Figure 5.

Susceptibility of Panonychus citri to fenpropathrin after silencing of PcE1, PcE7 and PcE9 by RNA interference. (A) Silencing efficiency of PcE1, PcE7 and PcE9 after P. citri were investigated 48 h after the gene silencing treatment; (B) The mortalities of the citrus red mites were investigated after the fenpropathrin treatment at the concentration of LC₅₀ (4.519 mg/L). Results were mean ± SE of four biological replication (n = 4). The asterisk on the vertical bars indicate significant differences in the mRNA level of the three genes or the mortalities between control and treatment (Student’s t-test, * p < 0.05 and ** p < 0.01).