Grapevine (Vitis spp.) decline and death in Rio Grande do Sul can result from biotic and abiotic causes. Several plant pathogenic fungi cause the first group. The objective of this research was to report the main fungal species associated with plants showing symptoms of decline and death in the "Serra Gaúcha" region, Southern Brazil. The incidence of disfunction in 107 samples from different cultivars and growing regions was higher in American cultivars of V. labrusca (Bordô, Concord and Niagara), than in European grapes (Vitis vinifera). The species of fungi found were: Cylindrocarpon sp., Phaeoacremonium sp., Verticillium sp., Botryosphaeria sp., Fusarium oxysporum f.sp. herbemontis, Graphium sp. and Cylindrocladium sp.
