NDLI: Caractérisation des composés organiques volatils émis par Fusarium Culmorum et Cochliobolus Sativus en stress et étude du potentiel en lutte biologique

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Caractérisation des composés organiques volatils émis par Fusarium Culmorum et Cochliobolus Sativus en stress et étude du potentiel en lutte biologique

Content Provider	Semantic Scholar
Author	Vangoethem, Valentine
Copyright Year	2017
Abstract	Based on the recent studies which showed that the «quorum sensing» phenomenon discovered in bacteria, was also observed in fungi, the aim of study was to identify volatile organic compounds (VOCs) which were responsible for the self-inhibition behavior of Fusarium culmorum and Cochliobolus sativus fungi causing common root rot in cereals. The study has three aims: to identify the VOCs emitted by F. culmorum and C. sativus for a growth on poor medium (solidified water), in normal conditions (potato dextrose agar) and in overpopulation (10 7 and 10 6 spores/mL), to test the effects of each blend of VOCs emitted by the fungi on their own growth and to finally test individual compounds on the growth of both fungi for three concentration (100 – 500 – 1000 μM). The results showed a growth reduction effect on both strains when subjected to the VOCs of their culture in surpopulation. From this observation, ethyl acetate, isoamyle acetate, isobutanol, longifolene, 1-pentanol, (+)-sativene and toluene identified in these blend have been tested individually on the growth of the strains. For F. culmorum, ethyl acetate, isoamyle acetate and 1-pentanol have shown significant effects on growth reduction for 100 – 500 and 1000 μM and isobutanol for 500 and 1000 μM. For C. sativus, only longifolene has shown significant effect on growth reduction for 1000 μM. These results are promising and open a perspective for the use of fungal VOCs as an alternative to conventional pesticides. Remerciements
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://matheo.uliege.be/bitstream/2268.2/3067/4/Vangoethem_Valentine_TFE.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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