Core RNAi Machinery and Sid1, a Component for Systemic RNAi, in the Hemipteran Insect, Aphis glycines.

ABSTRACT: RNA interference (RNAi) offers a novel tool to manage hemipteran pests. For the success of RNAi based pest control in the field, a robust and systemic RNAi response is a prerequisite. We identified and characterized major genes of the RNAi machinery, Dicer2 (Dcr2), Argonaute2 (Ago2), and R2d2 in Aphis glycines, a serious pest of soybean. The A. glycines genome encodes for at least one copy of Dcr2, R2d2 and Ago2. Comparative and molecular evolution analyses (dN/dS) showed that domain regions of encoded proteins are highly conserved, whereas linker (non-domain) regions are diversified. Sequence homology and phylogenetic analyses suggested that the RNAi machinery of A. glycines is more similar to that of Tribolium casteneum as compared to that of Drosophila melanogaster. We also characterize

SUBMITTER: Bansal R 

PROVIDER: S-EPMC3588070 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature