Metaproteogenomic analysis of a community of sponge symbionts
Identifieur interne : 000481 ( Main/Exploration ); précédent : 000480; suivant : 000482Metaproteogenomic analysis of a community of sponge symbionts
Auteurs : Michael Liu [Australie] ; Lu Fan [Australie] ; Ling Zhong [Australie] ; Staffan Kjelleberg [Australie, Singapour] ; Torsten Thomas [Australie]Source :
- The ISME Journal [ 1751-7362 ] ; 2012.
Abstract
Sponges harbour complex communities of diverse microorganisms, which have been postulated to form intimate symbiotic relationships with their host. Here we unravel some of these interactions by characterising the functional features of the microbial community of the sponge
Url:
DOI: 10.1038/ismej.2012.1
PubMed: 22297557
PubMed Central: 3400405
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>Sponges harbour complex communities of diverse microorganisms, which have been postulated to form intimate symbiotic relationships with their host. Here we unravel some of these interactions by characterising the functional features of the microbial community of the sponge <italic>Cymbastela concentrica</italic>
through a combined metagenomic and metaproteomic approach. We discover the expression of specific transport functions for typical sponge metabolites (for example, halogenated aromatics, dipeptides), which indicates metabolic interactions between the community and the host. We also uncover the simultaneous performance of aerobic nitrification and anaerobic denitrification, which would aid to remove ammonium secreted by the sponge. Our analysis also highlights the requirement for the microbial community to respond to variable environmental conditions and hence express an array of stress protection proteins. Molecular interactions between symbionts and their host might also be mediated by a set of expressed eukaryotic-like proteins and cell–cell mediators. Finally, some sponge-associated bacteria (for example, a <italic>Phyllobacteriaceae</italic>
phylotype) appear to undergo an evolutionary adaptation process to the sponge environment as evidenced by active mobile genetic elements. Our data clearly show that a combined metaproteogenomic approach can provide novel information on the activities, physiology and interactions of sponge-associated microbial communities.</p>
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