Identification and Characterization of White Mold Disease (Sclerotinia sclerotiorum) in Globe Artichoke

Globe artichoke (Cynara scolymus L.) is an economically important plant that is cultivated over 30 countries in the world. In 2017, wilting and lodging symptoms were observed on globe artichoke plants in three locations (Serik-Gebiz, Serik-Karadayı and Gazipaşa-Bakılar) in the Western Mediterranean Region of Turkey. To determine the cause of the symptoms, samples from necrotic tissues were cultured in vitro. Based on the morphological and ITS sequences, the causal agent was identified as Sclerotinia sclerotiorum (Lib.) de Bary. Pathogenicity test was conducted using cv. Bayrampaşa in the greenhouse. Three isolates (Ser3, Ser4 and Gzp3) of S. sclerotiorum were characterized on the basis of mycelial compatibility, colony radial growth, sclerotia formation, sclerotia size, sclerotia weight and sclerotia number. Virulence of the isolates was also determined using detached leaf technique. No mycelial compatibility was detected among the isolates. Significant (P

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