Characterization of coral-associated microbial aggregates (CAMAs) within tissues of the coral Acropora hyacinthus

Wada, Naohisa, Ishimochi, Mizuki, Matsui, Taeko, Pollock, F. Joseph, Tang, Sen-Lin, Ainsworth, Tracy D., Willis, Bette L., Mano, Nobuhiro, and Bourne, David G. (2019) Characterization of coral-associated microbial aggregates (CAMAs) within tissues of the coral Acropora hyacinthus. Scientific Reports, 9. 14662.

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Abstract

Bacterial diversity associated with corals has been studied extensively, however, localization of bacterial associations within the holobiont is still poorly resolved. Here we provide novel insight into the localization of coral-associated microbial aggregates (CAMAs) within tissues of the coral Acropora hyacinthus. In total, 318 and 308 CAMAs were characterized via histological and fluorescent in situ hybridization (FISH) approaches respectively, and shown to be distributed extensively throughout coral tissues collected from five sites in Japan and Australia. The densities of CAMAs within the tissues were negatively correlated with the distance from the coastline (i.e. lowest densities at offshore sites). CAMAs were randomly distributed across the six coral tissue regions investigated. Within each CAMA, bacterial cells had similar morphological characteristics, but bacterial morphologies varied among CAMAs, with at least five distinct types identified. Identifying the location of microorganisms associated with the coral host is a prerequisite for understanding their contributions to fitness. Localization of tissue-specific communities housed within CAMAs is particularly important, as these communities are potentially important contributors to vital metabolic functions of the holobiont.

Item ID: 60885
Item Type: Article (Research - C1)
ISSN: 2045-2322
Copyright Information: © The Author(s) 2019.
Date Deposited: 06 Nov 2019 08:03
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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