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Archaea in organic-lean and organic-rich marine subsurface sediments: an environmental gradient reflected in distinct phylogenetic lineages ArchiMer
Durbin, Alan M.; Teske, Andreas.
Examining the patterns of archaeal diversity in little-explored organic-lean marine subsurface sediments presents an opportunity to study the association of phylogenetic affiliation and habitat preference in uncultured marine Archaea. Here we have compiled and re-analyzed published archaeal 16S rRNA clone library datasets across a spectrum of sediment trophic states characterized by a wide range of terminal electron-accepting processes. Our results show that organic-lean marine sediments in deep marine basins and oligotrophic open ocean locations are inhabited by distinct lineages of archaea that are not found in the more frequently studied, organic-rich continental margin sediments. We hypothesize that different combinations of electron donor and acceptor...
Tipo: Text Palavras-chave: Archaea; Marine sediments; Oligotrophy; Subsurface; Phylogeny; Uncultured archaea.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00263/37444/35695.pdf
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