PMID: 15242282Jul 10, 2004Paper

Rhizobia as a biological control agent against soil borne plant pathogenic fungi

Indian Journal of Experimental Biology
V K DeshwalD K Maheshwari

Abstract

Rhizobia promote the growth of plants either directly through N2 fixation, supply of nutrients, synthesis of phytohormones and solubilization of minerals, or indirectly as a biocontrol agent by inhibiting the growth of pathogens. The biocontrol effect of rhizobia is due to the secretion of secondary metabolites such as antibiotics and HCN. Siderophore production in iron stress conditions provides rhizobia an added advantage, resulting in exclusion of pathogens due to iron starvation.

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