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Comparative analysis of defence responses Triticum aestivum L in response to the endophytic Pseudomonas aeruginosa PM389 and the non-host microbial pathogens Erwinia carotovora and Fusarium monaliforme

In the present study, Pseudomonas aeruginosa PM389 has been studied for comparing the defense responses in wheat plant against non-host pathogens Fusarium monaliforme and Erwinia caratovora. The comparative studies of defense enzymes produced on pretreatment of plants in the presence and absence of PM389 were also studied. Apart from it, disease incidence as well as plant growth promotion under in vitro and pot condition was recorded in the presence or absence of PM389 on challenging wheat plant with the non-host pathogen. Induction in all defense enzymes was observed on pretreatment of the plant with PM389 before pathogenic challenge with non-host. It was suggested that PM389 can generate induced systemic resistance in plants against pathogens. A less pathogenic population was recorded in the presence of PM389 than in its absence. In addition, it also showed plant growth promotion in the wheat under in vitro and pot studies. It was observed that PM389 was more effective against fungal pathogen than bacterial pathogen in both plant growth promotions as well as in decreasing disease incidence. Thus, PM389 can serve as a potential candidate as biofertilizer and biocontrol agent for non-host pathogens as well as having chances of cross-infection among various crops.