Effects of different nutrient and trace metal concentrations on growth of the toxic dinoflagellate Gymnodinium catenatum isolated from Korean coastal waters

Title
Effects of different nutrient and trace metal concentrations on growth of the toxic dinoflagellate Gymnodinium catenatum isolated from Korean coastal waters
Author(s)
한경하; 김현정; 이준; 윤주연; 곽경윤; 서민호; 황진익; 오석진; 박종우; 임월애; 신현호
KIOST Author(s)
Han, Kyongha(한경하)Kim, Hyunjung(김현정)Youn, Joo Yeon(윤주연)Kwak, Kyeong Yoon(곽경윤)Shin, Hyeon Ho(신현호)
Publication Year
2020-07-10
Abstract
The effects of nutrient (nitrate: N, phosphate: P and vitamin B1) and trace metal (iron: Fe, Copper: Cu, and selenium: Se) additions on the growth of Gymnodinium catenatum, which was isolated from Korean coastal waters, were investigated. The Korean isolate of G. catenatum could grow in a wide range of N and P. The high concentrations of N (> N:P ratio of 23.5) did not stimulate the growth rate however the enhancements in the growth rate and cell density were observed with P additions. Vitamin B1 addition experiments revealed that G. catenatum does not require the vitamin B1 for the growth. In Fe and Cu addition experiments, no significant differences were observed in the growth patterns and rates of G. catenatum between controls and all treatments. It is possible that the growth of Korean isolate of G. catenatum is not dependent on high concentration of Fe and Cu. However, the cell densities were increased in the stationary phases of treatments with additions of Se, and the maximum cell densities were higher than those in culture experiments with additions of other nutrient and trace metal sources. Our findings indicate that G. catenatum prefers high concentrations of P and Se for the proliferation, rather than other nutritional sources.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/33136
Bibliographic Citation
2020 한국환경생물학회 춘계학술대회, 2020
Publisher
한국환경생물학회
Type
Conference
Language
English
Publisher
한국환경생물학회
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