Methyl ester of p-coumaric acid: a phytoalexin-like compound from long English cucumber leaves

Methanolic extracts from long English cucumber leaves were fractionated and tested for their fungitoxicity by direct bioassay against Cladosporium cucumerinum on TLC plates. After separation by several preparative TLCs and flash chromatography and purification through reverse-phase HPLC, a crystalli...

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Bibliographic Details
Published inJournal of chemical ecology Vol. 23; no. 6; pp. 1517 - 1526
Main Authors Daayf, F. (Universite Laval, Ste-Foy, Quebec, Canada.), Bel-Rhlid, R, Belanger, R.R
Format Journal Article
LanguageEnglish
Published New York, NY Springer 01.06.1997
Subjects
ACIDE COUMARIQUE
ACIDOS CUMARICOS
Biological and medical sciences
CHEMICAL COMPOSITION
Chemical control
Cladosporium cucumerinum
COMPOSE PHENOLIQUE
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
COMPUESTOS FENOLICOS
Control
COUMARIC ACIDS
CUCUMIS SATIVUS
DISEASE RESISTANCE
FEUILLE
FITOALEXINA
FONGICIDE
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
FUNGICIDAS
FUNGICIDES
HOJAS
LEAVES
PESTICIDAL PROPERTIES
PHENOLIC COMPOUNDS
PHYTOALEXINE
PHYTOALEXINS
Phytopathology. Animal pests. Plant and forest protection
PROPIEDADES PLAGUICIDAS
PROPRIETE DES PESTICIDES
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
Fungicidal effect
Plant pathogen
Cucurbitaceae
Chemical structure
Plant leaf
Cladosporium cucumerinum
Cucumis sativus
Induced resistance
Fungi
Sensitivity resistance
Vegetable crop
Phytoalexin
Dicotyledones
Angiospermae
Phenols
Spermatophyta
Chemical concentration
Fungi Imperfecti
Cinnamic acid(hydroxy)
Thallophyta
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Summary:Methanolic extracts from long English cucumber leaves were fractionated and tested for their fungitoxicity by direct bioassay against Cladosporium cucumerinum on TLC plates. After separation by several preparative TLCs and flash chromatography and purification through reverse-phase HPLC, a crystalline compound possessing antifungal properties was isolated and identified as p-coumaric acid methyl ester. This antifungal compound was found to increase following infection and treatment with Milsana, which could explain in part the prophylactic properties of the natural inducer. As such, p-coumaric acid methyl ester is the first identified compound to be associated with phytoalexin-like behavior in cucumber
Bibliography:1997076723
F60
H20
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0098-0331
1573-1561
DOI:10.1023/b:joec.0000006419.22408.65