First record of a raphid diatom species Plagiolemma distortum Nezan (Naviculales, Bacillariophyceae) from the East China Sea and Korean coastal areas

Title
First record of a raphid diatom species Plagiolemma distortum Nezan (Naviculales, Bacillariophyceae) from the East China Sea and Korean coastal areas
Author(s)
Li Zhun; 신현호; 윤주연
KIOST Author(s)
Shin, Hyeon Ho(신현호)Youn, Joo Yeon(윤주연)
Publication Year
2019-05-15
Abstract
A new recorded diatom, Plagiolemma distortum was isolated from plankton samples from the East China Sea and Korean coastal areas. The species was characterized by light and scanning electron microscopy of laboratory cultures, as well as small subu nit (SSU) rDNA gene and chloroplast - encoded rbcL gene sequences . Cells have an unusual and complex shape, single or in pairs, contain some yellow- brown plastids and a variable number of refractive granules. In addition, a novel capsule stage containing motile cell was observed. The valves
are strongly vaulted, with undulating margins. The girdle is plain, and the raphe is strongly sigmoid. Molecular phylogenetic analyses of multigene sequences (SSU+rbcL) revealed that the sequences of Plagiolemma distortum formed an indiependent clade nested within the Plagiotropi daceae. Phylogenetic analysis based on SSU rDNA gene sequences indicated that the clade of Plagiolemma distortum was most closely related to Plagiotropis species, and the Plagiotropidaceae clade was sister to the Pleurosigmataceae clade.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22706
Bibliographic Citation
2019년도 한국해양과학기술협의회 공동학술대회, 2019
Publisher
한국해양과학기술협의회
Type
Conference
Language
English
Publisher
한국해양과학기술협의회
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