Grapevines are affected by a number of fungal pathogens world-wide and require intensive fungicide spray regimes for sustainable crop production [70,71]. Major improvement efforts have been directed toward enhancing fungal-disease resistance in table and wine grape cultivars [69]. A number of pathogenes is-related (PR)proteins were screened for their response to fungal pathogen infection. Genetically modified ‘Neo Muscat’ and ‘Pusa Seedless’grapevines constitutively expressing rice chitinase genes exhibited enhanced resistance to anthracnose and powdery mildew[