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Antimicrobial and stress responses to increased temperature and bacterial pathogen challenge in the holobiont of a reef-building coral

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dc.contributor Dept Biol Marine
dc.contributor University Of Texas System
dc.contributor Australian Institute Of Marine Science
dc.contributor Aims Jcu
dc.contributor Univ Melbourne
dc.contributor Univ Technol Sydney
dc.contributor Australian Inst Marine Sci
dc.contributor Arc Ctr Excellence Coral Reef Studies
dc.contributor Univ Texas Austin
dc.contributor Climate Change Cluster C3
dc.contributor University Of Technology Sydney
dc.contributor Sect Integrat Biol
dc.contributor University Of Texas Austin
dc.contributor Coll Sci & Engn
dc.contributor Ctr Sci Monaco
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor Sch Biosci
dc.contributor University Of Melbourne BOURNE, DAVID G. VAN DE WATER, JEROEN A. J. M. DE MARES, MARYAM CHAIB DIXON, GROVES B. RAINA, JEAN-BAPTISTE WILLIS, BETTE L. VAN OPPEN, MADELEINE J. H. 2018-04-22T18:16:04Z 2018-04-22T18:16:04Z 2019-05-09T01:15:27Z 2018-04-22T18:16:04Z 2018-04-22T18:16:04Z 2019-05-09T01:15:27Z 2018-02-01
dc.identifier.citation van de Water JAJM, De Mares MC, Dixon GB, Raina JB, Willis BL, Bourne DG, van Oppen MJH (2018) Antimicrobial and stress responses to increased temperature and bacterial pathogen challenge in the holobiont of a reef-building coral. Molecular Ecology 27(4): 1065-1080
dc.identifier.issn 0962-1083
dc.description.abstract Global increases in coral disease prevalence have been linked to ocean warming through changes in coral-associated bacterial communities, pathogen virulence and immune system function. However, the interactive effects of temperature and pathogens on the coral holobiont are poorly understood. Here, we assessed three compartments of the holobiont (host, Symbiodinium and bacterial community) of the coral Montipora aequituberculata challenged with the pathogen Vibrio coralliilyticus and the commensal bacterium Oceanospirillales sp. under ambient (27 degrees C) and elevated (29.5 and 32 degrees C) seawater temperatures. Few visual signs of bleaching and disease development were apparent in any of the treatments, but responses were detected in the holobiont compartments. V.coralliilyticus acted synergistically and negatively impacted the photochemical efficiency of Symbiodinium at 32 degrees C, while Oceanospirillales had no significant effect on photosynthetic efficiency. The coral, however, exhibited a minor response to the bacterial challenges, with the response towards V.coralliilyticus being significantly more pronounced, and involving the prophenoloxidase-activating system and multiple immune system-related genes. Elevated seawater temperatures did not induce shifts in the coral-associated bacterial community, but caused significant gene expression modulation in both Symbiodinium and the coral host. While Symbiodinium exhibited an antiviral response and upregulated stress response genes, M.aequituberculata showed regulation of genes involved in stress and innate immune response processes, including immune and cytokine receptor signalling, the complement system, immune cell activation and phagocytosis, as well as molecular chaperones. These observations show that M.aequituberculata is capable of maintaining a stable bacterial community under elevated seawater temperatures and thereby contributes to preventing disease development.
dc.description.sponsorship Australian Coral Reef Society; Australian Research Council Centre of Excellence for Coral Reef Studies; James Cook University; Australian Institute of Marine Science; AIMS@JCU
dc.language English
dc.subject Immune-system
dc.subject Ecology
dc.subject Vibrio-coralliilyticus
dc.subject Evolutionary Biology
dc.subject Protein-tyrosine-phosphatase
dc.subject Holobiont
dc.subject Symbiosis
dc.subject Oceanospirillales
dc.subject Pocillopora-damicornis
dc.subject Mucus-associated Bacteria
dc.subject Artemia-franciscana
dc.subject Environmental Sciences & Ecology
dc.subject Immune Response
dc.subject Climate Change
dc.subject Environmental-changes
dc.subject Vibrio Coralliilyticus
dc.subject Disease
dc.subject Montipora-digitata
dc.subject Coral
dc.subject Biochemistry & Molecular Biology
dc.subject Scleractinian Coral
dc.subject Symbiodinium
dc.subject Oculina-patagonica
dc.subject Bacteria
dc.title Antimicrobial and stress responses to increased temperature and bacterial pathogen challenge in the holobiont of a reef-building coral
dc.type journal article
dc.identifier.doi 10.1111/mec.14489
dc.identifier.wos WOS:000428797100020

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