Potential of Entomopathogenic Bacillus thuringiensis as Plant Growth Promoting Rhizobacteria and Biological Control Agents for Tomato Fusarium WiltReport as inadecuate



 Potential of Entomopathogenic Bacillus thuringiensis as Plant Growth Promoting Rhizobacteria and Biological Control Agents for Tomato Fusarium Wilt


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Abstract—Bacillus thuringiensis has been used as an effective bioinsecticide because it produces the proteins Cry and Cyt, which are highly toxic to insects in certain situations. However, recently, B. thuringiensis was used as a biological control agent that can suppress plant disease. In this study, the antagonistic activities of B. thuringiensisAS17 japonensisand AS18 kurstaki against the fungal pathogen Fusarium oxysporum f.sp. lycopersici FOL were examined using a dual culture technique. Furthermore, B. thuringiensis strains suppressed the development of wilt symptoms caused by FOL in tomato plants. After inoculating six strains of B. thuringiensis suspension following inoculation of FOL, the development of wilt symptoms became less than control, especially with B. thuringiensisAS17 japonensis and AS20 CR371-H. Furthermore, we proved that B. thuringiensis strains are plant growth promoting rhizobacteria PGPR that can promote plant growth. Seed germination and shoot elongation were promoted by treating the tomato seeds with a bacterial culture filtrate and a bacterial suspension.



Author: International Journal of Environmental & Agriculture Research (IJOEAR)

Source: https://archive.org/



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