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Isoschaftoside, a C-glycosylflavonoid From Desmodium Uncinatum Root Exudate, Is an Allelochemical Against the Development of Striga

Isoschaftoside, a C-glycosylflavonoid From Desmodium Uncinatum Root Exudate, Is an Allelochemical Against the Development of Striga

Antony M Hooper, Muniru K Tsanuo, Keith Chamberlain, Kay Tittcomb, Julie Scholes, Ahmed Hassanali, Zeyaur R Khan, John A Pickett

Phytochemistry. 2010 Jun;71(8-9):904-8.

PMID: 20211477

Abstract:

In East African small-holder farming of maize, the cattle forage legume, Desmodium uncinatum is used as an intercrop due to its allelopathic inhibition of parasitism by Striga hermonthica, an obligate parasitic weed that can devastate the maize crop. Bioassay-guided fractionation of the root extract of D. uncinatum revealed isoschaftoside to be the main compound in the most potent fraction inhibiting growth of germinated S. hermonthica radicles. Bioassays repeated with isoschaftoside isolated from a different plant source, Passiflora incarnata, proved it to be a biologically active component. Analysis of the root exudates produced by hydroponically grown D. uncinatum showed isoschaftoside to be present in the hydroponic media at biologically active concentrations of 10-100 nM.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP52012290	Isoschaftoside		52012-29-0	Price

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