Diplodia theobromae associated with sudden decline of mango in the Sultanate of Oman.
Al-Adawi A. O., Deadman M. L., Al-Rawahi A. K., Khan A. J., Al-Maqbali Y. M.
Author Affiliation: Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, PO Box 34, Al Khod 123, Oman.
Plant Pathology 52 :419
Abstract : In 1999, a new disease of mango appeared, affecting up to 60% of the trees in parts of the Al Batinah region in Oman. Trees were characterized by gummosis from the trunk, wilting and eventual browning of leaves on a single branch. As the infection progressed, tree death occurred, approximately 6 months from the first appearance of the symptoms. Damage caused by a bark beetle (Cryphalus scabercollis) was frequently associated with the disease. Pycnidia were observed in the lesions on the infected bark, and the pathogen Diplodia theobromae [Botryodiplodia theobromae] (IMI Reference W6341) was isolated from the infected trees.