Energy depletion and opportunistic microbial colonisation in white syndrome lesions from corals across the Indo-Pacific
Author | Smith, Hillary A. |
Author | Conlan, Jessica A. |
Author | Pollock, F. Joseph |
Author | Wada, Naohisa |
Author | Shore, Amanda |
Author | Hung, Julia Yun-Hsuan |
Author | Aeby, Greta S. |
Author | Willis, Bette L. |
Author | Francis, David S. |
Author | Bourne, David G. |
Available date | 2023-02-28T06:59:00Z |
Publication Date | 2020 |
Publication Name | Scientific Reports |
Resource | Scopus |
Abstract | Corals are dependent upon lipids as energy reserves to mount a metabolic response to biotic and abiotic challenges. This study profiled lipids, fatty acids, and microbial communities of healthy and white syndrome (WS) diseased colonies of Acropora hyacinthus sampled from reefs in Western Australia, the Great Barrier Reef, and Palmyra Atoll. Total lipid levels varied significantly among locations, though a consistent stepwise decrease from healthy tissues from healthy colonies (HH) to healthy tissue on WS-diseased colonies (HD; i.e. preceding the lesion boundary) to diseased tissue on diseased colonies (DD; i.e. lesion front) was observed, demonstrating a reduction in energy reserves. Lipids in HH tissues were comprised of high energy lipid classes, while HD and DD tissues contained greater proportions of structural lipids. Bacterial profiling through 16S rRNA gene sequencing and histology showed no bacterial taxa linked to WS causation. However, the relative abundance of Rhodobacteraceae-affiliated sequences increased in DD tissues, suggesting opportunistic proliferation of these taxa. While the cause of WS remains inconclusive, this study demonstrates that the lipid profiles of HD tissues was more similar to DD tissues than to HH tissues, reflecting a colony-wide systemic effect and provides insight into the metabolic immune response of WS-infected Indo-Pacific corals. |
Sponsor | This project was funded in part by Earthwatch Institute and Mitsubishi Corporation. |
Language | en |
Publisher | Nature Research |
Subject | cell proliferation Rhodobacteraceae microbiology |
Type | Article |
Issue Number | 1 |
Volume Number | 10 |
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Biological & Environmental Sciences [920 items ]