Morphology and phylogeny of calcareous cyst-producing dinoflagellate Scrippsiella precaria Montresor & Zingone {Thoracosphaeraceae} from Korean coastal area

Title
Morphology and phylogeny of calcareous cyst-producing dinoflagellate Scrippsiella precaria Montresor & Zingone {Thoracosphaeraceae} from Korean coastal area
Author(s)
김현정; Li Zhun; 윤주연; 곽경윤; 신현호
KIOST Author(s)
Youn, Joo Yeon(윤주연)Kwak, Kyeong Yoon(곽경윤)Shin, Hyeon Ho(신현호)
Alternative Author(s)
김현정; 윤주연; 곽경윤; 신현호
Publication Year
2019-10-18
Abstract
Scrippsiella precaria was isolated from the Jinhae Bay, Korea. The monadoid cells were usually solitary and rarely in pairs, oval in shape, slightly dorso-ventrally compressed, 20.4-28.5 μm in length and 18.1-24.4 μm in width. The epitheca was conical and rounded apex, and the hypotheca was somewhat trapezoidal or some hemisphere. The nucleus was spherical to oval and located in the central part of the cell. Scanning electron microscope observation revealed that the monadoid cells have a Kofoidian plate formula of Po, X, 4', 3a, 7", 6C, 5S, 5"', 2"", and that many small pores are distributed on the thecal surface. Plates la and 3a were hexagonal shape however, plate 2a was rhombic shape and especially small size. Coccoid cells were spherical to oval in shape, yellow-green in color with a red accumulation body, and were covered with polygonal calcareous spines. Molecular phylogenetic analysis based on internal transcribed spacer and5.8s rDNA showed that S. precaria is nested within Scrippsiella sensu lato clade and closely related to S. irregularis and S. ramonii.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22238
Bibliographic Citation
한국환경생물학회, 2019
Publisher
한국환경생물학회
Type
Conference
Language
English
Publisher
한국환경생물학회
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