Isoschaftoside, a C-glycosylflavonoid from Desmodium uncinatum root exudate, is an allelochemical against the development of Striga

Hooper, Antony M., Tsanuo, Muniru K., Chamberlain, Keith, Tittcombe, Kay, Scholes, Julie, Hassanali, Ahmed, Khan, Zeyaur R. and Pickett, John A. ORCID: https://orcid.org/0000-0002-8386-3770 2010. Isoschaftoside, a C-glycosylflavonoid from Desmodium uncinatum root exudate, is an allelochemical against the development of Striga. Phytochemistry 71 (8-9) , pp. 904-908. 10.1016/j.phytochem.2010.02.015

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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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry
Publisher:	Elsevier
ISSN:	0031-9422
Date of Acceptance:	17 February 2010
Last Modified:	18 Feb 2026 11:15
URI:	https://orca.cardiff.ac.uk/id/eprint/184930

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