Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

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Journal of Pharmacognosy and Phytochemistry

Vol. 6, Issue 6 (2017)

Antifungal activity of some strains of plant growth-promoting rhizobacteria

Author(s): Amitabh Singh, KP Singh, Meenakshi Singh, P Bhareti and UP Singh
Abstract:
The plant growth-promoting activities of 22 isolates of Pseudomonas fluorescens and Bacillus spp. were assess against three spore forming fungi (Alternaria spp., Fusarium spp., Bipolaris spp.). The bacterial isolates showed that differed in PGP range and activities, varied greatly among the isolates. The strain R-3 exhibited siderophore production, three strains (C-03, C6, R-4) solubilized phosphate, 5 strains of Pseudomonas fluorescens (CRM-3, R-3, C6, PSB-2, C-05) produced HCN and the Bacillus spp. showed antifungal activity against the spore forming fungi i.e. Alternaria spp., Fusarium spp., Bipolaris spp. P. fluorescens did not show any inhibition against the spores of the phytopathogenic fungi. Bacillus sp. and P. fluorescens are used for enhancing the growth of plants and eradicating diseases caused by bacteria and fungi. HPLC analysis showed that there was considerable amount of gallic acid present in all the three extracts of Bacillus spp. that confirmed the inhibitory effect showed in the dual plate assay against the tested fungi. The bacterial isolates differed in PGP activities and varied greatly among the isolates. The Bacillus sp. and P. fluorescens are used for enhancing the growth of plants and eradicating diseases caused by bacteria and fungi. The considerable amount of gallic acid present in all the three extracts of Bacillus spp. that confirmed the inhibitory effect showed in the dual plate assay against the tested fungi. This study provides a comprehensive assessment of 22 isolates of Pseudomonas fluorescens and Bacillus spp. The antifungal metabolites produced by Bacillus spp. need to be isolated, purified and tested in field for commercialization.
Pages: 577-582  |  443 Views  14 Downloads
How to cite this article:
Amitabh Singh, KP Singh, Meenakshi Singh, P Bhareti and UP Singh. Antifungal activity of some strains of plant growth-promoting rhizobacteria. Journal of Pharmacognosy and Phytochemistry. 2017; 6(6): 577-582.
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