Abstract
Understanding how microbial communities are structured in coral holobionts is important to estimate local and global impacts and provide efficient environment management strategies. Several studies investigated the relationship between corals and their microbial communities, including the environmental drivers of shifts in this relationship, associated with diseases and coral cover loss. However, these studies are often geographically or taxonomically restricted and usually focused on the most abundant microbial groups, neglecting the rare biosphere, including archaea in the group DPANN and the recently discovered bacterial members of the candidate phyla radiation (CPR). Although it is known that rare microbes can play essential roles in several environments, we still lack understanding about which taxa comprise the rare biosphere of corals’ microbiome. Here, we investigated the host-related and technical factors influencing coral microbial community structure and the importance of CPR and DPANN in this context by analyzing more than a hundred coral metagenomes from independent studies worldwide. We show that coral genera are the main biotic factor shaping coral microbial communities. We also detected several CPR and DPANN phyla comprising corals’ rare biosphere for the first time and showed that they significantly contribute to shaping coral microbial communities.
Code Availability
The bioinformatic pipeline and statistical analysis are available at http://www.github.com/meirelleslab/CPR_DPANN_coral_holobiont.
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Acknowledgements
This work was primarily supported by the PROPESQ-UFBA (11268). ABC was supported by the National Council for Scientific and Technological Development (CNPq-132261/2018-9). ATS thanks Coordination of Superior Level Staff Improvement (CAPES-88887.301758/2018-00). PMM thanks Serrapilheira Institute (grant number Serra-1709-17818). Authors thank MCTIC/FINEP/CT-Infra 01/2013 project 0761/13 for the computational infrastructure. We acknowledge the National Laboratory for Scientific Computing (LNCC/MCTI, Brazil) for providing HPC resources of the SDumont supercomputer, which have contributed to the research results reported within this article (URL: http://sdumont.lncc.br). Authors thank anonymous reviewers for comments on the manuscript.
Funding
This work was primarily supported by the PROPESQ-UFBA (11268). ABC was supported by CNPq (132261/2018-9). ATS thanks CAPES (88887.301758/2018-00). PMM thanks Serrapilheira Institute (grant number Serra-1709-17818).
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ABC wrote the manuscript. LCC performed the data collection and the bioinformatic analysis. AAR and AA performed the statistical analysis. ABC, LCC, ATS, ML, and PMM interpreted the results. PMM conceived the idea and supervised the work. All authors revised the paper and agreed with its content.
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Campos, A.B., Cavalcante, L.C., de Azevedo, A.R. et al. CPR and DPANN Have an Overlooked Role in Corals’ Microbial Community Structure. Microb Ecol 83, 252–255 (2022). https://doi.org/10.1007/s00248-021-01737-4
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DOI: https://doi.org/10.1007/s00248-021-01737-4