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The present book provides a general description of the different RNA silencing pathways in plants, including proteins involved, TGS and PTGS pathways, role in antiviral defense and the counter-defensive mechanism of viral suppressors. It describes the way small RNA is produced and acts to silence genes, its likely origins in defense against viruses, and also its potential to improve plants. The book is intended to help college students, teachers, researchers and other readers interested in plant physiology and RNA biology better understand the different mechanisms in which RNA silencing regulates gene expression in plants.
