Differences in the chemical constituents of Mangifera indica, infected with Aspergillus niger and Fusarium moniliforme.
Ghosal S., Biswas K., Chattopadhyay B. K.
Author Affiliation: Banaras Hindu University, Varanasi-5, India.
Phytochemistry 17 : 689-694
Abstract : The acetone extractives of healthy mango leaves, twigs, flowers and fruits and those of the corresponding parts infected with A. niger and F. moniliforme [Gibberella fujikuroi] were processed separately for neutral, phenolic, carboxylic and basic constituents. The natural occurrence of 2 polyketideshikimate-derived depsides is reported for the first time. Additionally, some xanthones, flavonoids, triterpenes and amino acids, not encountered before in mango, are reported. The co-occurrence of mangiferin, 1,3,6,7-tetra- and 1,3,5,6,7-pentaoxygenated xanthones and the quantitative variation of the latter 2 compounds with plant growth and during fungal infection were biochemically significant. The 2 pathogenic fungi secreted a number of mycotoxins in different parts of the host during vegetative and flowering periods.