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Dothiorella dominicana, a new mango pathogen in South Africa.

Darvas, J. M.;

Phytophylactica Year: 1991 Vol: 23 Issue: 4 Pages: 295-298 Ref: 9 ref.

1991

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Dothiorella dominicana, a new mango pathogen in South Africa.

In a survey in the eastern Transvaal, South Africa during 1988-90, D. dominicana was found to be associated with blossom blight, branch die-back, fruit stem-end rot and fruit rot of mango. Initial symptoms of flower infection are a slight wilt followed by rapid drying out and partial or complete death of the inflorescence. The pathogen may continue to grow into the wood behind the flower, causing branch die-back, and also causes postharvest fruit stem-end rot and is frequently isolated together with Colletotrichum gloeosporioides [Glomerella cingulata] from postharvest anthracnose lesions. Flower symptoms have been known for many years in South Africa and the disease was described as blossom blight. The pathogen overwinters in pycnidia formed in dead wood. No sexual stage of the fungus was found in nature, nor could it be induced in culture. This is the first report of D. dominicana on mangoes in South Africa.