Short and intensive microbial dynamics during Akashiwo sanguinea (Dinophyta) blooms

Title
Short and intensive microbial dynamics during Akashiwo sanguinea (Dinophyta) blooms
Author(s)
정승원; 강준수; 김현정
KIOST Author(s)
Jung, Seung Won(정승원)Kang, Junsu(강준수)Kim, Hyun Jung(김현정)
Publication Year
2019-10-31
Abstract
To understand micro-ecosystem changes during harmful algal blooms (HABs), we examined the variability of micro-environments and microbiome (virus to plankton) through short and intensive investigation during Akashiwo sanguinea blooms in Jangmok coastal waters of South Korea by metagenomics. The exudation of extracellular polymeric substances (EPS) by A. sanguinea markedly changed bio-geochemical cycles (in particular phosphorus and carbon sources). In A. sanguinea-associatedbacteria communities, Rickettsia rhipicephali and Polaribacter marinivivus positively affect the HABs, while Amylibacter ulvae, Mesonia algae, and Luminiphilus syltensis negatively affect the HABs. An endoparasitic Amoebophrya sp., may importantly control bloom dynamics, as increase in their abundance lagged the HABs decline. In the dsDNA viruses, Pandoraviridae increased following increases in the HABs peaks, but Phycodnaviridae might not infect A. sanguinea. Thus, A. sanguinea blooms dramatically change the micro-ecosystem through their efficient autotrophic processes and exudation of EPS, followed by changes in the microbiome involving species-specific viruses, bacteria, and parasitoids.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22076
Bibliographic Citation
2019년도 한국해양학회 추계학술대회, pp.33, 2019
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Phytoplatnkon taxonomy,Phytoplatnkon physiology,Phycosphere,식물플랑크톤 분류,식물플랑크톤 생리,식물플랑크톤, 바이러스, 박테리아 관계

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