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Induction of systemic resistance in adzuki bean through seed bacterisation

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Efficacy of seed bacterisation with six rhizobacterial isolates was assessed in laboratory conditions to evaluate their resistance-inducing ability in adzuki bean. The selected indigenous isolates were characterised as Pseudomonas fluorescens and Bacillus species. Among these isolates, P. fluorescens isolate B5 showed the maximum inhibition of mycelial growth of Phoma species and increased plant growth promotion. P. fluorescens isolates B5, B6, B8, B9 and B17 and Bacillus sp. isolate B18 were effective in reducing the percentage of diseased seedlings. Increased levels of peroxidase, phenylalanine ammonia lyase and polyphenol oxidase were observed in seedlings indicating higher levels of induced systemic resistance. Maximum induction of defence enzymes was observed with isolate B5, followed by B6 and B18. The utilisation of indigenous plant growth promoting rhizobacteria strains as inducers of plant defence response may offer a practical method for eco-friendly plant disease management.
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Document Type: Research Article

Publication date: December 1, 2014

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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