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Cross-Sectional Variations in Structure and Function of Coral Reef Microbiome With Local Anthropogenic Impacts on the Kenyan Coast of the Indian Ocean

Wambua, Sammy and Gourlé, Hadrien and de Villiers, Etienne P. and Karlsson-Lindsjö, Oskar E. and Wambiji, Nina and Macdonald, Angus and Bongcam-Rudloff, Erik and de Villiers, Santie (2021). Cross-Sectional Variations in Structure and Function of Coral Reef Microbiome With Local Anthropogenic Impacts on the Kenyan Coast of the Indian Ocean. Frontiers in Microbiology. 12 , 673128
[Research article]

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Abstract

Coral reefs face an increased number of environmental threats from anthropomorphic climate change and pollution from agriculture, industries and sewage. Because environmental changes lead to their compositional and functional shifts, coral reef microbial communities can serve as indicators of ecosystem impacts through development of rapid and inexpensive molecular monitoring tools. Little is known about coral reef microbial communities of the Western Indian Ocean (WIO). We compared taxonomic and functional diversity of microbial communities inhabiting near-coral seawater and sediments from Kenyan reefs exposed to varying impacts of human activities. Over 19,000 species (bacterial, viral and archaeal combined) and 4,500 clusters of orthologous groups of proteins (COGs) were annotated. The coral reefs showed variations in the relative abundances of ecologically significant taxa, especially copiotrophic bacteria and coliphages, corresponding to the magnitude of the neighboring human impacts in the respective sites. Furthermore, the near-coral seawater and sediment metagenomes had an overrepresentation of COGs for functions related to adaptation to diverse environments. Malindi and Mombasa marine parks, the coral reef sites closest to densely populated settlements were significantly enriched with genes for functions suggestive of mitigation of environment perturbations including the capacity to reduce intracellular levels of environmental contaminants and repair of DNA damage. Our study is the first metagenomic assessment of WIO coral reef microbial diversity which provides a much-needed baseline for the region, and points to a potential area for future research toward establishing indicators of environmental perturbations.

Authors/Creators:Wambua, Sammy and Gourlé, Hadrien and de Villiers, Etienne P. and Karlsson-Lindsjö, Oskar E. and Wambiji, Nina and Macdonald, Angus and Bongcam-Rudloff, Erik and de Villiers, Santie
Title:Cross-Sectional Variations in Structure and Function of Coral Reef Microbiome With Local Anthropogenic Impacts on the Kenyan Coast of the Indian Ocean
Series Name/Journal:Frontiers in Microbiology
Year of publishing :2021
Volume:12
Article number:673128
Number of Pages:16
Publisher:FRONTIERS MEDIA SA
ISSN:1664-302X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
Keywords:coral reef microbiota, microbiome, COGs, human impacts, environmental stressors
URN:NBN:urn:nbn:se:slu:epsilon-p-113111
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113111
Additional ID:
Type of IDID
DOI10.3389/fmicb.2021.673128
Web of Science (WoS)000670057700001
ID Code:25066
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Breeding and Genetics
Deposited By: SLUpub Connector
Deposited On:26 Aug 2021 17:25
Metadata Last Modified:27 Aug 2021 05:01

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