The gene, previously reported to facilitate escape from infection by Botrytis cinerea and Didymella applanata, was shown in tests with mycelial inoculations of wounded canes to confer a form of resistance which was evident for a long period after the establishment of infections by these pathogens. It also contributed to the resistance of fruit to B. cinerea and of canes to Leptosphaeria coniothyrium. Alternative hypotheses to explain these observations are discussed: 2 based upon its possible genetic linkage with a resistance gene(s) and 1 based upon its possible pleiotropic effects.