Synthesis of Gossypium hirsutum ‐derived silver nanoparticles and their antibacterial efficacy against plant pathogens

A stem extract ofGossypium hirsutum was efficiently used for the synthesis of silver nanoparticles (AgNPs). The AgNPs showed antimicrobial activity against plant pathogens. Malvaceae and Brassicaceae family crops are economically important; however, their production has been markedly decreased in recent years due to various plant pests. Hence, the search for novel classes of efficient biological approaches continues due to unavailability of precise pesticides. The present study was designed to synthesize, characterize and evaluate the efficacy of silver nanoparticles (AgNPs) obtained using stem extract ofGossypium hirsutum (cotton plant) against plant pathogensXanthomonas axonopodis pv. malvacearum andXanthomonas campestris pv. campestris. Biosynthesized AgNPs were characterized using UV –visible spectrophotometry, Dynamic Light Scattering, Scanning Electron Microscopy combined with energy‐dispersive X‐ray analysis and Fourier transform infrared spectroscopy. The synthesized AgNPs were spherical in shape with size ranging from 20 to 100 nm. The characterized AgNPs were invest igated for their efficacy against bacterial plant pathogens using the paper disc method.In vitro studies with two concentrations of AgNPs (50 and 100  μg mL−1) showed zone of inhibition 11.0  ± 1.0 and 12.3 ± 0.5 mm forX. axonopodis pv. malvacearum and 9.7  ± 0.6 and 15.33 ± 1.0 mm forX. campestris pv. campestris. Furthermore, the AgNPs exhibited strong antioxidant activity, and...
Source: Applied Organometallic Chemistry - Category: Chemistry Authors: Tags: FULL PAPER Source Type: research