거제도 장목항에서 적조원인생물 Akashiwo sanguinea (Dinophyceae): 형태, 분자계통학적 특성 및 온도와 염분에 따른 성장 특성 KCI

Title
거제도 장목항에서 적조원인생물 Akashiwo sanguinea (Dinophyceae): 형태, 분자계통학적 특성 및 온도와 염분에 따른 성장 특성
Alternative Title
Bloom-forming dinoflagellate Akashiwo sanguinea (Dinophyceae) in Jangmok Harbour of Geoje Island, Korea: Morphology, phylogeny and effects of temperature and salinity on growth
Author(s)
한경하; Zhun Li; 윤주연; 강병준; 김현정; 서민호; 서호영; 신현호
KIOST Author(s)
Han, Kyongha(한경하)Youn, Joo Yeon(윤주연)Kim, Hyunjung(김현정)Shin, Hyeon Ho(신현호)
Publication Year
2019-06
Abstract
The morphological characteristics of the bloom-forming dinoflagellate Akashiwo sanguinea isolated from Jangmok Harbour, Geoje in Korea was examined using light and scanning electron microscope (SEM), and its large subunit (LSU) rDNA was sequenced. Additionally, investigation was done on the effects of temperature and salinity on the growth of A. sanguinea. The cells were dorso-ventrally compressed up to 54.7-70.3 μm long and 31.5-48.5 μm wide. The epicone was conical while the hypocone was separated into two lobes. The nucleus was positioned at the center of the cell. The yellow-brown chloroplasts radiated close to the cell center. SEM observation indicated that A. sanguinea has an e-shaped apical groove. Molecular phylogeny based on LSU rDNA gene sequences revealed that the A. sanguinea strains isolated from Jangmok Harbor were classified in the clade of ribotype A. The maximum growth rate (0.50 day-1) was observed at 20°C and 20 psu, while the maximum cell density (1,372 cells mL-1) was observed at 25°C and 30 psu. This indicates that the blooms of A. sanguinea ribotype A in Korean coastal area are affected by water temperature, rather than the salinity.
ISSN
1226-9999
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/623
DOI
10.11626/KJEB.2019.37.2.119
Bibliographic Citation
환경생물, v.37, no.2, pp.119 - 128, 2019
Publisher
한국환경생물학회
Keywords
apical groove; cell density; growth rate; LSU rDNA; ribotype; SEM
Type
Article
Language
Korean
Publisher
한국환경생물학회
Related Researcher
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse