Artículo
Growth-promotion of strawberry plants inoculated with Azospirillum brasilense
Pedraza, Raúl Osvaldo; Motok, Jessica
; Salazar, Sergio Miguel; Ragout, Alicia Leonor
; Mentel, Maria Isabel
; Tortora, Maria Laura
; Guerrero Molina, María Fernanda
; Winik, Beatriz Clara; Diaz Ricci, Juan Carlos
Fecha de publicación:
02/2010
Editorial:
Springer
Revista:
World Journal of Microbiology
ISSN:
0959-3993
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Azospirillum brasilense (strains REC3, RLC1, PEC5) were root inoculated in strawberry plants of the cultivars 'Milsei', 'Selva' and 'Camarosa' to assess plant growth-promoting effects. The bacteria were able to promote plant growth (expressed as root length, root area, and dry weight of root and shoot), depending on the genotypes of plants and bacteria used, whereas the stolon production (3-4) depended only on the strawberry cultivar. To explain whether root exudates plays any role on the growth-promotion observed herein, total protein and sugar were determined, and chemotaxis properties were evaluated. The strains showed positive chemotaxis toward the root exudates, being influenced by the total sugars content, suggesting that the latter plays an important role in the chemotaxis effect and may contribute to enhance the root capacity to recruit azospirilla from rhizosphere, thus improving the growth-promoting effect exerted by these bacteria.
Palabras clave:
Azospirillum
,
Chemotaxis
,
Plant Growth-Promoting Effect
,
Strawberry
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Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos(INSIBIO)
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Citación
Pedraza, Raúl Osvaldo; Motok, Jessica; Salazar, Sergio Miguel; Ragout, Alicia Leonor; Mentel, Maria Isabel; et al.; Growth-promotion of strawberry plants inoculated with Azospirillum brasilense; Springer; World Journal of Microbiology; 26; 2; 2-2010; 265-272
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