The intestinal Stenotrophomonas maltophilia ZG-GX enhances the resistance of Spodoptera frugiperda to beta-cypermethrin and decreases the amino acid levels

Abstract

Spodoptera frugiperda is an invasive organism that is highly tolerant to chemical pesticides and causes severe losses to agriculture. Studying the mechanism behind which Spodoptera frugiperda gains resistance to pesticides is important for agricultural production. Among the mechanisms discussed, the relationship between gut microorganisms of Spodoptera frugiperda and their resistance to pesticides is largely elusive. In this study, we demonstrated that Stenotrophomonas maltophilia ZG-GX isolated from the intestine of Spodoptera frugiperda increased the resistance of Spodoptera frugiperda to beta-cypermethrin and has strong potential to degrade beta-cypermethrin. Further, we compared the difference in its mechanism with beta-cypermethrin-induced resistance. It is of great significance for the protection of the ecological environment. The study lays the foundation for a better understanding of the mechanism of insect resistance to pesticides and provides clues for the development of new control strategies.