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Coral symbiotic bacterial community and metabolites changes under thermal stress: A case of laboratory experiment with heating treatment

ABSTRACT: Coral bleaching and coral reef degradation become severe as the surface seawater temperature rises. Much research to date has focused on the bacterial community composition properties within the coral holobiont, but less attention has been paid to the interactions of bacteria and corals under thermal stress. We investigated the changes of coral symbiotic bacteria and metabolites under thermal stress, and analyzed the internal relationship between bacteria and metabolites as well as their relationship with coral health. We found obvious signs of coral bleaching after heating treatment, and the interaction within symbiotic bacterial community became closer. The coral symbiotic bacterial community and metabolites changed significantly under thermal stress, and bacteria such as Flavobacterium, Shewanella and Psychrobacter increased significantly. Bacteria associated with stress tolerance, biofilm formation and mobile elements decreased, and bacterial DMSP metabolism increased slightly after heating treatment. Differential metabolites in corals after heating treatment were associated with cell cycle regulation and antioxidant. This study revealed the correlation between differential metabolites and bacterial community composition changes in corals under thermal stress, and providing valuable insight on metabolomics research of corals.

INSTRUMENT(S): Liquid Chromatography MS - negative - reverse phase, Liquid Chromatography MS - positive - reverse phase

SUBMITTER: Hao Sun

PROVIDER: MTBLS5272 | MetaboLights | 2022-10-27

REPOSITORIES: MetaboLights

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