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    Identification of a bacterial pathogen associated with Porites white patch syndrome in the Western Indian Ocean

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    Authors
    Séré, Mathieu G.
    Chabanet, Pascale
    Quod, Jean-Pascal
    Sweet, Michael J. cc
    Tortosa, Pablo cc
    Schleyer, Michael cc
    Affiliation
    University of Derby
    Issue Date
    2015-08-24
    
    Metadata
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    Abstract
    Porites white patch syndrome (PWPS) is a coral disease recently described in the Western Indian Ocean. This study aimed to isolate and identify potential pathogens associated with PWPS utilizing both culture and nonculture screening techniques and inoculation trials. A total of 14 bacterial strains (those dominant in disease lesions, absent or rare in healthy tissues and considered potential pathogens in a previous study) were cultured and used to experimentally inoculate otherwise healthy individuals in an attempt to fulfil Henle–Koch's postulates. However, only one (P180R), identified as closely related (99–100% sequence identity based on 1.4 kb 16S RNA sequence) to Vibrio tubiashii, elicited signs of disease in tank experiments. Following experimental infection (which resulted in a 90% infection rate), the pathogen was also successfully re-isolated from the diseased tissues and re-inoculated in healthy corals colonies, therefore fulfilling the final stages of Henle–Koch's postulates. Finally, we report that PWPS appears to be a temperature-dependent disease, with significantly higher tissue loss (anova: d.f. = 2, F = 39.77, P < 0.01) occurring at 30 °C [1.45 ± 0.85 cm2 per day (mean ± SE)] compared to ambient temperatures of 28 and 26 °C (0.73 ± 0.80 cm2 per day (mean ± SE) and 0.51 ± 0.50 cm2 per day (mean ± SE), respectively).
    Citation
    Sere, M, Tortosa, P, Chabanet, P, Quod, J, Sweet, M, & Schleyer, M 2015, 'Identification of a bacterial pathogen associated with Porites white patch syndrome in the Western Indian Ocean', Molecular Ecology, 17, p. 4570
    Publisher
    Wiley
    Journal
    Molecular Ecology
    URI
    http://hdl.handle.net/10545/583331
    DOI
    10.1111/mec.13326
    Additional Links
    http://doi.wiley.com/10.1111/mec.13326
    Type
    Article
    Language
    en
    Series/Report no.
    Vol. 24
    Issue 17
    ISSN
    09621083
    ae974a485f413a2113503eed53cd6c53
    10.1111/mec.13326
    Scopus Count
    Collections
    Environmental Sustainability Research Centre

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