SRA

Aphids (Hemiptera: Aphididae) are economically important pests with a world-wide distribution which cause great economic losses. The control of these aphid species has relied almost exclusively on the use of chemical insecticides Because of the short generation time and the high fecundity of most aphid species, coupled with the irrational use of pesticides in field, insecticide resistance of many aphid species are very complex. About 20 species have developed at least one known insecticide resistance. In order to control aphids efficiently, their mechanisms underlying resistance to insecticide needs to be clarified. Differential gene transcription in insecticide-resistant aphids has been frequently used to identify genes putatively involved in inherited metabolic resistance mechanism, although recent findings suggest that the differential expression of other transcripts may also contribute to insecticide tolerance. Less attention has been paid to the short term transcriptomic response of insects to xenobiotics, though this may lead to the discovery of novel molecular mechanism contributing to insecticide tolerance. Here, adults of three aphid species Acyrthosiphon pisum, Aphis gossypii, Aphis glycines exposed to different insecticides were analyzed by transcriptomic method. The detoxification enzymes of three aphids were identified and the effects of sublethal doses of three insecticides on three aphid species were examined. The responses to different insecticides of different aphid species were discussed.