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Streptomyces-mediated synthesis of silver nanoparticles for enhanced growth, yield, and grain nutrients in chickpea

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Relation http://oar.icrisat.org/12023/
https://doi.org/10.1016/j.bcab.2022.102567
 
Title Streptomyces-mediated synthesis of silver nanoparticles for
enhanced growth, yield, and grain nutrients in chickpea
 
Creator Sambangi, P
Gopalakrishnan, S
 
Subject Chickpea
 
Description In the present study, two plant growth promoting rhizobacteria (PGPR) strains of Streptomyces
griseus (KAI-26 and MMA-32) and one PGPR strain of S. albus (KAI-27) were screened for their
ability to bio-synthesize silver nanoparticles (AgNPs) and evaluated for their growth promotion in
chickpea. The formation of Streptomyces-mediated biogenic AgNPs was confirmed through
UV–visible spectrophotometer, Dynamic Light Scattering (DLS), Zetapotential, Fourier Transforms
Infrared (FTIR) spectroscopy and Transmission Electron Microscope (TEM) analysis. In
greenhouse, the biogenic AgNPs followed by Streptomyces strains significantly increased plant
growth promoting traits and nitrogen fixation over the untreated plants. Defense enzymes,
namely ascorbate peroxidase, catalase, phenylalanine ammonia lyase, polyphenol oxidase and
superoxide dismutase were also found higher in the selected Streptomyces and biogenic AgNPs
treated chickpea plants. The bio-fortification studies carried out by inductively coupled plasmaoptical
emission spectroscopy (ICP-OES) revealed a significant enhancement of Fe, Zn, Mn and K
contents in the harvested chickpea grains that were treated with the Streptomyces strains and
biogenic AgNPs over the untreated plants. The results of the present study, further aids in the
efficient utilization of the selected PGPR and their biogenic AgNPs as better delivery agents in
agriculture.
 
Publisher ELSEVIER
 
Type Article
PeerReviewed
 
Identifier Sambangi, P and Gopalakrishnan, S Streptomyces-mediated synthesis of silver nanoparticles for enhanced growth, yield, and grain nutrients in chickpea. Biocatalysis and Agricultural Biotechnology (TSI), 47 (102567). pp. 1-12. ISSN 1878-8181