In Vitro Sensitivity of Botrytis Cinérea to Resinous Exudates of Heliotropium Filifoliumand Geranyl Derivatives Compounds

The activity of the extract of Heliotropium filifolium, of the natural compounds obtained from its resinous exudates, filifolinol and filifolinyl senecionate, and of the synthetic derivative of filifolinol, filifolinoic acid, on the mycelial growth of the phytopathogenic fungus Botrytis cinerea was analyzed in liquid and solid media.The extract of H. filifolium, filifolinol, and filifolinoic acid reduced mycelial growth of this fungus.The effect of these compounds was dose-dependant.The compound filifolinyl senecionate was inactive in all the tested conditions.The extract of H. filifolium and filifolinol retarded the germination of conidia of the fungus.