• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Characterization of pink pigmented lesions and its associated inflammatory-like responses that influence resilience in a scleractinian coral

    Thumbnail
    Date
    2026
    Author
    Lawrance I.
    Ravindran, C.
    Metadata
    Show full item record
    Abstract
    The reef-building Scleractinian coral Porites lutea is widely affected by abnormal pink inflammations including Pink line syndrome (PLS) and Pink spot (PS). However, the immune responses of these non-normal pink pigmented tissue lesions in P. lutea are poorly understood. This study aimed to investigate the histopathological changes, innate immune responses, and microbial community shifts associated with pink-pigmented lesions in P. lutea in order to better understand disease severity and recovery. Healthy and pigmented tissues were analyzed using comparative histopathology, microscopy, enzymatic assays, protease profiling, and genome-level screening of microbial communities and functional response genes. Histopathology revealed fragmentation, degradation, and disintegration of the polyp gastrodermal architecture and mesoglea in pigmented tissues. Bacterial colonizers occurred in both healthy and pigmented tissues, whereas ciliates were detected only in the lesions. Pigmented tissues also showed reduced numbers and surface area of symbiotic algae, ova, and mesenterial filaments, indicating compromised survival and fecundity. Increased melanin deposition and mucus secretion, together with elevated phenol oxidase, peroxidase, superoxide dismutase, catalase, and protease activities, indicated strong innate immune and oxidative stress responses in inflamed tissues. Genome-level screening further revealed shifts in microbial communities and stress-related functions between healthy and pigmented tissues. These findings show that pink inflammatory lesions in P. lutea are associated with major tissue damage, immune activation, and microbial reorganization, and provide insight into the resilience of this massive coral under biotic and abiotic stress.
    URI
    https://www.sciencedirect.com/science/article/pii/S0022201126001059
    http://drs.nio.res.in/drs/handle/2264/9653
    Collections
    • Scholarly literature [9297]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV