Iuliana RAUT, Mihaela BADEA-DONI, Mariana CALIN, Florin OANCEA, GELU VASILESCU, Tatiana Eugenia SESAN, Luiza JECU<br>Effect of Volatile and Non-Volatile Metabolites from <br>Trichoderma spp. against Important Phytopathogens

Iuliana RAUT, Mihaela BADEA-DONI, Mariana CALIN, Florin OANCEA, GELU VASILESCU, Tatiana Eugenia SESAN, Luiza JECU
Effect of Volatile and Non-Volatile Metabolites from
Trichoderma spp. against Important Phytopathogens

Abstract:

The aim of this study was to assess the potential of volatile and non-volatile metabolites from antagonistic Trichoderma spp. against phytopathogenic fungi. The biocontrol activity was tested versus the pathogens responsible for important losses in agriculture, such as: Fusarium graminearum, Rhizoctonia solani and Pythium ultimum. In vitro studies have demonstrated that the volatile and non-volatile metabolites produced by the strains Trichoderma T36 and T50 displayed inhibitory effects on pathogens growth. The volatile metabolites assay revealed that Trichoderma T36 produced a higher inhibitory effect on pathogens growth as comparative with T50. Maximum inhibition (100%) by the volatile compounds occurred in R. solani - Trichoderma T36 interaction. Mycelial growth of target fungi was retarded by non-volatile metabolites from antagonistic strains. The pathogens growth was significantly restricted at higher concentrations of culture filtrate and a total inhibition of R. solani and P. ultimum was obtained with 50% (v/v) concentration of filtrate from Trichoderma T36. The strain of Trichoderma T36 used in current study was capable to inhibit the growth of fungal pathogens and may be used as an efficient agent to control a broad spectrum of plant pathogens. Keywords : biocontrol, non-volatile metabolites, pathogen, Trichoderma, volatile metabolites

Issue: 2014, Volume 65, Issue 11

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