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GuaB Activity Is Required in Rhizobium tropici During the Early Stages of Nodulation of Determinate Nodules but Is Dispensable for the Sinorhizobium meliloti–Alfalfa Symbiotic Interaction

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http://hdl.handle.net/11336/30781

Aguilar, Orlando Mario; Crespi, Martín; Riccillo, Pablo M.; Collavino, Mónica Mariana; Grasso, Daniel Horacio; GuaB Activity Is Required in Rhizobium tropici During the Early Stages of Nodulation of Determinate Nodules but Is Dispensable for the Sinorhizobium meliloti–Alfalfa Symbiotic Interaction; American Phytopathological Society; Molecular Plant-Microbe Interactions; 18; 7; 3-2005; 742-750

0894-0282

1943-7706

CONICET Digital

CONICET

Procedencia

(LA Referencia)

Ficha

Título:: GuaB Activity Is Required in Rhizobium tropici During the Early Stages of Nodulation of Determinate Nodules but Is Dispensable for the Sinorhizobium meliloti–Alfalfa Symbiotic Interaction
Tema:: nodule development; Otras Ciencias Biológicas; Ciencias Biológicas; CIENCIAS NATURALES Y EXACTAS
Descripción:: The guaB mutant strain Rhizobium tropici CIAT8999-10T is defective in symbiosis with common bean, forming nodules that lack rhizobial content. In order to investigate the timing of the guaB requirement during the nodule formation on the host common bean by the strain CIAT899-10.T, we constructed gene fusions in which the guaB gene is expressed under the control of the symbiotic promoters nodA, bacA, and nifH. Our data indicated that the guaB is required from the early stages of nodulation because full recovery of the wild-type phenotype was accomplished by the nodA-guaB fusion. In addition, we have constructed a guaB mutant derived from Sinorhizobium meliloti 1021, and shown that, unlike R. tropici, the guaB S. meliloti mutant is auxotrophic for guanine and induces wild-type nodules on alfalfa and Medicago truncatula. The guaB R. tropici mutant also is defective in its symbiosis with Macroptilium atropurpureum and Vigna unguiculata but normal with Leucaena leucocephala. These results show that the requirement of the rhizobial guaB for symbiosis is found to be associated with host plants that form determinate type of nodules.; Fil: Collavino, Mónica Mariana. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina; Fil: Riccillo, Pablo M.. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina; Fil: Grasso, Daniel Horacio. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Fil: Crespi, Martín. Centre National de la Recherche Scientifique; Francia; Fil: Aguilar, Orlando Mario. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
Fuente:: reponame:CONICET Digital (CONICET); instname:Consejo Nacional de Investigaciones Científicas y Técnicas; instacron:CONICET
Idioma:: English
Relación:: info:eu-repo/semantics/altIdentifier/doi/10.1094/MPMI-18-0742; info:eu-repo/semantics/altIdentifier/url/https://apsjournals.apsnet.org/doi/abs/10.1094/MPMI-18-0742
Autor/Productor:: Collavino, Mónica Mariana; Riccillo, Pablo M.; Grasso, Daniel Horacio; Crespi, Martín; Aguilar, Orlando Mario
Editor:: American Phytopathological Society
Derechos:: info:eu-repo/semantics/openAccess; https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Fecha:: 2005-03
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; http://purl.org/coar/resource_type/c_6501; info:ar-repo/semantics/articulo
Formato:: application/pdf
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