Evidence for natural resistance towards trifloxystrobin in <Emphasis Type="Italic">Fusarium graminearum</Emphasis> |
| |
| Authors: | Tiphaine Dubos Matias Pasquali Friederike Pogoda Lucien Hoffmann Marco Beyer |
| |
| Institution: | 1.Centre de Recherche Public – Gabriel Lippmann,Département Environnement et Agro-biotechnologies,Belvaux,Luxembourg |
| |
| Abstract: | A collection of 55 Fusarium graminearum (Gibberella zeae) strains isolated between 1969 and 2009 in Belgium, Canada, Germany, Italy, Luxembourg, or the USA belonging to the three
known chemotypes (3-acetylated deoxynivalenol, 15-acetylated deoxynivalenol and nivalenol) were screened for their sensitivity
towards the fungicide trifloxystrobin using a liquid culture assay. None of the isolates was completely inhibited by trifloxystrobin
concentrations up to 3 mM. For comparison, prothioconazole completely inhibited fungal growth of a standard isolate at concentrations
as low as 0.007 mM. The maximum level of inhibition, which could be obtained by trifloxystrobin, ranged from 14 to 65% among
the strains tested and was not significantly affected by the country of origin or by the chemotype. The absence of significant
differences in resistance levels between the countries of origin and chemotypes as well as the fact that strains isolated
before the market introduction of strobilurins in 1996 also showed a high level of resistance is evidence that this is largely
a case of natural resistance and not primarily related to strobilurin use in agriculture. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
