Biogenic Gold Nanoparticle Supplementation to Plant Beneficial Pseudomonas monteilii was Found to Enhance its Plant Probiotic Effect

Current Microbiology
Jishma PanichikkalE K Radhakrishnan

Abstract

Rhizosphere provides unique space for intensive chemical conversation between plant and microorganisms. The common rhizobacterial mechanisms which have been demonstrated to promote plant growth include production of phytohormones, nitrogen fixation, synthesis of 1-aminocyclopropane-1-carboxylate deaminase (ACC deaminase) and phosphate solubilization. The microbially produced phytohormone indole-3-acetic acid (IAA) is considered to have significant role in interaction between plant and bacteria. Hence any substance with modulatory effect on rhizobacterial IAA production can expect to have its impact on plant-microbe interaction. With the advent of nanotechnology, nanoparticles are being used for diverse applications. However, applications of nanotechnology in agriculture have not been studied in detail. In the study, rhizospheric Pseudomonas monteilii was selected to investigate the concentration-dependent effect of biogenic gold nanoparticles (AuNPs) on its IAA production. For this, AuNPs synthesized by Bacillus subtilis SJ15 were characterized by UV-Vis spectroscopy, FT-IR, TEM and EDS. The results showed AuNPs to have spherical, hexagonal and triangular shapes with a size range of 12-32 nm and absorption peak at 545 nm. Furth...Continue Reading

References

Dec 14, 2002·Science·Yugang Sun, Younan Xia
May 15, 2003·Plant Physiology·Travis S WalkerJorge M Vivanco
May 5, 2005·Applied and Environmental Microbiology·Johan H J Leveau, Steven E Lindow
Mar 3, 2010·Annual Review of Plant Biology·Yunde Zhao
Jan 1, 2012·Scientifica·Bernard R Glick
Jun 7, 2015·Journal of Photochemistry and Photobiology. B, Biology·Roshmi ThomasE K Radhakrishnan

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Citations

Nov 6, 2020·Biofouling·Jishma Panichikkal, Radhakrishnan Edayileveetil Krishnankutty

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Methods Mentioned

BETA
transmission electron microcopy

Software Mentioned

Origin Pro7 SRO

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