Erwinia reported on Hazel
In central Italy a new bacterial disease of hazel (Corylus avellana) has been reported.
While disease symptoms resemble very closely those of Xanthomonas campestris pv. corylina (EPPO A2 list) and Pseudomonas syringae pv. avellanae, cultural, physiological and biochemical tests indicated a pathogen belonging to the 'true erwiniae' group with partial similarities to Erwinia amylovora (EPPO A2 list) and E. rubrifaciens. Further studies on the biology and epidemiology of the pathogen are currently being carried out.
Sources
Varvaro, L.; Costa, A.; Balestra, G.M. (1990) A new bacterial disease of Corylus avellana.
Proceedings of the 8th Congress of the Mediterranean Phytopathological Union, 469-471.