Biodegradation of the Neonicotinoid Pesticide, Spiromesifen Using the Natural Bacterial Isolate, Serratia sp.

Abstract

Background: Application of pesticides in modern agricultural practices is unavoidable which helps to
increase the productivity through the reduction of pest attack. Simultaneously, enduring persistence of
pesticides is the major issue in terms of environmental and health hazards. Hence, there is an urge to
discover an ideal strategy to conquer this trouble.
Objectives: The present study has been designed to isolate a bacterial strain effectively degrading
spiromesifen and to test its efficiency of degradation.
Materials and Methods: The bacterial strain was isolated from soil samples collected from agricultural
fields after serial dilution. Based on biochemical tests, it was identified. In 2000, 3000, 4000 and 5000
ppm concentrations of spiromesifen in minimal broth, parameters like pH, CO2 released, ammonia
produced and biomass were determined for every 48 hours for ten days.
Results: The selected bacterial strain was identified as Serratia sp. At the time of biodegradation of
spiromesifen by Serratia sp. significant level of variations were noted in the tested parameters.
Conclusion: From the above findings it can be concluded that the isolated bacterial strain could be used
in the treatment of pesticide contaminants in agricultural fields.