RNA interference (RNAi) is an evolutionarily conserved, homology dependent gene silencing mechanism; an area of upfront basic research, further gaining importance in applications like development of virus resistant transgenics. To explore the possibility of transgenic resistance to the Tomato leaf curl virus, a constraint in tomato production, sub-region of viral replicase gene (truncated rep) was chosen as target for RNA based silencing. In silico analysis of rep gene with siRNA design algorithms and appraisal of rep mRNA, disclosed potent siRNAs and the accessibility of mRNA for gene...