Mangiferin (1,3,6,7-tetrahydroxyxanthone-C2-?-D-glucoside), a phenolic metabolite of mango (Mangifera indica L.), affects germination of spore of Fusarium sp.
Ansari M. W., Nailwal T. K., Gomathi A., Singh A. K., Bains G., Shukla A., Chaube H. S., Singh U. S., Pant R. C.
Author Affiliation: Department of Plant Physiology, College of Basic Sciences and Humanities, G. B. Pant University of Agriculture and Technology, Pantnagar 263 145, India.
Journal of Plant Biology 32 : 155-159
Abstract : Malformation is a destructive disease of mango. Fusarium sp. was isolated from malformed as well as healthy tissues of mango cultivars growing in different geographical regions. The concentration of mangiferin (1,3,6,7-tetrahydroxyxanthone-C2-?-D-glucoside) was higher in malformed tissues (500, 625, 530 µg/g fresh weight in malformed floral tissues and 788, 840, 800 µg/g fresh weight in malformed vegetative tissues, respectively) compared to the healthy tissues (275, 310, 290 µg/g fresh weight in healthy floral tissues and 410, 385, 450 µg/g fresh weight in healthy vegetative tissues, respectively) of mango cultivars Mallika, Dashehari and Baramasi. Mangiferin inhibited germination of Fusarium sp. spores and inhibitory response was maximum at its higher concentrations. The results revealed that higher concentration of mangiferin in diseased tissues may lower the level of Fusarium sp. infection inside the diseased tissues as it was found to inhibit the germination of spores and impede the normal growth of Fusarium sp.