Microrna-Mediated Resistance To Plant Viruses

Micrornas (mirnas) are 20-24 nucleotide small rnas which are processed from nuclear-encoded transcripts. mirnas control the expression of target transcripts by cleaving or translational inhibition of the target rnas. artificial micrornas (amirnas) are modified endogenous mirna precursors in which the mirna: mirna duplex is replaced with sequences to silence a target gene. amirnas are used as new transformation techniques in eukaryotes and have been proven to be more effective in specificity and stability than other rna-mediated gene silencing methods. amirna-based antiviral defense is an effective and new approach to engineer resistance to plant viruses. here, we summarize the role of mirnas in resistance to plant viruses