Grapevine trunk disease in German viticulture: occurrence of lesser known fungi and first report of Phaeoacremonium viticola and P. fraxinopennsylvanicum

Thirteen species of lesser known wood inhabiting fungi living on grapevine (Vitis vinifera) and/or in the vicinity of vineyards are presented with respect to systematics, life strategy and symptoms, host range, geographic distribution, transmission and occurrence on Vitis, identification, and diagnosis. Sampling has been performed during a three-year-survey covering nurseries, vineyards, and neighboring fruit trees in the viticultural area of southern Palatinate, Germany. The possible pathogenic significance and the relation to grapevine trunk diseases are discussed. The following species are reported for the first time in Germany: Cadophora luteo-olivacea, C. fastigiata, Collophora paarla, Coniochaeta hoffmannii, Eucasphaeria capensis, Phomopsis cotoneastri, and the Esca-related Phaeoacremonium viticola and P. fraxinopennsylvannicum. Eucasphaeria capensis and Phomopsis cotoneastri are reported for the first time from Vitis worldwide.