1. Microbial communities in sunken wood are structured by wood-boring bivalves and location in a submarine canyon
- Author
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Fagervold, S. K., Romano, Chiara, Kalenitchenko, Dimitri, Borowski, Christian, Nunes-Jorge, Amandine, Martin, Daniel, Galand, Pierre E., Laboratoire d'Ecogéochimie des environnements benthiques (LECOB), Observatoire océanologique de Banyuls (OOB), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre d'Estudis Avançats de Blanes (CEAB), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Max Planck Institute for Marine Microbiology, and Max-Planck-Gesellschaft
- Subjects
Microorganism ,Science ,Marine life ,Submarine canyon ,Marine Biology ,complex mixtures ,Microbiology ,Niche Construction ,Microbial Ecology ,RNA, Ribosomal, 16S ,Microbial Physiology ,Botany ,Animals ,Ecosystem ,Seawater ,14. Life underwater ,Symbiosis ,Microbial Metabolism ,Canyon ,geography ,Multidisciplinary ,geography.geographical_feature_category ,biology ,Bacteria ,Ecology ,Ecology and Environmental Sciences ,technology, industry, and agriculture ,Marine Ecology ,Biology and Life Sciences ,Marine invertebrates ,15. Life on land ,Bivalvia ,biology.organism_classification ,Wood ,Species Interactions ,[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology ,Community Ecology ,Medicine ,Symbiotic bacteria ,Research Article - Abstract
9 páginas, 3 figuras, 2 tablas., The cornerstones of sunken wood ecosystems are microorganisms involved in cellulose degradation. These can either be free-living microorganisms in the wood matrix or symbiotic bacteria associated with wood-boring bivalves such as emblematic species of Xylophaga, the most common deep-sea woodborer. Here we use experimentally submerged pine wood, placed in and outside the Mediterranean submarine Blanes Canyon, to compare the microbial communities on the wood, in fecal pellets of Xylophaga spp. and associated with the gills of these animals. Analyses based on tag pyrosequencing of the 16S rRNA bacterial gene showed that sunken wood contained three distinct microbial communities. Wood and pellet communities were different from each other suggesting that Xylophaga spp. create new microbial niches by excreting fecal pellets into their burrows. In turn, gills of Xylophaga spp. contain potential bacterial symbionts, as illustrated by the presence of sequences closely related to symbiotic bacteria found in other wood eating marine invertebrates. Finally, we found that sunken wood communities inside the canyon were different and more diverse than the ones outside the canyon. This finding extends to the microbial world the view that submarine canyons are sites of diverse marine life., The work of PE Galand and SK Fagervold was supported by the Agence Nationale de la Recherche (ANR) project MICADO (ANR-11JSV7-003-01). The present work was developed within the framework of the projects PROMETEO (CTM2007-66316-C02-01/MAR) and DOSMARES (CTM2010-21810-C03-03). This paper is also a contribution of D Martin and C Romano to the CRG 2009SRG665 funded by the Generalitat de Catalunya. ANJ was funded within the DIWOOD research project by the Max Planck Gesellschaft; CB was funded within the Cluster of Excellence 0The Ocean in the Earth System0 at Marum, Bremen, by the German Research Foundation (DFG).
- Published
- 2013