Plant Protector Identified

摘要

Plants that survive an initial pathogen attack often develop enhanced resistance to subsequent infections. For example, prior infection of tobacco plants by tobacco mosaic virus (TMV) exhibit enhanced resistance elsewhere in the plant to subsequent challenge by TMV or other pathogens, which is termed systemic acquired resistance (SAR). The development of SAR requires the movement of a signal made in the primary infected tissue through the phloem to the distal systemic tissue.