TY - JOUR N2 - 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. L1 - http://journals.pan.pl/Content/103653/PDF/AOP_JPPR_58_1_Toledo.pdf L2 - http://journals.pan.pl/Content/103653 PY - 2018 IS - No 1 DO - 10.24425/119115 KW - biocontrol KW - biopesticides KW - fungi KW - gas chromatography KW - mass spectrometry KW - pathogens KW - Pyrenophora teres KW - Trichoderma KW - VOCs A1 - Moya, Paulina A1 - Girotti, Juan Roberto A1 - Toledo, Andrea Vanesa A1 - Sisterna Marina Noemi PB - Committee of Plant Protection PAS PB - Institute of Plant Protection – National Research Institute VL - vol. 58 DA - 2018.03.30 T1 - Antifungal activity of Trichoderma VOCs against Pyrenophora teres, the causal agent of barley net blotch UR - http://journals.pan.pl/dlibra/publication/edition/103653 T2 - Journal of Plant Protection Research ER -