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The efficacy of Pseudomonas aeruginosa and Sargassum ilicifolium alone or in combination was examined to induce systemic resistance against a pathogenic strain of Macrophomina phaseolina in soybean under screen house condition. Incorporation of S. ilicifolium better accomplish the nutrient of host plant and significantly (p < 0.05) improved the plant growth parameters as well as in combination with P. aeruginosa the pathogenicity of root rotting fungi was significantly (p< 0.05) scavenged free radical (30.3%) produced in disease plant. A potential scavenging activity evaluated by H2O2 inhibition is 25.4% while, in ABTS assay 74% was recorded in the same treatment of S. ilicifolium + P. aeruginosa + M. phaseolina with respect to infected plant of M. phaseolina (12.2 % inhibition and 61.6 %). Both combinations were able to protect soybean plants against charcoal rot disease compared with check treatment. Indeed, S. ilicifolium and P. aeruginosa have been shown to induce resistance mechanism in plant by enhanced antioxidants scavenging potential of ROS outburst and detoxify the pathogenicity of M. phaseolina by accumulation of secondary metabolites.
Afshan Rahman, Syed Ehteshamul-Haque, Habiba, Farzana Korejo, Jahan Ara. (2021) BIOCONTROL POTENTIAL OF ENDOPHYTIC PSEUDOMONAS AERUGINOSA AND BROWN SEAWEED ENHANCES THE PLANT GROWTH AND ACTIVITY OF ANTIOXIDANT DEFENSIVE ENZYMES IN GLYCINE MAX AGAINST MACROPHOMINA PHASEOLINA, , Volume 18, Issue 1.
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