First report of fire blight caused by Erwinia amylovora on rosehip (Rosa canina) in Turkey.
During the summer of 2008 and 2010, leaf and shoot blight, wilting of the tips of young infected shoots, and cankers with brown discoloration on twigs were observed on six dog rosehip (R. canina) plants from four private orchards in Eregli district of Konya Province, Turkey. Disease incidence was estimated to be approximately 0.5% on rosehips over 2 years within all survey areas, and surveys showed that ∼4 ha were infested. Isolates obtained from diseased leaf and shoot tissues produced light cream, levan-positive colonies on nutrient sucrose agar medium after a 2-day incubation at 25°C. The bacterial strains were identified as E. amylovora based on biochemical, physiological and molecular tests. This is thought to be the first report of E. amylovora on rosehip in Turkey.