Physiological and biochemical changes induced by accumulated mangiferin in Mangifera indica.
Chakrabarti D. K., Singh A., Singh K.
Author Affiliation: Department of Horticulture, N.D. University of Agriculture and Technology, PO Kumarganj, Faizabad, 224?229 Uttar Pradesh, India.
Journal of Horticultural Science 65 : 731-737
Abstract : Aqueous solutions (40 p.p.m.) of mangiferin (1,3,6,7-tetrahydroxyxanthone-C2-?-D-glucoside), were sprayed on leaves and shoots of 5-year-old mango cv. Amrapali plants and changes within plant tissues studied after 72 h. Mangiferin at high concentrations suppressed the activity of peroxidase, catalase, ?-amylase and IAA-oxidase. Polyphenoloxidase and invertase showed increased activity. Mangiferin accumulation increased the rate of photosynthesis but reduced those of transpiration and respiration. Mangiferin treatment increased the contents of chlorophyll, carbohydrates, total N, protein N, nucleic acids and IAA. The contribution of endogenous mangiferin to plant malformation syndromes is discussed.