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Activating Mango Fruit Defence to Anthracnose Disease

Zainuri, D.E. and Dann, E.K. and Coates, L.M. and Wearing, A.H. (2003) Activating Mango Fruit Defence to Anthracnose Disease. In: Australasian Postharvest Horticulture Conference, 1-3 October 2003, Carlton Crest Hotel, Brisbane.

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Abstract

The fungus causing anthracnose disease in mango, Colletotrichum gloeosporioides, (C g.), infects immature fruit early in the season, then enters a long latent phase. After harvest, when fruit start to ripen, the latency breaks and the fungus ramifies through the peel and pulp tissues causing black disease lesions. The breaking of pathogen latency in ripening mango fruit has been correlated with decreasing concentrations of the endogenous antifungal resorcinol compounds (Droby et al., 1986). The level of these antifungal resorcinols vary among mango cultivars (Droby et a1 , 1986). Controlling diseases by managing natural resistance of fruit to fungal attack could minimize the use of pesticides, which have become of major public concern on health and environmental grounds.

The plant resistance activator benzo(l,2,3)thiadiazole-7-carbothioic acid S-methyl ester (trade name Bion®) has been widely reported as an effective inducer of systemic resistance. For example, Bion® was reported to induce pathogenesis-related proteins (PR proteins) and stimulate plant defence in peas (Dann and Deverall, 2000) and roses (Suo and Leung, 2001). However, until now, there is no information about the role of Bion® in activation of mango (cv. Kensington Pride) fruit resistance to anthracnose disease. The aim of this research is to determine the effect of resistance activators on defence responses of mango fruit to anthracnose disease.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Reproduced with permission of the Convenor and Co-editor of the Australasian Postharvest Horticulture Conference 2003.
Keywords:Anthracnose; mango; resistance activators; natural defence; Bion®.
Subjects:Plant pests and diseases > Individual or types of plants or trees
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit > Stonefruit
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Deposited On:28 Jun 2004
Last Modified:01 Apr 2011 06:45

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