Artículo
Effect of Azospirillum brasilense coinoculated with Rhizobium on Phaseolus vulgaris flavonoids and Nod factor production under salt stress
Dardanelli, Marta Susana
; Fernández de Córdoba, Francisco J.; Espuny, M. Rosario; Rodríguez Carvajal, Miguel A.; Soria Díaz, María E.; Gil Serrano, Antonio M.; Okon, Yaacov; Megías, Manuel
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Fecha de publicación:
11/2008
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Soil Biology And Biochemistry
ISSN:
0038-0717
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effects of salt upon Azospirillum brasilense strain Cd on plant growth, nodulation, flavonoid and lipochitooligosaccharide (LCOs-Nod factor) production, were sequentially followed after 4, 7 and 14 days during a Rhizobium-Phaseolus vulgaris cv. Negro Jamapa interaction, in a hydroponics growth system. Azospirillum brasilense promoted root branching in bean seedling roots and increased secretion of nodgene-inducing flavonoid species, as detected by high-performance liquid chromatography (HPLC). The results also support that A. brasilense allows a longer, more persistent exudation of flavonoids by bean roots. A general positive effect of Azospirillum-Rhizobium coinoculation on the expression of nod-genes by Rhizobium tropici CIAT899 and Rhizobium etli ISP42, and on nodulation factor patterns, was observed in the presence of root exudates. The negative effects obtained under salt stress on nod-gene expression and on Nod factors’ appearance were relieved in coinoculated plants.
Palabras clave:
Azospirillum brasilense
,
Rhizobium tropici
,
Rhizobium etli
,
Coinoculation
Archivos asociados
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Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Dardanelli, Marta Susana; Fernández de Córdoba, Francisco J.; Espuny, M. Rosario; Rodríguez Carvajal, Miguel A.; Soria Díaz, María E.; et al.; Effect of Azospirillum brasilense coinoculated with Rhizobium on Phaseolus vulgaris flavonoids and Nod factor production under salt stress; Pergamon-Elsevier Science Ltd; Soil Biology And Biochemistry; 40; 11; 11-2008; 2713-2721
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