Chemical composition and antifungal properties of Oregano essential oils against the Moroccan soil-born pathogen Fusarium culmorum

Document Type : Original Article

Authors

1 Laboratory of Botanic, Biotechnology and Plant Protection, Department of Biology, Faculty of Science University Ibn Tofail, Kenitra, Morocco/Research Unit of Plant Breeding and Conservation of Plant Genetic Resources, National Institute for Agricultural Research, Rabat, Morocco

2 Research Unit of Plant Breeding and Conservation of Plant Genetic Resources, National Institute for Agricultural Research, Rabat, Morocco

3 Research Center in Plant and Microbial Biotechnologies, Biodiversity and Environment, Faculty of Sciences, Mohammed V University of Rabat, Morocco/ International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat 10080, Morocco

4 Research Center in Plant and Microbial Biotechnologies, Biodiversity and Environment, Faculty of Sciences, Mohammed V University of Rabat, Morocco

5 Laboratory of Botanic, Biotechnology and Plant Protection, Department of Biology, Faculty of Science University Ibn Tofail, Kenitra, Morocco

Abstract

In our study, the application of Oregano was investigated in vitro against ten isolates of Fusarium culmorum the causative agent of wheat root rot in Morocco. The chemical composition of essential oils extracted by hydrodistillation from the aerial parts of Origanum onites and Origanum compactum was analyzed by GC. The major components of O. onites Eo were Carvacrol (29,7%) and p-cymene (22,48%) while Thymol (26,25%) was the predominant constituent in O. compactum EO. The results of the antifungal activity revealed that both oils have an inhibitory effect against all tested isolates. O. onites and O.compactum Eos inhibited the growth of all isolates tested by 100% at the concentration of 1 µL.mL−1 and 1.2 µL.mL−1 respectively. They have the potential to be used as antifungal agents for the control of wheat Rot root.

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