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Open AccessArticle

Unraveling Heterogeneity of Coral Microbiome Assemblages in Tropical and Subtropical Corals in the South China Sea

1
Key Laboratory of Tropical Marine Bio-resources and Ecology & Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
3
Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(4), 604; https://doi.org/10.3390/microorganisms8040604
Received: 16 March 2020 / Revised: 13 April 2020 / Accepted: 17 April 2020 / Published: 21 April 2020
(This article belongs to the Section Environmental Microbiology)
Understanding the coral microbiome is critical for predicting the fidelity of coral symbiosis with growing surface seawater temperature (SST). However, how the coral microbiome will respond to increasing SST is still understudied. Here, we compared the coral microbiome assemblages among 73 samples across six typical South China Sea coral species in two thermal regimes. The results revealed that the composition of microbiome varied across both coral species and thermal regimes, except for Porites lutea. The tropical coral microbiome displayed stronger heterogeneity and had a more un-compacted ecological network than subtropical coral microbiome. The coral microbiome was more strongly determined by environmental factors than host specificity. γ- (32%) and α-proteobacteria (19%), Bacteroidetes (14%), Firmicutes (14%), Actinobacteria (6%) and Cyanobacteria (2%) dominated the coral microbiome. Additionally, bacteria inferred to play potential roles in host nutrients metabolism, several keystone bacteria detected in human and plant rhizospheric microbiome were retrieved in explored corals. This study not only disentangles how different host taxa and microbiome interact and how such an interaction is affected by thermal regimes, but also identifies previously unrecognized keystone bacteria in corals, and also infers the community structure of coral microbiome will be changed from a compacted to an un-compacted network under elevated SST. View Full-Text
Keywords: coral; microbiome; holobiont; thermal regimes; South China Sea coral; microbiome; holobiont; thermal regimes; South China Sea
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MDPI and ACS Style

Gong, S.; Jin, X.; Ren, L.; Tan, Y.; Xia, X. Unraveling Heterogeneity of Coral Microbiome Assemblages in Tropical and Subtropical Corals in the South China Sea. Microorganisms 2020, 8, 604. https://doi.org/10.3390/microorganisms8040604

AMA Style

Gong S, Jin X, Ren L, Tan Y, Xia X. Unraveling Heterogeneity of Coral Microbiome Assemblages in Tropical and Subtropical Corals in the South China Sea. Microorganisms. 2020; 8(4):604. https://doi.org/10.3390/microorganisms8040604

Chicago/Turabian Style

Gong, Sanqiang; Jin, Xuejie; Ren, Lijuan; Tan, Yehui; Xia, Xiaomin. 2020. "Unraveling Heterogeneity of Coral Microbiome Assemblages in Tropical and Subtropical Corals in the South China Sea" Microorganisms 8, no. 4: 604. https://doi.org/10.3390/microorganisms8040604

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