Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean

Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean

11 pages, 4 figures, 3 tables

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Main Authors: Alonso-Sáez, Laura, Arístegui, Javier, Pinhassi, Jarone, Gómez-Consarnau, Laura, González, José M., Vaqué, Dolors, Agustí, Susana, Gasol, Josep M.
Format: artículo biblioteca
Language:English
Published: Inter Research 2007-01-19
Subjects:Bacteria, Atlantic Ocean, Diversity, Metabolism, DGGE, CARD-FISH,
Online Access:http://hdl.handle.net/10261/26797
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spelling dig-icm-es-10261-267972022-07-15T08:25:54Z Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean Alonso-Sáez, Laura Arístegui, Javier Pinhassi, Jarone Gómez-Consarnau, Laura González, José M. Vaqué, Dolors Agustí, Susana Gasol, Josep M. Bacteria Atlantic Ocean Diversity Metabolism DGGE CARD-FISH 11 pages, 4 figures, 3 tables Bacterioplankton have the potential to significantly affect the cycling of organic matter in the ocean; however, little is known about the linkage between bacterial assemblage structure and carbon metabolism. In this study, we investigated whether changes in the phylogenetic composition of bacterioplankton were associated with changes in bacterial carbon processing (bacterial production, respiration and biomass) in the subtropical NE Atlantic Ocean. We found consistent differences in the composition of the bacterial assemblage, as revealed by denaturing gradient gel electrophoresis (DGGE) and catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH), along a gradient from the NW African upwelling to the oligotrophic North Atlantic Subtropical Gyre. The percent contribution of Bacteroidetes, Roseobacter and Gammaproteobacteria significantly increased towards more productive waters, whereas the SAR11 clade of the Alphaproteobacteria remained relatively constant (average 28% of DAPI-stained cells) throughout the area. Changes in the composition of the bacterial assemblage detected by DGGE were weakly but significantly correlated with changes in carbon processing variables. The abundances of Roseobacter and Gammaproteobacteria were highly correlated with the concentration of particulate organic carbon and chlorophyll a, reflecting the affinity of these groups to nutrient-enriched conditions. The abundance of Roseobacter was also positively correlated with heterotrophic bacterial production, suggesting their active participation in carbon processing Fieldwork was supported by the COCA (REN2000 1471-CO2-O1-MAR) and DEBACOCA (REN2001-4211-E) projects. Molecular work was funded by projects MICRODIFF (REN2001-2120/MAR), BASICS (EVK3-CT- 2002-00078) and GENMUMAR (CTM2004-02586/MAR). This is a contribution to the MARBEF European Network of Excellence (FP6-2002-Global-1). Financial support was provided by a Ph D fellowship from the Spanish government to L.A.S. Peer reviewed 2010-08-04T10:59:53Z 2010-08-04T10:59:53Z 2007-01-19 artículo http://purl.org/coar/resource_type/c_6501 Aquatic Microbial Ecology 46(1): 43-53 (2007) 0948-3055 http://hdl.handle.net/10261/26797 10.3354/ame046043 en https://doi.org/10.3354/ame046043 open 5867 bytes application/pdf Inter Research
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Bacteria
Atlantic Ocean
Diversity
Metabolism
DGGE
CARD-FISH
Bacteria
Atlantic Ocean
Diversity
Metabolism
DGGE
CARD-FISH
spellingShingle Bacteria
Atlantic Ocean
Diversity
Metabolism
DGGE
CARD-FISH
Bacteria
Atlantic Ocean
Diversity
Metabolism
DGGE
CARD-FISH
Alonso-Sáez, Laura
Arístegui, Javier
Pinhassi, Jarone
Gómez-Consarnau, Laura
González, José M.
Vaqué, Dolors
Agustí, Susana
Gasol, Josep M.
Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
description 11 pages, 4 figures, 3 tables
format artículo
topic_facet Bacteria
Atlantic Ocean
Diversity
Metabolism
DGGE
CARD-FISH
author Alonso-Sáez, Laura
Arístegui, Javier
Pinhassi, Jarone
Gómez-Consarnau, Laura
González, José M.
Vaqué, Dolors
Agustí, Susana
Gasol, Josep M.
author_facet Alonso-Sáez, Laura
Arístegui, Javier
Pinhassi, Jarone
Gómez-Consarnau, Laura
González, José M.
Vaqué, Dolors
Agustí, Susana
Gasol, Josep M.
author_sort Alonso-Sáez, Laura
title Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
title_short Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
title_full Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
title_fullStr Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
title_full_unstemmed Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean
title_sort bacterial assemblage structure and carbon metabolism along a productivity gradient in the ne atlantic ocean
publisher Inter Research
publishDate 2007-01-19
url http://hdl.handle.net/10261/26797
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