title: Antifungal activity and phytochemical screening of extracts from Phoenix dactylifera L. cultivars.
abstract: In this study, the rachis extracts of eight date palm Phoenix dactylifera L. cultivars were analysed by phytochemical screening and bioautography on Fusarium oxysporum f. sp. albedinis (Foa). The choice of cultivars was based on their reaction to Foa (resistant, tolerant and sensitive). Phytochemical screening was realised for flavonoids, tannins, alkaloids and coumarins. Antifungal effects were mostly represented by dichloromethanic extracts (seven out of nine inhibition zones). The best results were represented by the dichloromethanic extract of the cultivar 'Bent-Cherk' rachis (6.50 ± 1.41 mm) and the ethyl acetate extract of the cultivar 'Rotbi' rachis (6.00 ± 1.41 mm). The date palm cultivars presented some similarities concerning phytochemical screening results related to their resistance or sensibility to Foa. From the correlation between phytochemical screening and bioautography, it was observed that the majority of bioactive compounds against Foa seem to be polyphenols. Thus, the natural defence mechanism in vivo against Foa is probably related to the action of polyphenols. The difference between resistant, tolerant and sensitive cultivars is related to their mechanism of action.
authors.affiliation: Phytochemistry and Organic Synthesis Laboratory (POSL), Bechar University, Bechar 08000, Algeria. noureddine.boulenouar@gmail.com
authors.forename: Noureddine
authors.initials: N
authors.lastname: Boulenouar
authors.forename: Abderrazak
authors.initials: A
authors.lastname: Marouf
authors.forename: Abdelkrim
authors.initials: A
authors.lastname: Cheriti
mesh_terms: D000085:Acetates; D000470:Alkaloids / Q000032:analysis; D000935:Antifungal Agents / Q000494:pharmacology*; D028023:Arecaceae / Q000737:chemistry* / Q000382:microbiology*; D003374:Coumarins / Q000032:analysis; D005419:Flavonoids / Q000032:analysis; D005670:Fusarium / Q000187:drug effects*; D008752:Methylene Chloride; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018547:Plant Stems / Q000737:chemistry*; D059808:Polyphenols / Q000032:analysis / Q000494:pharmacology; D013634:Tannins / Q000032:analysis
chemical_list: D000085:Acetates; D000470:Alkaloids; D000935:Antifungal Agents; D003374:Coumarins; D005419:Flavonoids; D010936:Plant Extracts; D059808:Polyphenols; D013634:Tannins; D008752:Methylene Chloride; C007650:ethyl acetate