First report of Erwinia amylovora on Crataegus monogyna and Pyrus pyraster in Bulgaria
Typical symptoms of fireblight were observed in late June 1998 on Crataegus monogyna and Pyrus pyraster in the region of Plovdiv, in Bulgaria. Symptoms on Crataegus monogyna included shepherd's crook shoots, necrotic flowers and fruitlets, and the presence of dried amber ooze droplets. On Pyrus pyraster only infected shoots were observed. The presence of Erwinia amylovora (EPPO A2 quarantine pest) was confirmed by cultural characteristics, biological test, serology and PCR. According to the authors, this is the first report of fire blight on C. monogyna and P. pyraster in Bulgaria. It is also recalled that in Bulgaria, over a period from 1989 to 1993, E. amylovora has been found on Cydonia oblonga, Pyrus communis, Mespilus germanica and Malus sylvestris (see also EPPO RS 512/06 (1991), 95/199, 98/004).
Sources
Bobev, S.G.; Crepel, C.; Maes, M. (1998) First report of Erwinia amylovora on Crataegus monogyna and Pyrus pyraster in Bulgaria.
Plant Disease, 82(11), p 1283.