Role of Silver Nanoparticle Against Plant Pathogens

Biogenic synthesis of inorganic nanoparticles has been emerging as an important branch of nanobiotechnology. Biogenic silver nanoparticles (AgNPs) are proved to be potential antimicrobial agents against an array of pathogens. Aqueous extract of shade dried leaves of Conyza ambigua was used for the synthesis of AgNPs. The UV-VIS absorption spectroscopy, SEM, XRD were carried out to assess the formation AgNPs. SEM image divulges that AgNPs are quite polydispersed, the size ranging from 56 nm. The above AgNPs were effective against A.niger, A.flavus and Sclerotium rolfsii. This study move towards biogenic synthesis of AgNPs using dried biomass appears to be cost effective, eco-friendly to that of conventional methods of nanoparticles synthesis.