Published in Scientific Papers. Series B, Horticulture, Volume LXI
Written by Cristina PETRIȘOR, Alexandru PAICA, Florica CONSTANTINESCU
Secondary metabolites produced by filamentous fungi have different structure and function, and they are a source of novel compounds with pharmaceutical, agricultural and medicinal importance. Trichoderma spp. are considered to be an abundant source of secondary metabolites, some of them with applications in biological control, plant growth promotion, like aroma constituents or in plant immunity. The aim of this study was to assess the potential of volatile and non-volatile metabolites released from some antagonistic Trichoderma spp. isolates against pathogens Fusarium oxysporum f.sp. radicis-lycopersici and Fusarium solani which causes wilting for more cultures. In vitro studies have demonstrate that volatile compounds produced by T49 (67.69%), Tk14 (64.61%), T50 (61.53 %), T85 (60%) showed strong inhibitory effect on FORL growth compared with M14 isolate. The non-volatile tests revealed that three isolates of Trichoderma (T85, T50, Tal12) are the best which inhibited the growth of F.solani in vitro.
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