First report in Hawai'i of Xanthomonas citri pv. mangiferaeindicae causing bacterial black spot on Mangifera indica.
Yasuhara-Bell J., Silva A. S. de, Alvarez A. M., Shimabuku R., Ko M.
Author Affiliation: Department of Plant and Environmental Protection Sciences, University of Hawai'i at Ma?noa, Honolulu, O'ahu, HI 96822, USA.
Plant Disease 97 :1244
Abstract : Bacterial black spot of mango caused by Xanthomonas citri pv. mangiferaeindicae (Xcm), is an economically important disease in tropical and subtropical areas. Immature mango fruit with black spots on the epidermis were collected in August 2012 from trees of mango cultivars Raposa and Pirie at a residence in Pukalani, Hawai'i, on the island of Maui. Similar symptoms were seen on a tree of the mango cv. Common (also known as 'Spanish' or 'Lahaina') at a nearby golf course. Mango fruit with black lesions, and leaves showing black lesions with yellow halos, were collected in August 2012 from trees of mango cv. Haden at a residence in Kaimuki, Hawai'i, on the island of O'ahu. Based on biochemical, molecular tests (PCR assays) and pathogenicity tests, the causal agent was identified as Xcm. This is thought to be the first report of bacterial black spot of mango in Hawai'i or anywhere in the United States.