Agrobacterium vitis is a major grape pathogen causing gall formation on grape trunks at or above graft unions and grape-specific necrosis on roots. Recently, A. vitis strains from Galicia in the North-West of Spain, have been described. The crown gall disease in Galicia has not been adequately studied although the region has become a successful viticultural region. Crown gall susceptibility of grape appears to be determined by genetic make up of the plant and pathogen although it is not known which steps in cycle of disease induce the resistance. Among the strains from Galician vineyards tested in assays with V. vinifera cultivars. no difference in attachment was found.