Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system
10 páginas, 5 figuras, 1 tabla Microbial degradation of dissolved organic matter (DOM) in planktonic ecosystems is carried out by diverse prokaryotic communities, whose growth rates and patterns of DOM utilization modulate carbon and nutrient biogeochemical cycles at local and global scales. Nine di...
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ftcsic:oai:digital.csic.es:10261/49161 2024-02-11T10:06:39+01:00 Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system Teira, Eva Martínez-García, Sandra Lonborg, Ch. Álvarez-Salgado, Xosé Antón 2009 http://hdl.handle.net/10261/49161 https://doi.org/10.1111/j.1758-2229.2009.00079.x en eng Blackwell Publishing http://dx.doi.org/10.1111/j.1758-2229.2009.00079.x Environmental Microbiology Reports 1(6): 545-554 (2009) 1758-2229 http://hdl.handle.net/10261/49161 doi:10.1111/j.1758-2229.2009.00079.x open artículo http://purl.org/coar/resource_type/c_6501 2009 ftcsic https://doi.org/10.1111/j.1758-2229.2009.00079.x 2024-01-16T09:37:34Z 10 páginas, 5 figuras, 1 tabla Microbial degradation of dissolved organic matter (DOM) in planktonic ecosystems is carried out by diverse prokaryotic communities, whose growth rates and patterns of DOM utilization modulate carbon and nutrient biogeochemical cycles at local and global scales. Nine dilution experiments (September 2007 to June 2008) were conducted with surface water from the highly productive coastal upwelling system of the Ría de Vigo (NW Iberian Peninsula) to estimate bacterial growth rates of six relevant marine bacterial groups: Roseobacter, SAR11, Betaproteobacteria,Gammaproteobacteria, SAR86 and Bacteroidetes. Surprisingly, SAR11 dominated over the other bacterial groups in autumn, likely associated to the entry of nutrient-rich, DOC-poor Eastern North Atlantic Central Water (ENACW) into the embayment. Roseobacter and SAR11 showed significantly opposing growth characteristics. SAR11 consistently grows at low rates (range 0.19–0.71 day−1), while Roseobacter has a high growth potential (range 0.70–1.64 day−1). In contrast, Betaproteobacteria, Bacteroidetes, SAR86 and Gammaproteobacteria growth rates widely varied among experiments. Regardless of such temporal variability, mean SAR86 growth rate (range 0.1–1.4 day−1) was significantly lower than that of Gammaproteobacteria (range 0.3–2.1 day−1). Whereas the relative abundance of different bacterial groups showed strong correlations with several environmental variables, group-specific bacterial growth rates did not co-vary with ambient conditions. Our results suggest that different bacterial groups exhibit characteristic growth rates, and, consequently, distinct competitive abilities to succeed under contrasting environmental conditions This study was funded by a fellowship to C.L. from the Early Stage Training site ECOSUMMER (MEST-CT-2004- 0205019). S.M.-G. was founded by a FPU-MEC fellowship. E.T. was founded by a Ramón y Cajal-MEC contract Peer reviewed Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Environmental Microbiology Reports 1 6 545 554 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
description |
10 páginas, 5 figuras, 1 tabla Microbial degradation of dissolved organic matter (DOM) in planktonic ecosystems is carried out by diverse prokaryotic communities, whose growth rates and patterns of DOM utilization modulate carbon and nutrient biogeochemical cycles at local and global scales. Nine dilution experiments (September 2007 to June 2008) were conducted with surface water from the highly productive coastal upwelling system of the Ría de Vigo (NW Iberian Peninsula) to estimate bacterial growth rates of six relevant marine bacterial groups: Roseobacter, SAR11, Betaproteobacteria,Gammaproteobacteria, SAR86 and Bacteroidetes. Surprisingly, SAR11 dominated over the other bacterial groups in autumn, likely associated to the entry of nutrient-rich, DOC-poor Eastern North Atlantic Central Water (ENACW) into the embayment. Roseobacter and SAR11 showed significantly opposing growth characteristics. SAR11 consistently grows at low rates (range 0.19–0.71 day−1), while Roseobacter has a high growth potential (range 0.70–1.64 day−1). In contrast, Betaproteobacteria, Bacteroidetes, SAR86 and Gammaproteobacteria growth rates widely varied among experiments. Regardless of such temporal variability, mean SAR86 growth rate (range 0.1–1.4 day−1) was significantly lower than that of Gammaproteobacteria (range 0.3–2.1 day−1). Whereas the relative abundance of different bacterial groups showed strong correlations with several environmental variables, group-specific bacterial growth rates did not co-vary with ambient conditions. Our results suggest that different bacterial groups exhibit characteristic growth rates, and, consequently, distinct competitive abilities to succeed under contrasting environmental conditions This study was funded by a fellowship to C.L. from the Early Stage Training site ECOSUMMER (MEST-CT-2004- 0205019). S.M.-G. was founded by a FPU-MEC fellowship. E.T. was founded by a Ramón y Cajal-MEC contract Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Teira, Eva Martínez-García, Sandra Lonborg, Ch. Álvarez-Salgado, Xosé Antón |
spellingShingle |
Teira, Eva Martínez-García, Sandra Lonborg, Ch. Álvarez-Salgado, Xosé Antón Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
author_facet |
Teira, Eva Martínez-García, Sandra Lonborg, Ch. Álvarez-Salgado, Xosé Antón |
author_sort |
Teira, Eva |
title |
Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
title_short |
Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
title_full |
Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
title_fullStr |
Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
title_full_unstemmed |
Growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
title_sort |
growth rates of different phylogenetic bacterioplankton groups in a coastal upwelling system |
publisher |
Blackwell Publishing |
publishDate |
2009 |
url |
http://hdl.handle.net/10261/49161 https://doi.org/10.1111/j.1758-2229.2009.00079.x |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://dx.doi.org/10.1111/j.1758-2229.2009.00079.x Environmental Microbiology Reports 1(6): 545-554 (2009) 1758-2229 http://hdl.handle.net/10261/49161 doi:10.1111/j.1758-2229.2009.00079.x |
op_rights |
open |
op_doi |
https://doi.org/10.1111/j.1758-2229.2009.00079.x |
container_title |
Environmental Microbiology Reports |
container_volume |
1 |
container_issue |
6 |
container_start_page |
545 |
op_container_end_page |
554 |
_version_ |
1790604477892395008 |