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Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516


PARIKH, K  y  JHA, A. Biocontrol features in an indigenous bacterial strain isolated from agricultural soil of Gujarat, India. J. Soil Sci. Plant Nutr. [online]. 2012, vol.12, n.2, pp.245-252. ISSN 0718-9516.

The present investigation was carried out to test the biocontrol potential of a phosphate solubilizing bacterial strain, LK11 isolated from mungbean rhizosphere, in Gujarat, India. This strain besides solubilizing the insoluble P also demonstrated inhibition of Sclerotium rolfsii growth in agar plate and produced a volatile compound, HCN. During in vitro studies LK11 inhibited sclerotia germination by 40%. The most important contributing factor towards increased mungbean growth by reducing fungal attack was the enhanced production of antifungal compounds like PAL (47 mM/ml/mg of tissue), phenolics (90.2 μg/ml/mg) and flavonoids (184.2 mg/ml/g) which is comparable to earlier reports available. Testing the efficiency of this strain in consortium culture alongwith some other PGPR strains and biocontrol microbes at multilocational fields is in offing.

Palabras clave : PSB; Biocontrol; PAL; phenolics; S. rolfsii.

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