Flavonoids from shoots and roots of Trifolium repens (white clover) grown in presence or absence of the arbuscular mycorrhizal fungus Glomus intraradices
- Ponce, María Alejandra
- Scervino, Jose Martin
- Erra Balsells, Rosa
- Ocampo, Juan A.
- Godeas, Alicia Margarita
DOIAbstract
White clover (Trifolium repens) plants were grown in the presence or absence of the arbuscular mycorrhizal fungus Glomus intraradices. Flavones, 4?,5,6,7,8-pentahydroxy-3-methoxyflavone and 5,6,7,8-tetrahydroxy-3-methoxyflavone, as well as two flavones 3,7-dihydroxy-4´-methoxyflavone and 5,6,7,8-tetrahydroxy-4?-methoxyflavone never previously reported in plants, were isolated. The known 3,5,6,7,8-pentahydroxy-4´-methoxyflavone, 2´,3´,4´,5?,6?-pentahydroxy-chalcone, 6-hydroxykaempferol, 4?,5,6,7,8-pentahydroxyflavone and 3,4?-dimethoxykaempferol were also obtained. Analysis of extracts obtained from roots and shoots revealed that the compositions of the flavonoid mixtures varied with growing conditions. Quercetin, acacetin and rhamnetin accu...
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