Diversity in the growth response of isolates of Fusarium oxysporum f.sp. conglutinans to different essential oils

Author:

Helmer Stepan12ORCID,Panek Matej3

Affiliation:

1. Department of Molecular Biology Crop Research Institute Praha Czech Republic

2. Department of Plant Protection, Faculty of Agrobiology, Food and Natural Resources Czech University of Life Science Prague Czech Republic

3. Laboratory of Environmental Microbiology Mikrobiologicky Ustav Akademie věd Ceske Republiky Praha Czech Republic

Abstract

AbstractFusarium oxysporum f.sp. conglutinans (FOC) causes yellow wilt, a serious cabbage disease. This fungal species is composed of many strains within two pathotypes. In this study, the inhibitory effect of essential oils of six aromatic and medicinal plants (oregano, thyme, clove, cinnamon, lemongrass, litsea) at multiple concentrations on eight FOC isolates of different origins was investigated. Our results showed that oregano essential oil had the greatest inhibitory effect. The tested essential oils could be divided into three clusters according to the similar content of their main components (oregano and thyme, clove and cinnamon, lemongrass, and litsea), which correlated to some extent with their inhibitory effects on FOC. The tested isolates also differed in their response to the studied essential oils. The differences within FOC races were more important than between races, and the sensitivity of isolates against essential oils seemed to be more related to the geographical origin of the isolates, rather than to their race affiliation.

Publisher

Wiley

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