The potency of lemon (Citrus limon L.) essential oil to control some fungal diseases of grapevine wood

Abstract

This study aimed to evaluate the in vitro antifungal activity (AA) of the essential oil (EO) of lemon (Citrus limon L.) against three pathogenic fungi attacking grapevine wood. The composition of the EO was also studied. Ten volatile components were identified by gas chromatography-mass spectrometry. The results showed that the EO consists of volatile components where monoterpene hydrocarbons are the most abundant ones. Four major components were identified, which represent 99.9% of the total EO (limonene, neral, β-pinene, and γ-terpinene). The AA of the EO was evaluated against three pathogenic fungi attacking grapevine wood (Eutypa sp., Botryosphaeria dothidea, and Fomitiporia mediterranea). The results showed that the EO exerts AA against all tested fungi and significantly inhibits their growth. Eutypa sp. is the most sensitive fungus. These results show, for the first time, a new use for the EO of lemon (C. limon L.) to control fungal diseases of grapevine wood.

Keywords: Activité antifongique; Antifungal activity; Citrus limon L.; Essential oil; Grapevine; Huile essentielle; Maladies du bois; Vigne; Wood diseases.