Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa

Early (4 h) adsorption of Rhizobium melioti L5-30 in low numbers to alfalfa roots in mineral solution was examined for competition with other bacterial strains. All tested competitor strains decreased the adsorption of L5-30 by extents which depended on the strain and its concentration. The decrease...

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Autores principales: Caetano Anollés, Gustavo, Favelukes, Gabriel
Formato: Articulo
Lenguaje:Inglés
Publicado: 1986
Materias:
Química
Simbiosis
Rhizobium
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/106623
http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC203533&blobtype=pdf
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-106623
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Simbiosis
Rhizobium
spellingShingle Química
Simbiosis
Rhizobium
Caetano Anollés, Gustavo
Favelukes, Gabriel
Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
topic_facet Química
Simbiosis
Rhizobium
description Early (4 h) adsorption of Rhizobium melioti L5-30 in low numbers to alfalfa roots in mineral solution was examined for competition with other bacterial strains. All tested competitor strains decreased the adsorption of L5-30 by extents which depended on the strain and its concentration. The decrease of adsorption by R. meliloti competitors (all of them infective in alfalfa) was nearly complete at saturation (97 to 99% decrease). AU other heterologous rhizobia and Agrobacterium tumefaciens at saturating concentrations (106 to 107 per ml) decreased adsorption of L5-30 only partially, less than 60%. The differential effects of homologous and heterologous competitors indicate that initial adsorption of R. meliloti to the root surface of its host occurs in symbiont-specific as well as nonspecific modes and suggest the existence of binding sites on roots which are highly selective for the specific microsymbiont in the presence of other heterologous bacteria even in very unfavorable (less than 10-4) symbiont-competitor concentration ratios.
format Articulo
Articulo
author Caetano Anollés, Gustavo
Favelukes, Gabriel
author_facet Caetano Anollés, Gustavo
Favelukes, Gabriel
author_sort Caetano Anollés, Gustavo
title Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
title_short Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
title_full Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
title_fullStr Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
title_full_unstemmed Host-Symbiont Specificity Expressed during Early Adsorption of <i>Rhizobium meliloti</i> to the Root Surface of Alfalfa
title_sort host-symbiont specificity expressed during early adsorption of <i>rhizobium meliloti</i> to the root surface of alfalfa
publishDate 1986
url http://sedici.unlp.edu.ar/handle/10915/106623
http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC203533&blobtype=pdf
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AT favelukesgabriel hostsymbiontspecificityexpressedduringearlyadsorptionofirhizobiummelilotiitotherootsurfaceofalfalfa
bdutipo_str Repositorios
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