Nanoscience and Technology

Biography

Biography: Dr. Abhishek Mathur

Abstract

Plant growth promoting rhizobacteria (PGPRs) play a vital role in maintaining soil fertility and plant health. The microbes residing in the soil are beneficial for the growth of crops in terms of vegetative and reproductive growth are known as plant growth promoting rhizobacteria (PGPRs). They can act as biofertilizers, pesticidal and insecticidal agents. Simultaneously, the PGPRs increase the resistance to biotic and abiotic stress. These are effective growth modulators for the crop as they secrete novel metabolites and growth molecules that enable the crop to sustain in adverse and stress conditions. These molecules also induce systemic resistance and anti- pathogenic effect against the soil borne infections. Several substances produced by antagonistic rhizobacteria have been related to pathogen control and indirect promotion of growth in many plants, such as siderophores and antibiotics. The PGPRs (growth promoting action, pesticidal and insecticidal action) were found to have positive PGPR traits viz. IAA production, siderophores production, Cytokinin and HCN production. The molecules and secondary metabolites secreted by such PGPRs are beneficial in terms of growth promotion and defensive properties. These metabolites can be utilized further to synthesize nanoparticles after combination with in organic metallic ion. These fused nanoparticles are found to have more significant and beneficial aspects in agriculture. Nanoparticles are 100 mm or less, nanoparticles synthesize by a biogenic enzymatic process. Microorganisms such as bacteria, actinomycetes, and fungi play an important role in the treatment of toxic metal through reduction of metal ions and are considered as potential Nano factories. These microbes and their secondary metabolites are being used for the preparation of biogenic nanoparticles. These nanoparticles are very cost effective and are significant in terms of application potential. The present study will reveal the preparation; formulation and application of biological nanoparticles based on microbes and their metabolites for their growth promoter and defensive action properties on selected crops for sustainable agricultural productivity.