First report of Phomopsis heveicola (anamorph of Diaporthe tulliensis) causing leaf blight of coffee (Coffea arabica) in China.
During March 2019, symptoms of leaf blight were observed on coffee (Coffea arabica) planted in Hainan and Yunnan Provinces in China. Disease incidence ranged from 10 to 20% in the affected coffee plantings, and in extreme cases, 45% out of 200 trees were affected. Symptomatic leaves initially exhibited small, reddish-brown, round or oval spots on the tip of leaves, subsequently expanding in size along the leaf margin. Infected leaves eventually became wilted and dry. The causal pathogen was isolated and identified as Phomopsis heveicola based on morphological, molecular and pathogenicity analyses. The sequences of ITS (MN393590), TEF-1a (MN399885) and β-tubulin gene (MN399886) were submitted to GenBank. This is thought to be the first report of P. heveicola causing leaf blight of coffee in China.