Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection
- Autores
- Williams, Alan; Wilkinson, Adam; Krehenbrink, Martin; Russo, Daniela Marta; Zorreguieta, Angeles; Downie, J. Allan
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Rhizobium leguminosarum biovar viciae genome contains several genes predicted to determine surface polysaccharides. Mutants predicted to affect the initial steps of polysaccharide synthesis were identified and characterized. In addition to the known cellulose (cel) and acidic exopolysaccharide (EPS) (pss) genes, we mutated three other loci; one of these loci (gmsA) determines glucomannan synthesis and one (gelA) determines a gel-forming polysaccharide, but the role of the other locus (an exoY-like gene) was not identified. Mutants were tested for attachment and biofilm formation in vitro and on root hairs; the mutant lacking the EPS was defective for both of these characteristics, but mutation of gelA or the exoY-like gene had no effect on either type of attachment. The cellulose (celA) mutant attached and formed normal biofilms in vitro, but it did not form a biofilm on root hairs, although attachment did occur. The cellulose-dependent biofilm on root hairs appears not to be critical for nodulation, because the celA mutant competed with the wild-type for nodule infection. The glucomannan (gmsA) mutant attached and formed normal biofilms in vitro, but it was defective for attachment and biofilm formation on root hairs. Although this mutant formed nodules on peas, it was very strongly outcompeted by the wild type in mixed inoculations, showing that glucomannan is critical for competitive nodulation. The polysaccharide synthesis genes around gmsA are highly conserved among other rhizobia and agrobacteria but are absent from closely related bacteria (such as Brucella spp.) that are not normally plant associated, suggesting that these genes may play a wide role in bacterium-plant interactions.
Fil: Williams, Alan. John Innes Institute; Reino Unido
Fil: Wilkinson, Adam. John Innes Institute; Reino Unido
Fil: Krehenbrink, Martin. John Innes Institute; Reino Unido
Fil: Russo, Daniela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Zorreguieta, Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Downie, J. Allan. John Innes Institute; Reino Unido - Materia
-
Glucomannan
Adhesion
Polarity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/21119
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Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infectionWilliams, AlanWilkinson, AdamKrehenbrink, MartinRusso, Daniela MartaZorreguieta, AngelesDownie, J. AllanGlucomannanAdhesionPolarityhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The Rhizobium leguminosarum biovar viciae genome contains several genes predicted to determine surface polysaccharides. Mutants predicted to affect the initial steps of polysaccharide synthesis were identified and characterized. In addition to the known cellulose (cel) and acidic exopolysaccharide (EPS) (pss) genes, we mutated three other loci; one of these loci (gmsA) determines glucomannan synthesis and one (gelA) determines a gel-forming polysaccharide, but the role of the other locus (an exoY-like gene) was not identified. Mutants were tested for attachment and biofilm formation in vitro and on root hairs; the mutant lacking the EPS was defective for both of these characteristics, but mutation of gelA or the exoY-like gene had no effect on either type of attachment. The cellulose (celA) mutant attached and formed normal biofilms in vitro, but it did not form a biofilm on root hairs, although attachment did occur. The cellulose-dependent biofilm on root hairs appears not to be critical for nodulation, because the celA mutant competed with the wild-type for nodule infection. The glucomannan (gmsA) mutant attached and formed normal biofilms in vitro, but it was defective for attachment and biofilm formation on root hairs. Although this mutant formed nodules on peas, it was very strongly outcompeted by the wild type in mixed inoculations, showing that glucomannan is critical for competitive nodulation. The polysaccharide synthesis genes around gmsA are highly conserved among other rhizobia and agrobacteria but are absent from closely related bacteria (such as Brucella spp.) that are not normally plant associated, suggesting that these genes may play a wide role in bacterium-plant interactions.Fil: Williams, Alan. John Innes Institute; Reino UnidoFil: Wilkinson, Adam. John Innes Institute; Reino UnidoFil: Krehenbrink, Martin. John Innes Institute; Reino UnidoFil: Russo, Daniela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Zorreguieta, Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Downie, J. Allan. John Innes Institute; Reino UnidoAmerican Society for Microbiology2008-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21119Williams, Alan; Wilkinson, Adam; Krehenbrink, Martin; Russo, Daniela Marta; Zorreguieta, Angeles; et al.; Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection; American Society for Microbiology; Journal Of Bacteriology; 190; 13; 4-2008; 4706-47150021-91931098-5530CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://jb.asm.org/content/190/13/4706.longinfo:eu-repo/semantics/altIdentifier/doi/10.1128/JB.01694-07info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:25Zoai:ri.conicet.gov.ar:11336/21119instacron: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:34982025-09-29 10:16:26.173CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
title |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
spellingShingle |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection Williams, Alan Glucomannan Adhesion Polarity |
title_short |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
title_full |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
title_fullStr |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
title_full_unstemmed |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
title_sort |
Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection |
dc.creator.none.fl_str_mv |
Williams, Alan Wilkinson, Adam Krehenbrink, Martin Russo, Daniela Marta Zorreguieta, Angeles Downie, J. Allan |
author |
Williams, Alan |
author_facet |
Williams, Alan Wilkinson, Adam Krehenbrink, Martin Russo, Daniela Marta Zorreguieta, Angeles Downie, J. Allan |
author_role |
author |
author2 |
Wilkinson, Adam Krehenbrink, Martin Russo, Daniela Marta Zorreguieta, Angeles Downie, J. Allan |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Glucomannan Adhesion Polarity |
topic |
Glucomannan Adhesion Polarity |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The Rhizobium leguminosarum biovar viciae genome contains several genes predicted to determine surface polysaccharides. Mutants predicted to affect the initial steps of polysaccharide synthesis were identified and characterized. In addition to the known cellulose (cel) and acidic exopolysaccharide (EPS) (pss) genes, we mutated three other loci; one of these loci (gmsA) determines glucomannan synthesis and one (gelA) determines a gel-forming polysaccharide, but the role of the other locus (an exoY-like gene) was not identified. Mutants were tested for attachment and biofilm formation in vitro and on root hairs; the mutant lacking the EPS was defective for both of these characteristics, but mutation of gelA or the exoY-like gene had no effect on either type of attachment. The cellulose (celA) mutant attached and formed normal biofilms in vitro, but it did not form a biofilm on root hairs, although attachment did occur. The cellulose-dependent biofilm on root hairs appears not to be critical for nodulation, because the celA mutant competed with the wild-type for nodule infection. The glucomannan (gmsA) mutant attached and formed normal biofilms in vitro, but it was defective for attachment and biofilm formation on root hairs. Although this mutant formed nodules on peas, it was very strongly outcompeted by the wild type in mixed inoculations, showing that glucomannan is critical for competitive nodulation. The polysaccharide synthesis genes around gmsA are highly conserved among other rhizobia and agrobacteria but are absent from closely related bacteria (such as Brucella spp.) that are not normally plant associated, suggesting that these genes may play a wide role in bacterium-plant interactions. Fil: Williams, Alan. John Innes Institute; Reino Unido Fil: Wilkinson, Adam. John Innes Institute; Reino Unido Fil: Krehenbrink, Martin. John Innes Institute; Reino Unido Fil: Russo, Daniela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Zorreguieta, Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Downie, J. Allan. John Innes Institute; Reino Unido |
description |
The Rhizobium leguminosarum biovar viciae genome contains several genes predicted to determine surface polysaccharides. Mutants predicted to affect the initial steps of polysaccharide synthesis were identified and characterized. In addition to the known cellulose (cel) and acidic exopolysaccharide (EPS) (pss) genes, we mutated three other loci; one of these loci (gmsA) determines glucomannan synthesis and one (gelA) determines a gel-forming polysaccharide, but the role of the other locus (an exoY-like gene) was not identified. Mutants were tested for attachment and biofilm formation in vitro and on root hairs; the mutant lacking the EPS was defective for both of these characteristics, but mutation of gelA or the exoY-like gene had no effect on either type of attachment. The cellulose (celA) mutant attached and formed normal biofilms in vitro, but it did not form a biofilm on root hairs, although attachment did occur. The cellulose-dependent biofilm on root hairs appears not to be critical for nodulation, because the celA mutant competed with the wild-type for nodule infection. The glucomannan (gmsA) mutant attached and formed normal biofilms in vitro, but it was defective for attachment and biofilm formation on root hairs. Although this mutant formed nodules on peas, it was very strongly outcompeted by the wild type in mixed inoculations, showing that glucomannan is critical for competitive nodulation. The polysaccharide synthesis genes around gmsA are highly conserved among other rhizobia and agrobacteria but are absent from closely related bacteria (such as Brucella spp.) that are not normally plant associated, suggesting that these genes may play a wide role in bacterium-plant interactions. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-04 |
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/11336/21119 Williams, Alan; Wilkinson, Adam; Krehenbrink, Martin; Russo, Daniela Marta; Zorreguieta, Angeles; et al.; Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection; American Society for Microbiology; Journal Of Bacteriology; 190; 13; 4-2008; 4706-4715 0021-9193 1098-5530 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/21119 |
identifier_str_mv |
Williams, Alan; Wilkinson, Adam; Krehenbrink, Martin; Russo, Daniela Marta; Zorreguieta, Angeles; et al.; Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection; American Society for Microbiology; Journal Of Bacteriology; 190; 13; 4-2008; 4706-4715 0021-9193 1098-5530 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://jb.asm.org/content/190/13/4706.long info:eu-repo/semantics/altIdentifier/doi/10.1128/JB.01694-07 |
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 |
dc.publisher.none.fl_str_mv |
American Society for Microbiology |
publisher.none.fl_str_mv |
American Society for Microbiology |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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1844614108495740928 |
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13.070432 |