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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 8, Special Issue 1 (2019)

Microbial degradation of second generation Neonicotinoid: Thiamethoxam in clay loam soils

Author(s):

Shivnam Rana and VK Gupta

Abstract:
Thiamethoxam is a second-generation neonicotinoid poses risk to non-target organism and have potential of leaching to contaminate underground water. Biodegradtion of thiamethoxam by microbial species is a biological way to reduce the contaminant. In the present paper, persistence of thiamethoxam in clay loam soil was studied for 56 days in laboratory conditions. <em>Bacillus</em> <em>aerophilus</em> strain IMBL 4.1 bacterium isolated from field soil and used to spike the soil sample containing different concentration (25, 50 and 100 mg kg<sup>−1</sup>) of thiamethoxam. <em>Bacillus</em> <em>aerophilus</em> strain IMBL 4.1 resulted in the active biodegradation of thiamethoxam. Half-life (<em>t</em><sub>1/2</sub>) and the correlation coefficient (R<sup>2</sup>) were studied and none of value was found more than 0.99 (R<sup>2</sup> values) so, total thiamethoxam residues did not follow the first-order kinetics neither in control nor in amended samples. From the study, it was demonstrated that <em>B. aerophilus</em> has potential for biodegradation of thiamethoxam in clay loam soils.

Pages: 294-298  |  1452 Views  494 Downloads

How to cite this article:
Shivnam Rana and VK Gupta. Microbial degradation of second generation Neonicotinoid: Thiamethoxam in clay loam soils. J Pharmacogn Phytochem 2019;8(1S):294-298.

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