Antifungal effect and reduction of Ulmus minor symptoms to Ophiostoma novo-ulmi by carvacrol and salicylic acid
There are still no effective means to control Dutch elm disease (DED), caused by the vascular fungi Ophiostoma ulmi and O. novo-ulmi. Plant phenolics may provide a new strategy for DED control, given their known antifungal activity against pathogens and their involvement in plant defence mechanisms. The in vitro antifungal activity of salicylic acid, carvacrol, thymol, phenol, o-cresol, m-cresol, p-cresol, and 2,5-xylenol against the DED pathogens was tested. Also, the protective effect of watering Ulmus minor seedlings with these compounds was tested against O. novo-ulmi. Salicylic acid, carvacrol, and thymol showed the strongest antifungal in vitro activity, while carvacrol and salicylic acid provided the strongest in vivo protection against O. novo-ulmi (63 and 46% reduction of leaf wilting symptoms with respect to controls, respectively). The effect of the treatments on tree phenology was low, and a significant negative relation was observed between the number of days to bud burst and the leaf wilting symptoms after inoculation, probably determined by genetic differences among the elm tree progenies used. The treatments with salicylic acid, carvacrol and thymol induced the highest shift in phenolic metabolite profile with respect to control trees. The protective effect of carvacrol and salicylic acid is discussed in terms of their combined activity as antifungal compounds and as inductors of tree defence responses. © 2009 KNPV.
Main Authors: | Martín, J. A., Solla, A., Witzell, J., Gil, L., García-Vallejo, M. C. |
---|---|
Format: | artículo biblioteca |
Language: | English |
Published: |
Springer
2010
|
Subjects: | Dutch elm disease, Phenolic compounds, Tree resistance, Tree phenology, |
Online Access: | http://hdl.handle.net/20.500.12792/2651 http://hdl.handle.net/10261/292790 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Chemical changes in Ulmus minor xylem tissue after salicylic acid or carvacrol treatments are associated with enhanced resistance to Ophiostoma novo-ulmi
by: Martín, J. A., et al.
Published: (2012) -
Core endophytic mycobiome in Ulmus minor and its relation to Dutch elm disease resistance
by: Macaya-Sanz, David, et al.
Published: (2023-02-28) -
Phenological and histochemical changes of Ulmus minor due to root absorption of phenol Implications for resistance to DED
by: Martín, J. A., et al.
Published: (2010) -
Heritability of Ulmus minor resistance to Dutch elm disease and its relationship to vessel size, but not to xylem vulnerability to drought
by: Venturas, M., et al.
Published: (2014) -
Massive sequencing of Ulmus minor’s transcriptome provides new molecular tools for a genus under the constant threat of Dutch elm disease
by: Perdiguero, P., et al.
Published: (2015)