Photo 1. Shoot blight of mango, caused by Colletotrichum gloeosporioides. Some of the spots have joined together destroying large areas of the leaves, typical for a "blight" disease.
Photo 2. Dark spots, many enlarging and joining together, of mango anthracnose, Glomerella cingulata. The fungus infects the skins and later develops in storage. Orange-pink spore masses develop in the centres of these areas.
Photo 3. Mangoes for sale at a market showing dark spots of anthracnose, Colletotrichum gloeosporioides.
Photo 4. Scolecostigmina mangiferae leaf spots on underside of a mango leaf; they are small, dark, irregular spots.
Photo 5. Scolecostigmina leaf spots on the top side of a mango leaf, small, dark, irregular spots with light green margins. Compare with anthracnose.
Mango anthracnose, mango blossom blight
Glomerella cingulata (it also has the name of Colletotrichum gloeosporioides). Glomerella is the sexual stage of the fungus, and Colletotrichum the asexual stage. The disease is often referred to as "anthracnose" of mango. The word anthracnose means "coal", so fungi that produce dark spots are often given this name. Another fungus also causes leaf spots: Scolecostigmina mangiferae (see FactSheet no. 325).
AUTHORS Helen Tsatsia & Grahame Jackson
Photos 1-3,5 Kohler F, Pellegrin F, Jackson, G, McKenzie E (1997) Diseases of cultivated crops in Pacific island countries. South Pacific Commission. Pirie Printers Pty Limited, Canberra, Australia. Photo 4 McKenzie E (2013 Scolecostigmina mangiferae PaDIL - (http://www.padil.gov.au).
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
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