Integrated analysis of bacterial and microeukaryotic communities from differentially active mud volcanoes in the Gulf of Cadiz
authors Coelho, FJRC; Louvado, A; Domingues, PM; Cleary, DFR; Ferreira, M; Almeida, A; Cunha, MR; Cunha, A; Gomes, NCM
nationality International
journal SCIENTIFIC REPORTS
keywords DEEP-SEA SEDIMENTS; RIBOSOMAL-RNA SEQUENCES; MID-ATLANTIC RIDGE; PROKARYOTIC COMMUNITIES; MICROBIAL COMMUNITIES; EUKARYOTIC DIVERSITY; MOLECULAR EVIDENCE; SMALL-SUBUNIT; OCEAN; METHANE
abstract The present study assesses the diversity and composition of sediment bacterial and microeukaryotic communities from deep-sea mud volcanoes (MVs) associated with strike-slip faults in the South-West Iberian Margin (SWIM). We used a 16S/18S rRNA gene based pyrosequencing approach to characterize and correlate the sediment bacterial and microeukaryotic communities from MVs with differing gas seep regimes and from an additional site with no apparent seeping activity. In general, our results showed significant compositional changes of bacterial and microeukaryotic communities in sampling sites with different seepage regimes. Sediment bacterial communities were enriched with Methylococcales (putative methanotrophs) but had lower abundances of Rhodospirillales, Nitrospirales and SAR202 in the more active MVs. Within microeukaryotic communities, members of the Lobosa (lobose amoebae) were enriched in more active MVs. We also showed a strong correlation between Methylococcales populations and lobose amoeba in active MVs. This study provides baseline information on the diversity and composition of bacterial and microeukaryotic communities in deep-sea MVs associated with strike-slip faults.
publisher NATURE PUBLISHING GROUP
issn 2045-2322
year published 2016
volume 6
digital object identifier (doi) 10.1038/srep35272
web of science category Multidisciplinary Sciences
subject category Science & Technology - Other Topics
unique article identifier WOS:000385768900001
link http://www.nature.com/articles/srep35272#supplementary-information
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