NBR1 and viral infectious disease: Taken together, these observations provide solid experimental evidence that virus infection in oilseed rape triggers the production of secondary vasiRNAs from numerous coding genes, and that many of these vasiRNAs are competent to promote sequence-specific cleavage of target mRNAs encoded by the same gene family (e.g., CABBP1) or by other genes (e.g., NBR1).