, and the amphiesmal vesicles within ASC were arranged with one central vesicle (sometimes two) encircled by approximately three rows of polygonal amphiesmal vesicles. Polygonal amphiesmal vesicles of different sizes covered the whole cell surface. The subspherical nucleus was located in the hypocone. Pigment analysis showed that peridinin was the main accessory pigment. The present species is morphologically similar to Kirithra asteribut differs in numbers and rows of amphiesmal vesicles within the ASC, absence of ventral pore, and a sigmoid curve formed by the sulcus and sulcal extension. The partial LSU rRNA gene sequence (c. 1400 bases) of K. sigma differed byc. 5.3% from that of K. asteri. Molecular phylogeny revealed that K. sigma formed an independent sister clade to K. asteri, indicating they are congeneric but different species.
KeywordAmphiesmal vesicles Apical structure complex LSU rRNA gene Pigments
DOI10.1080/00318884.2020.1771660
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFC1404300] ; Youth Talent Support Program of the Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao)[LMEES-YTSP-2018-01-04] ; National Science Foundation of China[41776125] ; National Science Foundation of China[41976134] ; National Science Foundation of China[61533011] ; Institute of Bioscience and Biotechnology (KRIBB) Research Initiative Program ; Marine Biotechnology Programme of the Korea Institute of Marine Science and Technology Promotion (KIMST) - Ministry of Oceans and Fisheries (MOF)[20170431] ; KIOST project[PE99721]
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000552143600001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/168067
Collection实验海洋生物学重点实验室
胶州湾海洋生态系统国家野外研究站
Corresponding AuthorShin, Hyeon Ho
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
4.Korea Res Inst Biosci & Biotechnol, Biol Resource Ctr, Korean Collect Type Cultures KCTC, Jeonbuk 56212, South Korea
5.Univ Tokyo, Asian Nat Environm Sci Ctr, Bunkyo Ku, 1-1-1 Yayoi, Tokyo 1138657, Japan
6.Minist Nat Resources, Inst Oceanog 3, Xiamen 361005, Peoples R China
7.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
8.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
9.Korea Inst Ocean Sci & Technol, Lib Marine Samples, Geoje 53201, South Korea
First Author AffilicationKey Laboratory of Marine Ecology & Environmental Sciences, CAS;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Hu, Zhangxi,Li, Zhun,Deng, Yunyan,et al. Morphology, ultrastructure, and molecular phylogeny of the unarmoured dinoflagellate Kirithra sigma sp. nov. (Ceratoperidiniaceae, Dinophyceae)[J]. PHYCOLOGIA,2020:12.
APA Hu, Zhangxi.,Li, Zhun.,Deng, Yunyan.,Iwataki, Mitsunori.,Luo, Zhaohe.,...&Tang, Ying Zhong.(2020).Morphology, ultrastructure, and molecular phylogeny of the unarmoured dinoflagellate Kirithra sigma sp. nov. (Ceratoperidiniaceae, Dinophyceae).PHYCOLOGIA,12.
MLA Hu, Zhangxi,et al."Morphology, ultrastructure, and molecular phylogeny of the unarmoured dinoflagellate Kirithra sigma sp. nov. (Ceratoperidiniaceae, Dinophyceae)".PHYCOLOGIA (2020):12.
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