Discovery of a New Clade Nested Within the Genus Alexandrium (Dinophyceae): Morpho-molecular Characterization of Centrodinium punctatum (Cleve) FJR Taylor SCIE SCOPUS

Cited 5 time in WEB OF SCIENCE Cited 7 time in Scopus
Title
Discovery of a New Clade Nested Within the Genus Alexandrium (Dinophyceae): Morpho-molecular Characterization of Centrodinium punctatum (Cleve) FJR Taylor
Author(s)
Li, Zhun; Mertens, Kenneth Neil; Nezan, Elisabeth; Chomerat, Nicolas; Bilien, Gwenael; Iwataki, Mitsunori; Shin, Hyeon Ho
KIOST Author(s)
Shin, Hyeon Ho(신현호)
Publication Year
2019-04
Abstract
Investigation of phytoplankton from East China Sea of the Pacific Ocean, offshore Reunion Island of the Indian Ocean, and the French Atlantic coast revealed a species of poorly known armored fusiform dinoflagellate. To clarify this species, morphology and phylogeny based on mitochondria! and nuclear protein gene sequence (Cox1, Cob and Hsp90) concatenated with the SSU, ITS region and LSU rDNA sequences were analysed. Epifluorescence and scanning electron microscopy observations revealed that the nucleus of the specimen was elongated, sausage-shaped and located equatorially on the left lateral side of the cell, and that the plate formula is Po, 3', 1a, 6 '', 6C, 8S, 5''', 1p, 2 ''''. These morphological features indicate that the species can be assigned to Centrodinium punctatum. Interestingly, the phylogenetic analyses placed this species within the Alexandrium Glade, with Alexandrium affine being its closest relative. This indicates that genus Alexandrium is not monophyletic. The most similar morphological traits between C. punctatum and Alexandrium species were the shape of apical pore plate and the arrangement of the sulcal plates. However, since there are significant morphological differences between C. punctatum and Alexandrium species, further studies are needed to clarify the relation between the morphology and molecular phylogeny of other Centrodinium-related fusiform species. (C) 2019 Elsevier GmbH. All rights reserved.
ISSN
1434-4610
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/661
DOI
10.1016/j.protis.2019.02.003
Bibliographic Citation
PROTIST, v.170, no.2, pp.168 - 186, 2019
Publisher
ELSEVIER GMBH
Subject
CYST-THECA RELATIONSHIP; SP-NOV DINOPHYCEAE; MARINE DINOFLAGELLATE; SEQUENCE DATA; PHYLOGENY; PERIDINIALES; DIVERSITY; TAXONOMY; PROPOSAL; REVISION
Keywords
Fusiform dinoflagellate; Centrodinium; Alexandrium; morphology; phylogeny
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER GMBH
Related Researcher
Research Interests

Marine bioresource,Marine phytoplankton diversity / ecology,Marine micropaleontology,해양생물자원,해양식물플랑크톤 다양성/생태학,해양미고생물학

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