Grapevine Trunk Diseases in Tokaj Wine Region and the development of potential biocontrol agents against GTD pathogens in Hungary

Grapevine trunk diseases (GTD) are amongst the most important diseases in vineyards worldwide. Very limited information is available about the occurrence of pathogens causing GTD in Hungarian wine regions overall and especially in Tokaj Wine Region nowadays. Diplodia seriata is the most common pathogen in the Tokaj Wine Region (Kovács et al, 2013).Currently there is no effective fungicide, which could be use against GTD pathogens, but previously used the sodium-arsenite for the treatment in Western-Europe, but it was banned, because it has carcinogenic and toxic effect on the environment. The Trichoderma strains are using as biopesticide since 1930. Mycoparasitic Trichoderma species are able to destroy phytopathogenic fungi and different species are applying as biocontrol agents on different crops against plant pathogenic fungi. The aims of this study were (i) the detection and identification of fungal GTD pathogens and other endophytic fungi from the symptomatic and dead trunks, (ii) the analyses the microflora of the symptomatic and asymptomatic of Chardonnay plants, and (iii) the test of Trichoderma sps. collected from asymptomatic plants in the Tokaj Wine Region as potential biocontrol agents