Chemical composition and antifungal activity of the essential oil of Artemisia annua L. against foliar and soil-borne fungal pathogens
[ N/A ]
Date
2005
Journal Title
Journal ISSN
Volume Title
Publisher
Eugen Ulmer Gmbh Co
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
The chemical composition of the essential oil of Artemisia annua L. was determined by GC/MS analysis. Among the thirty-seven constituents found, camphor (31.7 %), artemisia ketone (22.3 %), 1,8-cincole (10.1 %), caryophyllene oxide (7.1 %), alpha-copaene (3.4 %) and camphene (3-3 %) were the major components. The in vitro antifungal activity of the essential oil was evaluated against economically important foliar and soil-borne fungal pathogens of tomato, including Sclerotinia sclerotiorum, Botrytis cinerea, Phytophthora infestans and Verticillium dahliae. Both contact and volatile phase effects of different concentrations of the essential oil were determined by using two different methods. Amongst the fungal isolate, S. sclerotiorum was found to be highly sensitive to volatile and contact phase of the essential oil. Minimum fungicidal concentrations of the volatile phase of the essential oil for S. sclerotiorum, B. cinerea, P. infestans and V. dahliae were 1.6, 2.4, 2.4 and 4.4 mu g/ml air, respectively. The essential oil in the contact phase showed minimum fungicidal concentration ranging from 6.4 mu g/ ml to 51.2 mu g/ml. Volatile and contact phase of the essential oils, at 2.4 and 51.2 mu g/ml concentrations, were found to completely inhibit the conidial germination and germ tube elongation of both fungal pathogen tested.
Description
Keywords
antifungal activity, essential oil, Artemisia annua, Botrytis, Phytophthora, Sclerotinia, Verticillium
Journal or Series
Zeitschrift Fur Pflanzenkrankheiten Und Pflanzenschutz-Journal of Plant Diseases and Protection
WoS Q Value
Q4
Scopus Q Value
N/A
Volume
112
Issue
3
