Data/hora: 01/06/2024 11:45:13

Provedor de dados: | 5
País: | France
Título: | Presence and activity of anaerobic ammonium-oxidizing bacteria at deep-sea hydrothermal vents
Autores: | Byrne, Nathalie; Strous, Marc; Crepeau, Valentin; Kartal, Boran; Birrien, Jean-louis; Schmid, Markus; Lesongeur, Francoise; Schouten, Stefan; Jaeschke, Andrea; Jetten, Mike; Prieur, Daniel; Godfroy, Anne.
Data: | 2009
Ano: | 2009
Palavras-chave: | Hydrothermal vent; Ladderanes; 16S rRNA; Activity; Micro organisms; Anammox.
Resumo: | Recent studies indicate that ammonia is an important electron donor for the oxidation of fixed nitrogen, both in the marine water column and sediments. This process, known as anammox, has so far only been observed in a large range of temperature habitats. The present study investigated the role of anammox in hydrothermal settings. During three oceanographic expeditions to the Mid-Atlantic Ridge, hydrothermal samples were collected from five vent sites, at depths ranging from 750 to 3650m from cold to hot habitats. Evidence for the occurrence of anammox in these particular habitats was demonstrated by concurrent surveys, including the amplification of 16S rRNA gene sequences related to known anammox bacteria, ladderanes lipids analysis and measurement of a (NN)-N-14-N-15 dinitrogen production in isotope-pairing experiments at 60 and 85 degrees C. Together these results indicate that new deep-branching anammox bacteria may be active in these hot habitats.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2009/publication-6921.pdf

DOI:10.1038/ismej.2008.72

Editor: | Nature
Relação: | http://archimer.ifremer.fr/doc/00000/6921/
Formato: | application/pdf
Fonte: | The ISME journal (Multidisciplinary Journal of Microbial Ecology) (1751-7362) (Nature), 2009 , Vol. 3 , N. 1 , P. 117-123
Fonte: | 2009 Nature Publishing Group