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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/89054
Título

Ecology of marine Bacteroidetes: a comparative genomics approach

AutorFernández-Gómez, Beatriz ; Richter, Michael ; Schüler, Margarete; Pinhassi, Jarone; Acinas, Silvia G. ; González, José M.; Pedrós-Alió, Carlos
Palabras clavePolymeric organic matter
Glycoside hydrolase
Proteorhodopsin
Protease
Polymer degradation
Fecha de publicaciónene-2013
EditorInternational Society for Microbial Ecology
CitaciónISME Journal 7: 1026-1037 (2013)
ResumenBacteroidetes are commonly assumed to be specialized in degrading high molecular weight (HMW) compounds and to have a preference for growth attached to particles, surfaces or algal cells. The first sequenced genomes of marine Bacteroidetes seemed to confirm this assumption. Many more genomes have been sequenced recently. Here, a comparative analysis of marine Bacteroidetes genomes revealed a life strategy different from those of other important phyla of marine bacterioplankton such as Cyanobacteria and Proteobacteria. Bacteroidetes have many adaptations to grow attached to particles, have the capacity to degrade polymers, including a large number of peptidases, glycoside hydrolases (GHs), glycosyl transferases, adhesion proteins, as well as the genes for gliding motility. Several of the polymer degradation genes are located in close association with genes for TonB-dependent receptors and transducers, suggesting an integrated regulation of adhesion and degradation of polymers. This confirmed the role of this abundant group of marine bacteria as degraders of particulate matter. Marine Bacteroidetes had a significantly larger number of proteases than GHs, while non-marine Bacteroidetes had equal numbers of both. Proteorhodopsin containing Bacteroidetes shared two characteristics: small genome size and a higher number of genes involved in CO(2) fixation per Mb. The latter may be important in order to survive when floating freely in the illuminated, but nutrient-poor, ocean surface
Descripción12 pages, 7 figures, 1 table
Versión del editorhttp://dx.doi.org/10.1038/ismej.2012.169
URIhttp://hdl.handle.net/10261/89054
DOI10.1038/ismej.2012.169
Identificadoresdoi: 10.1038/ismej.2012.169
issn: 1751-7362
e-issn: 1751-7370
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