中文摘要：从可持续发展来看，农作方式，特别是控制病原体和/或产毒真菌，尊重生态系统和公共卫生，维护农作物质量和丰饶的农作方式不可或缺。本研究致力于评估某些有机添加物放线菌对植物病原真菌和产毒串珠镰刀菌的生物控制潜力。研究表明，使用这些生物防治剂，特别是一些放线菌菌株，作为减少谷物作物及其制品中伏马菌素污染的工具，前景很好。
外文摘要：In a sustainable development concern, the agricultural practices notably those to control the pathogenic and/or mycotoxigenic fungi that maintain the quality and the abundance of crops with respecting the ecosystems and public health are indispensable. Our study focuses on evaluating the biocontrol potential of the actinomycete microflora of some organic amendments against the phytopathogenic and mycotoxigenic Fusarium verticillioides. The inhibitory effect was assessed in term of growth and mycotoxin production (fumonisin FB1 and FB2) of F. verticillioides in the presence of amended soils and selected antagonist agents from the amendments. Results demonstrated that the amended soils with different organic amendments exhibited a higher inhibition rate of Fusarium verticillioides growth than the reference soil. They were able to inhibit the fungal pigment and spore productions which are the major mean of survival and dispersion of this fungus. The fumonisin production was strongly reduced by the metabolites produced by the amended soils’ microbiota, up to 68.7% and 92.5% for FB1 and FB2 respectively. Actinomycete strains isolated from these amendments were identified as Streptomyces and were also tested for their antifungal potential. The fungal growth was reduced up to more than 60% in the presence of extracellular metabolites of several Streptomyces strains. In confrontation assays, most of the Streptomyces strains inhibited strongly both fungal growth and fumonisin production. The FB1 and FB2 amounts were decreased at best, by up to 87.5% and 98.2% respectively, depending on the actinomycete strains and fungal culture time. These results are promising for the use of these biocontrol agents, and especially some actinomycete strains, as tools to reduce fumonisin contamination in cereal crops and derived products.
外文关键词：Fusarium verticillioides；Fumonisins；Biocontrol；Organic amendments；Actinomycetes
作者：Nguyen, PA；Strub, C；Durand, N；Alter, P；Fontana, A；Schorr-Galindo, S
作者单位：Univ Montpellier
期刊名称：BIOLOGICAL CONTROL
期刊影响因子：2.012
出版年份：2018
出版刊次：5
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