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Antifungal effect and reduction of Ulmus minor symptoms to Ophiostoma novo-ulmi by carvacrol and salicylic acid

Martín, Juan A. and Solla, Alejandro and Witzell, Johanna and Gil, Luis and García-Vallejo, María C. (2010). Antifungal effect and reduction of Ulmus minor symptoms to Ophiostoma novo-ulmi by carvacrol and salicylic acid. European journal of plant pathology. 127:1, 21-32
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Official URL: http://www.springerlink.com/content/t0q3q274g552w4...

Abstract

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.

Authors/Creators:Martín, Juan A. and Solla, Alejandro and Witzell, Johanna and Gil, Luis and García-Vallejo, María C.
Title:Antifungal effect and reduction of Ulmus minor symptoms to Ophiostoma novo-ulmi by carvacrol and salicylic acid
Series/Journal:European journal of plant pathology (0929-1873)
Year of publishing :2010
Volume:127
Number:1
Page range:21-32
Publisher:Springer
ISSN:0929-1873
Language:English
Publication Type:Journal article
Refereed:Yes
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:Dutch elm disease, phenolic compounds , tree resistance, tree phenology
URN:NBN:urn:nbn:se:slu:epsilon-2-436
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-2-436
ID Code:4682
Department:(S) > Southern Swedish Forest Research Centre
Deposited By: Johanna Witzell
Deposited On:17 Jun 2010 00:00
Metadata Last Modified:02 Dec 2014 10:32

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