First report of Botrytis leaf blight on lily (Lilium longiflorum) caused by Botrytis cinerea in Beijing, China.
During the winter of 2015, lily (Lilium longiflorum) plants exhibited leaf blight symptoms in greenhouses of a lily farm at Changping District, Beijing, China. The disease resulted in serious loss of lily production in the farm, and approximately 10-15% of plants were destroyed. The infection initially manifested as irregular lesions on the leaves, which gradually expanded into greyish-brown blight and frequently involved the entire leaf. Severely infected leaves were distorted, covered with grey mycelium and conidia. Flower buds had no lesions or sporulation. The causal pathogen was isolated and identified as Botrytis cinerea based on morphological, molecular and pathogenicity analyses. This is thought to be the first report of B. cinerea causing leaf blight of L. longiflorum in Beijing, China.