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Microbial community metabolism of coral reef exometabolomes broadens the chemodiversity of labile dissolved organic matter
Quinlan, Z.A.; Nelson, C.E.; Koester, I.; Petras, D.; Nothias, L.-F.; Comstock, J.; White, B.M.; Aluwihare, L.I.; Bailey, B.A.; Carlson, C.A.; Dorrestein, P.C.; Haas, A.F.; Wegley Kelly, L. (2025). Microbial community metabolism of coral reef exometabolomes broadens the chemodiversity of labile dissolved organic matter. Environ. Microbiol. 27(3): e70064. https://dx.doi.org/10.1111/1462-2920.70064
In: Environmental Microbiology. Blackwell Scientific Publishers: Oxford. ISSN 1462-2912; e-ISSN 1462-2920, meer
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| Author keywords |
coral reefs; dissolved organic matter; exometabolome; marine microbes; molecular networking; tandem mass spectrometry |
| Auteurs | | Top |
- Quinlan, Z.A.
- Nelson, C.E.
- Koester, I.
- Petras, D.
- Nothias, L.-F.
|
- Comstock, J.
- White, B.M.
- Aluwihare, L.I.
- Bailey, B.A.
|
- Carlson, C.A.
- Dorrestein, P.C.
- Haas, A.F., meer
- Wegley Kelly, L.
|
| Abstract |
Dissolved organic matter (DOM) comprises diverse compounds with variable bioavailability across aquatic ecosystems. The sources and quantities of DOM can influence microbial growth and community structure with effects on biogeochemical processes. To investigate the chemodiversity of labile DOM in tropical reef waters, we tracked microbial utilisation of over 3000 untargeted mass spectrometry ion features exuded from two coral and three algal species. Roughly half of these features clustered into over 500 biologically labile spectral subnetworks annotated to diverse structural superclasses, including benzenoids, lipids, organic acids, heterocyclics and phenylpropanoids, comprising on average one-third of the ion richness and abundance within each chemical class. Distinct subsets of these labile compounds were exuded by algae and corals during the day and night, driving differential microbial growth and substrate utilisation. This study expands the chemical diversity of labile marine DOM with implications for carbon cycling in coastal environments. |
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