Antifungal activity of Trichoderma VOCs against Pyrenophora teres, the causal agent of barley net blotch
| Autor: | Moya, Paulina, Girotti, Juan Roberto, Toledo, Andrea Vanesa, Sisterna, Marina Noemí |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Ingenierías y Tecnologías
MASS SPECTROMETRY biopesticides Biología gas chromatography VOCS SB1-1110 Agronomía reproducción y protección de plantas Ciencias Agrarias biocontrol mass spectrometry Trichoderma PATHOGENS Plant culture food and beverages VOCs FUNGI pathogens Pyrenophora teres BIOPESTICIDES BIOCONTROL Cromatografía de Gases y Espectrometría de Masas CIENCIAS AGRÍCOLAS purl.org/becyt/ford/4.1 [https] GAS CHROMATOGRAPHY PYRENOPHORA TERES fungi TRICHODERMA Agricultura Silvicultura y Pesca purl.org/becyt/ford/4 [https] |
| Zdroj: | CIC Digital (CICBA) Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Journal of Plant Protection Research, Vol 58, Iss 1, Pp 45-53 (2018) SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| Popis: | Many species of Trichoderma produce secondary metabolites such as volatile organic compounds (VOCs) that reduce plant diseases and promote their growth. In this work we evaluated the antagonistic effects of VOCs released by eight strains of two Trichoderma species against Pyrenophora teres Drechsler, the causal agent of barley net blotch. Antagonism was estimated based on the percentage of mycelial growth inhibition according to the confronted cultures method. VOCs extraction and identification were performed by gas chromatography and mass spectrometry, through different methodologies for VOCs emitted by antagonists and pathogens alone or when confronted. VOCs produced by all Trichoderma strains inhibited mycelial growth of the pathogen in a range of 3 to 32%, showing weak and unpigmented mycelia with vacuolization. In addition, P. teres stimulated the release of VOCs by both Trichoderma species. The major groups of VOCs detected were sesquiterpenes, followed by diterpenes, terpenoids and eight-carbon compounds. This is the first report about characterization of volatiles emitted by Trichoderma in the presence of P. teres. Centro de Investigaciones de Fitopatología |
| Databáze: | OpenAIRE |
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