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

Abstract

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.

Chemical Analysis of the Resinous Exudate Isolated from Heliotropium taltalense and Evaluation of the Antioxidant Activity of the Phenolics Components and the Resin in Homogeneous and Heterogeneous Systems

“…From the resinous exudate of H. taltalense five compounds ( Figure 1 ): two aromatic geranyl derivatives called filifolinol ( 1 ) and filifolinyl senecionate ( 2 ) were isolated. These had been previously obtained from H. filifolium (Miers) Reiche [ 2 , 6 ] and their antifungal and antiviral activities were demonstrated [ 22 , 23 , 24 ]. Also, three flavonoids – naringenin ( 3 ), 3-O-methylgalangin ( 4 ) and 7-O-methyleriodictiol ( 5 ) – were purified.…”

Evaluation of Antifungal Properties Against the Phytopathogenic Fungus Botrytis Cinereaof Anthocyanin Rich-Extracts Obtained From Grape Pomaces

“…The fungitoxicity on mycelial growth of B. cinerea of different anthocyanin extracts was assessed in vitro using the radial growth test on malt-yeast extract agar 16 . Anthocynin extracts dissolved in 0.2 M sodium acetate buffer, pH 4.9 at different concentrations were added to malt-yeast extract agar medium.…”

Synthesis and Antifungal Evaluation of Substituted 3-Benzylquinoxaline Derivatives

“…In the present research work, the activity spectrum of all the synthesized compounds was analyzed by agar well diffusion method in triplicate [6][7][8][9][10][11][12]. Digital colony counter (Toshiba, EIE-1901) was used for inoculum preparation.…”