Y‐satellite RNA (Y‐sat) of cucumber mosaic virus upregulates the expression aphid ABCG4 gene, which promotes wing formation. We used virus‐induced gene silencing (VIGS) to prevent wing‐induction mechanism Y‐sat and thus inhibited Of aphids on plants with VIGS , only about 30% had wings, 60–70% winged were small likely impaired in flying ability. In addition, we showed that double‐stranded RNAs ...