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Corals and sponges are hotspots of reactive oxygen species in the deep sea.

ABSTRACT: Reactive oxygen species (ROS) are central to diverse biological processes through which organisms respond to and interact with their surroundings. Yet, a lack of direct measurements limits our understanding of the distribution of ROS in the ocean. Using a recently developed in situ sensor, we show that deep-sea corals and sponges produce the ROS superoxide, revealing that benthic organisms can be sources and hotspots of ROS production in these environments. These findings confirm previous contentions that extracellular superoxide production by corals can be independent of the activity of photosynthetic symbionts. The discovery of deep-sea corals and sponges as sources of ROS has implications for the physiology and ecology of benthic organisms and introduces a previously overlooked suite of redox reactants at depth.

SUBMITTER: Taenzer L

PROVIDER: S-EPMC10682969 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Corals and sponges are hotspots of reactive oxygen species in the deep sea.

Taenzer Lina L Wankel Scott D SD Kapit Jason J Pardis William A WA Herrera Santiago S Auscavitch Steven S Grabb Kalina C KC Cordes Erik E Hansel Colleen M CM

PNAS nexus 20231115 11

Reactive oxygen species (ROS) are central to diverse biological processes through which organisms respond to and interact with their surroundings. Yet, a lack of direct measurements limits our understanding of the distribution of ROS in the ocean. Using a recently developed in situ sensor, we show that deep-sea corals and sponges produce the ROS superoxide, revealing that benthic organisms can be sources and hotspots of ROS production in these environments. These findings confirm previous conten ...[more]

PMID: 38034097

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