First report of Clavibacter michiganensis subsp. sepedonicus infecting sugar beet in Russia.
In 2017, a new bacterial disease was observed in sugarbeet plants in Krasnodar region, Russia. The disease caused severe wilt of plants. Infected young petioles were curled and whole leaves were distorted. Vascular tissues in the tap root cut longitudinally were brown to deep brown. The causal pathogen was isolated and identified as Clavibacter michiganensis subsp. sepedonicus based on molecular, serological and pathogenicity analyses. This is thought to be the first report of C. michiganensis subsp. sepedonicus causing bacterial disease of sugarbeet in the Russian Federation.