First report of fire blight caused by Erwinia amylovora on crabapple (Malus floribunda) in Turkey.
Fire blight is a destructive and sporadic disease of crabapple (M. floribunda) and other plants in the Rosaceae in many areas of the world. From 2007 to 2010, sudden wilting, shriveling of flowers, leaf and shoot blight, and cankers with brown discoloration on twigs of crabapple were observed in residential landscapes of Konya Province, Turkey. Disease incidence ranged from 20 to 40% in different areas of this province, and surveys showed that ∼163 ha were infested. Based on biochemical, physiological, molecular tests (PCR assay) and pathogenicity tests, the causal agent was identified as E. amylovora. This is thought to be the first report of E. amylovora on crabapple in Turkey.