Abstract: The present invention provides a method for site-directed integration of DNA-sequences into the genome of plants via homologous recombination, by transforming said plants using the DNA-transfer system of Agrobacterium, in which the transforming DNA comprises in its most simple form a region homologous to the target locus, as well as a region which is different from the target locus either next to one or between two T-DNA borders.

Abstract: New methods are provided for the identification and purification of proteins from plants with an inhibitory effect on pathogens and/or pests, such as insects, nematodes, fungi, and bacteria, using a combination of non-denaturing protein fractionation techniques on leaf-extracts of plants which were treated to develop induced resistance and an antipathogenic assay. Also provided are antifungal proteins obtained by the method, recombinant nucleotide sequences encoding the proteins, as well as plants with reduced susceptibility to fungi due to production and desired targeting of the proteins in the plant.