Antioxidant defence system induced by seed priming with nanoparticles to restrain Fusarium wilt in cumin (Cuminum cyminum L.)

Abstract

An experiment comprising of persuade of seed priming with plant growth promoting rhizobacteria (PGPR) and nanoparticles was conducted to restrain fusarium wilt in cumin. Biochemical changes (chlorophyll stability index, membrane stability index, free amino acid, soluble protein, total phenols) and antioxidant enzymes (superoxide dismutase, guaiacol peroxidase, polyphenol oxidase and catalase) were determined during disease development stages and influenced by nanoparticle treatments. The chlorophyll stability index, free amino acids, soluble proteins, guaiacol peroxidase, polyphenol oxidase and catalase were found higher in seedling tissues of cumin treated with PGPR + chitosan nanoparticles. Membrane stability index, total phenol and superoxide dismutase enzyme activities were enhanced in chitosan nanoparticles + green silver nanoparticles treatment. Antioxidant enzymes activities were increased during disease development stages. The combination of chitosan nanoparticles either with green silver nanoparticles or PGPR for seed priming would be found better for boosting up the antioxidant/defence system to restrain Fusarium wilt infection in cumin.