Closely related bacterial community during and after the marine Akashiwo sanguinea(Dinophyta) blooms for in-door microcosm evidences

Title
Closely related bacterial community during and after the marine Akashiwo sanguinea(Dinophyta) blooms for in-door microcosm evidences
Author(s)
Jung, Seung Won; Kang, Junsu
KIOST Author(s)
Jung, Seung Won(정승원)Kang, Junsu(강준수)
Publication Year
2020-07-23
Abstract
We investigated dynamics of the bacterial composition and metabolic function in Akashiwo sanguinea bloom using the 100-L indoor microcosm and metagenomic next-generation sequencing. We found that the bacterial community was classified into three groups at 54% similarity. Group I was associated with “during A. sanguinea bloom stage” and mainly consisted of Alphaproteobacteria(48.51%), Flavobacteriia(47.32%), and Gammaproteobacteria(3.43%). Meanwhile, groups II and III were associated with “late bloom/decline stage to post-bloom stage”. Flavobacteriia and Gammaproteobacteria decreased in Group II but increased again to 41.05% and 5.85% in Group III, respectively. With the termination of A. sanguinea bloom, the concentrations of inorganic nutrients, particularly PO43-, NH4+ and dissolved organic carbon, increased rapidly and then decreased. From the network analysis, we found that A. sanguinea node is associated with certain bacteria, and after the bloom, the specific increases in NH4+ and PO43- nodes are associated with other bacterial taxa. The changes in the functional groups of bacteria community from chemoheterotrophy to nitrogen association metabolisms were consistent with environmental impacts during and after A. sanguinea bloom. Consequently, certain bacteria taxa and the environments dynamically changed during and after HABs bloom and a rapid turnover in the bacterial community and their function can respond to ecological interactions.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32915
Bibliographic Citation
2020년도 한국해양과학기술협의회 공동학술대회 (한국해양학회), 2020
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
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