EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells

Planktonic cells of Sinorhizobium meliloti, a Gram-negative symbiotic bacterium, display autoaggregation under static conditions. ExpR is a LuxR-type regulator that controls many functions in S. meliloti, including synthesis of two exopolysaccharides, EPS I (succinoglycan) and EPS II (galactoglucan)...

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Autor principal:	Zorreguieta, Angeles
Publicado:	2010
Materias:	exopolysaccharide galactoglucan mutant protein protein expR succinoglycan transcription factor LuxR unclassified drug article bacterial cell bacterial strain bacterioplankton cell aggregation controlled study gene locus nonhuman priority journal protein function protein synthesis Sinorhizobium meliloti Biofilms Biomass Flocculation Galactans Gene Expression Regulation, Bacterial Genes, Bacterial Glucans Microbial Interactions Polysaccharides, Bacterial Quorum Sensing Symbiosis Bacteria (microorganisms) Negibacteria
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03438651_v61_n5_p465_Sorroche http://hdl.handle.net/20.500.12110/paper_03438651_v61_n5_p465_Sorroche
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03438651_v61_n5_p465_Sorroche
record_format	dspace
spelling	paper:paper_03438651_v61_n5_p465_Sorroche2023-06-08T15:34:33Z EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells Zorreguieta, Angeles exopolysaccharide galactoglucan mutant protein protein expR succinoglycan transcription factor LuxR unclassified drug article bacterial cell bacterial strain bacterioplankton cell aggregation controlled study gene locus nonhuman priority journal protein function protein synthesis Sinorhizobium meliloti Biofilms Biomass Flocculation Galactans Gene Expression Regulation, Bacterial Genes, Bacterial Glucans Microbial Interactions Polysaccharides, Bacterial Quorum Sensing Sinorhizobium meliloti Symbiosis Bacteria (microorganisms) Negibacteria Sinorhizobium meliloti Planktonic cells of Sinorhizobium meliloti, a Gram-negative symbiotic bacterium, display autoaggregation under static conditions. ExpR is a LuxR-type regulator that controls many functions in S. meliloti, including synthesis of two exopolysaccharides, EPS I (succinoglycan) and EPS II (galactoglucan). Since exopolysaccharides are important for bacterial attachment, we studied the involvement of EPS I and II in autoaggregation of S. meliloti. Presence of an intact copy of the expR locus was shown to be necessary for autoaggregation. A mutant incapable of producing EPS I displayed autoaggregation percentage similar to that of parental strain, whereas autoaggregation was significantly lower for a mutant defective in biosynthesis of EPS II. Our findings clearly indicate that EPS II is the essential component involved in autoaggregation of planktonic S. meliloti cells, and that EPS I plays no role in such aggregation. © 2010 Springer Science+Business Media, LLC. Fil:Zorreguieta, Ã. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03438651_v61_n5_p465_Sorroche http://hdl.handle.net/20.500.12110/paper_03438651_v61_n5_p465_Sorroche
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	exopolysaccharide galactoglucan mutant protein protein expR succinoglycan transcription factor LuxR unclassified drug article bacterial cell bacterial strain bacterioplankton cell aggregation controlled study gene locus nonhuman priority journal protein function protein synthesis Sinorhizobium meliloti Biofilms Biomass Flocculation Galactans Gene Expression Regulation, Bacterial Genes, Bacterial Glucans Microbial Interactions Polysaccharides, Bacterial Quorum Sensing Sinorhizobium meliloti Symbiosis Bacteria (microorganisms) Negibacteria Sinorhizobium meliloti
spellingShingle	exopolysaccharide galactoglucan mutant protein protein expR succinoglycan transcription factor LuxR unclassified drug article bacterial cell bacterial strain bacterioplankton cell aggregation controlled study gene locus nonhuman priority journal protein function protein synthesis Sinorhizobium meliloti Biofilms Biomass Flocculation Galactans Gene Expression Regulation, Bacterial Genes, Bacterial Glucans Microbial Interactions Polysaccharides, Bacterial Quorum Sensing Sinorhizobium meliloti Symbiosis Bacteria (microorganisms) Negibacteria Sinorhizobium meliloti Zorreguieta, Angeles EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
topic_facet	exopolysaccharide galactoglucan mutant protein protein expR succinoglycan transcription factor LuxR unclassified drug article bacterial cell bacterial strain bacterioplankton cell aggregation controlled study gene locus nonhuman priority journal protein function protein synthesis Sinorhizobium meliloti Biofilms Biomass Flocculation Galactans Gene Expression Regulation, Bacterial Genes, Bacterial Glucans Microbial Interactions Polysaccharides, Bacterial Quorum Sensing Sinorhizobium meliloti Symbiosis Bacteria (microorganisms) Negibacteria Sinorhizobium meliloti
description	Planktonic cells of Sinorhizobium meliloti, a Gram-negative symbiotic bacterium, display autoaggregation under static conditions. ExpR is a LuxR-type regulator that controls many functions in S. meliloti, including synthesis of two exopolysaccharides, EPS I (succinoglycan) and EPS II (galactoglucan). Since exopolysaccharides are important for bacterial attachment, we studied the involvement of EPS I and II in autoaggregation of S. meliloti. Presence of an intact copy of the expR locus was shown to be necessary for autoaggregation. A mutant incapable of producing EPS I displayed autoaggregation percentage similar to that of parental strain, whereas autoaggregation was significantly lower for a mutant defective in biosynthesis of EPS II. Our findings clearly indicate that EPS II is the essential component involved in autoaggregation of planktonic S. meliloti cells, and that EPS I plays no role in such aggregation. © 2010 Springer Science+Business Media, LLC.
author	Zorreguieta, Angeles
author_facet	Zorreguieta, Angeles
author_sort	Zorreguieta, Angeles
title	EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
title_short	EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
title_full	EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
title_fullStr	EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
title_full_unstemmed	EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells
title_sort	eps ii-dependent autoaggregation of sinorhizobium meliloti planktonic cells
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03438651_v61_n5_p465_Sorroche http://hdl.handle.net/20.500.12110/paper_03438651_v61_n5_p465_Sorroche
work_keys_str_mv	AT zorreguietaangeles epsiidependentautoaggregationofsinorhizobiummelilotiplanktoniccells
_version_	1768543136056868864

EPS II-dependent autoaggregation of sinorhizobium meliloti planktonic cells

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