Overexpression of the Chemosensory Protein CSP7 Gene Contributed to Lambda-Cyhalothrin Resistance in the Bird Cherry-Oat Aphid .

Lambda-cyhalothrin is one of the most important pyrethroids used for controlling wheat aphids. Extensive spraying of lambda-cyhalothrin has led to the development of high resistance to this pyrethroid in The mechanisms of resistance are complex and not fully understood. In this study, we found that a laboratory-selected strain of showed extremely high resistance to lambda-cyhalothrin and cross-resistance to bifenthrin and deltamethrin.

Involvement of chemosensory proteins in host plant searching in the bird cherry-oat aphid.

Chemosensory systems are considered to play an important role in host plant selection in herbivorous insects. However, few studies have focused on chemosensory proteins (CSPs) for aphid host-location mechanisms. The roles of CSPs in searching for different Poaceae species (wheat, barley, triticale, maize and sorghum) were tested in Rhopalosiphum padi, an important cereal pest.