Dynamic changes in bacterial communities in three species of corals during the 2017 bleaching event in subtropical Hong Kong waters

Ying ZOU, Jack Chi-Ho IP, James Y. XIE, Yip Hung YEUNG, Lu WEI, Zhiqiang GUO, Yanjie ZHANG*, Jian-Wen QIU*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

Abstract

Bacteria play important roles in coral health, yet little is known about the dynamics of coral-associated bacterial communities during coral bleaching. Here, we reported the dynamic changes of bacterial communities in three scleractinian corals (Montipora peltiformis, Pavona decussata and Platygyra carnosa) during and after bleaching through amplicon sequencing. Our results revealed that the bacterial composition and dominant bacteria varied among the three coral species. The higher susceptibility of M. peltiformis to bleaching corresponded to a lower bacterial community diversity, and the dominant Synechococcus shifted in abundance during the bleaching and coral recovery phases. The resilient P. decussata and P. carnosa had higher bacterial diversity and a more similar bacterial composition between the healthy and bleached conditions. Overall, our study reveals the dynamic changes in coral-associated microbial diversity under different conditions, contributing to explaining the differential susceptibility of corals to extreme climate conditions.
Original languageEnglish
Article number116002
JournalMarine Pollution Bulletin
Volume199
Early online date4 Jan 2024
DOIs
Publication statusPublished - 1 Feb 2024

Bibliographical note

Publisher Copyright:
© 2023

Keywords

  • 16S rRNA sequencing
  • Bacterial community
  • Coral bleaching
  • Heatwave
  • High-latitude coral

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