Coffee dieback caused by Lasiodiplodia pseudotheobromae in Brazil.
In 2019, in two growing areas (0.3 and 1 ha) of coffee (Coffea arabica) cv. Catuaí 144, in Brejão, Pernambuco, Brazil, 2% of 3-year-old plants showed dieback symptoms. Infected stems had necrotic lesions and black pycnidia on the surface. The causal pathogen was isolated and identified as Lasiodiplodia pseudotheobromae based on morphological characteristics, molecular data (sequences of the region of ribosomal DNA (ITS-rDNA) and translation elongation factor 1-α (TEF1-α)) and pathogenicity test. This is thought to be the first report L. pseudotheobromae causing dieback on C. arabica in Brazil and in the world.