Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021

Bacterial surface polysaccharides are crucial for establishment of successful rhizobia-legume symbiosis, and in most bacteria, are also critical for biofilm formation and surface colonization. In Sinorhizobium meliloti, the regulatory protein MucR controls exopolysaccharide production. To clarify th...

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Autores: Rinaudi, Luciana Veronica, Sorroche, Fernando Guido, Zorreguieta, Angeles, Giordano, Walter Fabian
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/14718
Acceso en línea:http://hdl.handle.net/11336/14718
Access Level:acceso abierto
Palabra clave:Rhizobia
Mucr
Exopolysaccharides
Biofilms
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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spelling Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021Rinaudi, Luciana VeronicaSorroche, Fernando GuidoZorreguieta, AngelesGiordano, Walter FabianRhizobiaMucrExopolysaccharidesBiofilmshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Bacterial surface polysaccharides are crucial for establishment of successful rhizobia-legume symbiosis, and in most bacteria, are also critical for biofilm formation and surface colonization. In Sinorhizobium meliloti, the regulatory protein MucR controls exopolysaccharide production. To clarify the relationship between exopolysaccharide synthesis and biofilm formation, we studied mucR expression under growth conditions that influence attachment to polyvinylchloride, developed a microtiter plate assay to quantify biofilm formation in S. meliloti strain Rm1021 and mutants defective in succinoglycan (EPS I) and/or galactoglucan (EPS II) production, and analyzed expression of EPS I and EPS II genes by quantitative reverse transcriptase-PCR. Consistent with previous studies of planktonic bacteria, we found that disruption of the mucR gene in Rm1021 biofilms increased EPS II, but reduced EPS I gene expression. mucR expression was not affected by environmental conditions that influence biofilm formation on polyvinylchloride, and biofilm formation by Rm1021 was independent of exopolysaccharide synthesis. Other factors on the Rm1021 cell surface, and growth conditions, presumably regulate attachment and/or growth as a biofilm on polyvinylchloride.Fil: Rinaudi, Luciana Veronica. Universidad Nacional de Río Cuarto. Departamento de Biología Molecular; ArgentinaFil: Sorroche, Fernando Guido. Universidad Nacional de Río Cuarto. Departamento de Biología Molecular; ArgentinaFil: Zorreguieta, Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; ArgentinaFil: Giordano, Walter Fabian. Universidad Nacional de Río Cuarto. Departamento de Biología Molecular; ArgentinaFederation of European Microbiological Societies2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14718Rinaudi, Luciana Veronica; Sorroche, Fernando Guido; Zorreguieta, Angeles; Giordano, Walter Fabian; Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021; Federation of European Microbiological Societies; Fems Microbiology Letters; 302; 1; 1-2010; 15-211574-6968enginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/femsle/article-lookup/doi/10.1111/j.1574-6968.2009.01826.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1574-6968.2009.01826.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:56:32Zoai:ri.conicet.gov.ar:11336/14718instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:56:32.919CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
title Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
spellingShingle Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
Rinaudi, Luciana Veronica
Rhizobia
Mucr
Exopolysaccharides
Biofilms
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
title_full Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
title_fullStr Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
title_full_unstemmed Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
title_sort Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021
dc.creator.none.fl_str_mv Rinaudi, Luciana Veronica
Sorroche, Fernando Guido
Zorreguieta, Angeles
Giordano, Walter Fabian
author Rinaudi, Luciana Veronica
author_facet Rinaudi, Luciana Veronica
Sorroche, Fernando Guido
Zorreguieta, Angeles
Giordano, Walter Fabian
author_role author
author2 Sorroche, Fernando Guido
Zorreguieta, Angeles
Giordano, Walter Fabian
author2_role author
author
author
dc.subject.none.fl_str_mv Rhizobia
Mucr
Exopolysaccharides
Biofilms
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic Rhizobia
Mucr
Exopolysaccharides
Biofilms
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description Bacterial surface polysaccharides are crucial for establishment of successful rhizobia-legume symbiosis, and in most bacteria, are also critical for biofilm formation and surface colonization. In Sinorhizobium meliloti, the regulatory protein MucR controls exopolysaccharide production. To clarify the relationship between exopolysaccharide synthesis and biofilm formation, we studied mucR expression under growth conditions that influence attachment to polyvinylchloride, developed a microtiter plate assay to quantify biofilm formation in S. meliloti strain Rm1021 and mutants defective in succinoglycan (EPS I) and/or galactoglucan (EPS II) production, and analyzed expression of EPS I and EPS II genes by quantitative reverse transcriptase-PCR. Consistent with previous studies of planktonic bacteria, we found that disruption of the mucR gene in Rm1021 biofilms increased EPS II, but reduced EPS I gene expression. mucR expression was not affected by environmental conditions that influence biofilm formation on polyvinylchloride, and biofilm formation by Rm1021 was independent of exopolysaccharide synthesis. Other factors on the Rm1021 cell surface, and growth conditions, presumably regulate attachment and/or growth as a biofilm on polyvinylchloride.
publishDate 2010
dc.date.none.fl_str_mv 2010-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/14718
Rinaudi, Luciana Veronica; Sorroche, Fernando Guido; Zorreguieta, Angeles; Giordano, Walter Fabian; Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021; Federation of European Microbiological Societies; Fems Microbiology Letters; 302; 1; 1-2010; 15-21
1574-6968
url http://hdl.handle.net/11336/14718
identifier_str_mv Rinaudi, Luciana Veronica; Sorroche, Fernando Guido; Zorreguieta, Angeles; Giordano, Walter Fabian; Analysis of mucR gene regulating biosynthesis of exopolysaccharides: implications for biofilm formation in Sinorhizobium meliloti Rm1021; Federation of European Microbiological Societies; Fems Microbiology Letters; 302; 1; 1-2010; 15-21
1574-6968
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/femsle/article-lookup/doi/10.1111/j.1574-6968.2009.01826.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1574-6968.2009.01826.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Federation of European Microbiological Societies
publisher.none.fl_str_mv Federation of European Microbiological Societies
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,81155

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