中文摘要：串珠镰刀菌是玉米最主要的致病菌之一，引起穗腐病及茎腐病。该菌还产生高水平的伏马菌素，导致人畜各种疾病。先前研究表明经苏云金芽孢杆菌(Bt)遗传改良的玉米杂交种，大概因为降低了相当于真菌载体的昆虫损伤，表现出更低的串珠镰刀菌感染率及伏马菌素水平。本研究旨在评估Bt及等基因非Bt杂种 (分别为2B710Hx、30F35YG、2B710和30F35)中串珠镰刀菌感染率及伏马菌素浓度。结果表明植株田间发育期间，其它环境参数可能触发伏马菌素的产生；从而应该应用其它管理措施辅助控制伏马菌素污染玉米。
外文摘要：Fusarium verticillioides is one of the main pathogens of maize, causing ear and stalk rots. This fungus is also able to produce high levels of fumonisins, which have been linked to various illnesses in humans and animals. Previous studies have shown that maize hybrids genetically modified with the cry genes from the bacterium Bacillus thuringiensis (Bt) presented lower incidence of F. verticillioides and fumonisin levels, presumably through the reduction of insects, which could act as vectors of fungi. The aim of this study was to assess the incidence of F. verticillioides and the concentration of fumonisins in Bt and isogenic non-Bt hybrids (2B710Hx, 30F35YG, 2B710, and 30F35, respectively). The samples of 2B710Hx and 30F35YG presented lower F. verticillioides frequency than 2B710 and 30F35 samples. However, there was no statistical difference between fumonisin contamination when Bt and non-Bt samples were compared (P > 0.05). The results suggest that other environmental parameters could possibly trigger fumonisin production during plant development in the field; consequently, other management strategies should be applied to aid controlling fumonisin contamination in maize.
外文关键词：Fusarium；Mycotoxins；Fungi；Corn；Transgenic crops
作者：Barroso, VM；Rocha, LO；Reis, TA；Reis, GM；Duarte, AP；Michelotto, MD；Correa, B
作者单位：Univ Sao Paulo
期刊名称：MYCOTOXIN RESEARCH
期刊影响因子：2.0
出版年份：2017
出版刊次：2
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