中文摘要：针对维生素A缺乏症有了新的解决策略，比如类胡萝卜素含量很高的玉米，它是一种通过遗传转化而富含类胡萝卜素的生物强化转基因玉米系。南非白玉米自交系(M37W)，本身缺乏类胡萝卜素，经遗传转化后能提高β-胡萝卜素（维A原）、叶黄素和玉米黄质的含量。受伏马菌素和其它霉菌毒素污染的玉米籽会对人和家畜健康造成严重的威胁。本研究连续三年，评估收获时玉米籽的真菌发生率和伏马菌素及黄曲霉毒素含量。研究发现，类胡萝卜素高含量玉米与其近等基因系中真菌感染情况相似，均以轮状镰刀霉菌为最常见，没有发现曲霉菌和黄曲霉毒素污染。类胡萝卜素高含量玉米比其近等基因系中伏马菌素含量更低，3年中有2年差异显著，说明玉米粒中类胡萝卜素含量增加能降低伏马菌素含量。
外文摘要：Novel strategies that address vitamin A deficiency have been developed, such as high-carotenoid maize, a biofortified transgenic maize line rich in carotenoids generated by genetic transformation. The South African white maize inbred (M37W), which is devoid of carotenoids, was engineered to accumulate high levels of β-carotene (provitamin A), lutein, and zeaxanthin. Maize seeds contaminated with fumonisins and other mycotoxins pose a serious threat to both humans and livestock. During three consecutive harvests, the fungal incidence and the fumonisin and aflatoxin content of maize seeds grown in an experimental field in Catalonia (Northeastern Spain) were evaluated. Fungal infection was similar in high-carotenoid maize and its isogenic line, with Fusarium verticillioides being the most prevalent fungus in all the harvests. Neither Aspergillus spp. nor aflatoxin contamination was found. Fumonisin levels were lower in high carotenoid than in its isogenic line, but this reduction was statistically significant in only 2 of the 3 years of study. Our results suggest that high carotenoid content reduces fumonisin levels in maize grains.
外文关键词：Maize；Carotenoids；Fumonisins；Aflatoxins；Fusarium
作者：Diaz-Gomez, J；Marin, S；Nogareda, C； Sanchis, V；Ramos, AJ
作者单位：Univ Lleida
期刊名称：MYCOTOXIN RESEARCH
期刊影响因子：2.0
出版年份：2016
出版刊次：4
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