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The community stability of Symbiodiniaceae and bacteria of different morphological corals and linkages to coral susceptibility to anthropogenic disturbance

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Abstract

Variously shaped corals, such as branching and massive corals, exhibit divergent environmental susceptibility properties. The susceptibility potential of these corals may be regulated by specific symbiotic Symbiodiniaceae and bacteria. In this study, we investigated seawater characteristics between the north and south zones at the Wuzhizhou Island (WZZ), sampled branching coral Acropora hyacinthus, lamellar coral Montipora informis, and massive coral (Galaxea fascicularis and Porites lutea). Physiological characteristics were measured, and amplicon sequencing was performed to Symbiodiniaceae and bacterial community structure analysis. Corals experienced severe anthropogenic disturbance, with more than 1.4-fold increase in DIN, including \({{\text{NH}}}_{4}^{+}\), \({{\text{NO}}}_{3}^{-}\), and \({{\text{NO}}}_{2}^{-}\) in the north of the WZZ Island compared to the southern region. However, massive corals (G. fascicularis and P. lutea) showed relatively less disruption in both their symbiont composition and physiological responses. Notably, M. informis displayed distinct variations, with disturbances in the northern region resulted in a decline in the density of symbiotic micro-algae associated with Cladocopium sp. C26 due to elevated concentrations of ammonium and nitrate. The four coral species hosted different symbionts within the same area. P. lutea hosted Cladocopium sp. C15 with the lowest density of symbiotic micro-algae, along with the lowest Fv/Fm and YII values compared to other corals in the southern zone. G. fascicularis exhibited high abundance of Durusdinium sp. D1 and D4, which showed strong correlation with Fv/Fm. In southern M. informis, Cladocopium sp. C26 was identified as the predominant symbiotic micro-algae that displayed a significant positive correlation with YII. The bacterial community composition and metabolism functional attribution predicted by PICRUSt differed between A. hyacinthus, M. informis, and massive corals (G. fascicularis, P. lutea). Comprehensive analysis revealed different susceptibility properties among branching, lamellar, and massive corals under anthropogenic disturbance associated with changes in Symbiodiniaceae and bacterial community.

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Data availability

The raw sequence data reported in this paper have been deposited in the Genome Sequence Archive (Genomics, Proteomics & Bioinformatics 2021) (Chen et al. 2021) in National Genomics Data Center (Nucleic Acids Res 2022) (Members and Partners 2022), China National Center for Bioinformation / Beijing Institute of Genomics, Chinese Academy of Sciences (CRA009587, CRA009588) that are publicly accessible at https://ngdc.cncb.ac.cn/gsa.

Abbreviations

ASV:

Amplicon sequence variant

DIN:

Dissolved inorganic nitrogen

KO:

KEGG ortholog

NMDS:

Non-metric multidimensional scaling

OTU:

Operational taxonomic unit

PcoA:

Principal coordinates analysis

WZZ:

Wuzhizhou

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Acknowledgements

The authors were grateful for constructive suggestions and technical support from the instructors and all the laboratory members.

Funding

This work was financially supported by the National Natural Science Foundation of China (42206108, 42161144006 or 3511/21) and the Natural Science Foundation of Hainan Province (2021RC169, 423QN210).

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Authors

Contributions

RWC and XL designed this study. ZL, XBL, and JH acquired the data. RWC, WZ, and YL performed the analyses and drew graphs. RWC drafted the manuscript. AW took part in supervision and funding acquisition. XL framed the research, supervision, and funding acquisition. All author reviewed the manuscript and made suggestions.

Corresponding author

Correspondence to Xiubao Li.

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The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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Supplementary Information

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338_2024_2475_MOESM1_ESM.eps

Fig. S1 Location of the study site at the WZZ Island. The sampling sites of the north side are the area of intensive tourism activities (N1–N5), and the south side is the area far from the influence of tourism activities (S1–S5)

Supplementary file1 (EPS 10340 KB)

Fig. S2. Bacterial metabolic enrichment in the KEGG function was predicted by PICRUSt

Supplementary file2 (EPS 3378 KB)

Supplementary file3 (DOCX 53 KB)

Supplementary file4 (XLSX 61 KB)

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Chen, RW., Li, Z., Huang, J. et al. The community stability of Symbiodiniaceae and bacteria of different morphological corals and linkages to coral susceptibility to anthropogenic disturbance. Coral Reefs 43, 467–481 (2024). https://doi.org/10.1007/s00338-024-02475-y

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