Dataset Information

Microbial Processing of Jellyfish Detritus in the Ocean.

ABSTRACT: When jellyfish blooms decay, sinking jellyfish detrital organic matter (jelly-OM), rich in proteins and characterized by a low C:N ratio, becomes a significant source of OM for marine microorganisms. Yet, the key players and the process of microbial jelly-OM degradation and the consequences for marine ecosystems remain unclear. We simulated the scenario potentially experienced by the coastal pelagic microbiome after the decay of a bloom of the cosmopolitan Aurelia aurita s.l. We show that about half of the jelly-OM is instantly available as dissolved organic matter and thus, exclusively and readily accessible to microbes. During a typical decay of an A. aurita bloom in the northern Adriatic Sea about 100 mg of jelly-OM L-1 becomes available, about 44 ?mol L-1 as dissolved organic carbon (DOC), 13 ?mol L-1 as total dissolved nitrogen, 11 ?mol L-1 of total hydrolyzable dissolved amino acids (THDAA) and 0.6 ?mol L-1 PO4 3-. The labile jelly-OM was degraded within 1.5 days (>98% of proteins, ?70% of THDAA, 97% of dissolved free amino acids and the entire jelly-DOC pool) by a consortium of Pseudoalteromonas, Alteromonas, and Vibrio. These bacteria accounted for >90% of all metabolically active jelly-OM degraders, exhibiting high bacterial growth efficiencies. This implies that a major fraction of the detrital jelly-OM is rapidly incorporated into biomass by opportunistic bacteria. Microbial processing of jelly-OM resulted in the accumulation of tryptophan, dissolved combined amino acids and inorganic nutrients, with possible implications for biogeochemical cycles.

SUBMITTER: Tinta T

PROVIDER: S-EPMC7662693 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Microbial Processing of Jellyfish Detritus in the Ocean.

Tinta Tinkara T Zhao Zihao Z Escobar Alvaro A Klun Katja K Bayer Barbara B Amano Chie C Bamonti Luca L Herndl Gerhard J GJ

Frontiers in microbiology 20201030

When jellyfish blooms decay, sinking jellyfish detrital organic matter (jelly-OM), rich in proteins and characterized by a low C:N ratio, becomes a significant source of OM for marine microorganisms. Yet, the key players and the process of microbial jelly-OM degradation and the consequences for marine ecosystems remain unclear. We simulated the scenario potentially experienced by the coastal pelagic microbiome after the decay of a bloom of the cosmopolitan <i>Aurelia aurita</i> s.l. We show that ...[more]

PMID: 33193256

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Dataset Information

Microbial Processing of Jellyfish Detritus in the Ocean.

Publications

Microbial Processing of Jellyfish Detritus in the Ocean.

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