Nutrient availability and metabolism Affect the stability of coral–Symbiodiniaceae symbioses

Morris, Luke A., Voolstra, Christian R., Quigley, Kate M., Bourne, David G., and Bay, Line K. (2019) Nutrient availability and metabolism Affect the stability of coral–Symbiodiniaceae symbioses. Trends in Microbiology, 27 (8). pp. 678-689.

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Abstract

Coral reefs rely upon the highly optimized coral–Symbiodiniaceae symbiosis, making them sensitive to environmental change and susceptible to anthropogenic stress. Coral bleaching is predominantly attributed to photo-oxidative stress, yet nutrient availability and metabolism underpin the stability of symbioses. Recent studies link symbiont proliferation under nutrient enrichment to bleaching; however, the interactions between nutrients and symbiotic stability are nuanced. Here, we demonstrate how bleaching is regulated by the forms and ratios of available nutrients and their impacts on autotrophic carbon metabolism, rather than algal symbiont growth. By extension, historical nutrient conditions mediate host–symbiont compatibility and bleaching tolerance over proximate and evolutionary timescales. Renewed investigations into the coral nutrient metabolism will be required to truly elucidate the cellular mechanisms leading to coral bleaching.

Item ID: 58869
Item Type: Article (Research - C1)
ISSN: 1878-4380
Keywords: coral bleaching, symbiosis, nutrient availability, Symbiodiniaceae, ocean warming, nutrient metabolism
Copyright Information: © 2019 The Authors. Open access under a Creative Commons (CC-by-NC-ND 4.0) license.
Funders: National Environmental Science Program (NESP) Tropical Water Quality (TWQ) Hub, Australian Institute of Marine Science
Projects and Grants: NESP TWQ Project 3.3.1
Date Deposited: 09 Jul 2019 05:02
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060203 Ecological Physiology @ 50%
06 BIOLOGICAL SCIENCES > 0605 Microbiology > 060504 Microbial Ecology @ 50%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 100%
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