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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21119
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21119
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-15T15:13:44Zoai: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:34982025-10-15 15:13:44.291CONICET 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
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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 13.22299

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