中文摘要：大气中CO2浓度升高不仅直接影响植物，而且还影响植物-病原体的相互作用。由于关系到经济及健康问题，本研究特别关注升高后的CO2水平(750μmol/mol)对黄色镰刀菌感染及霉菌毒素污染小麦的影响。结果表明将来的环境条件，如CO2水平升高，可能增加霉菌毒素污染粮食的威胁。
外文摘要：Increasing atmospheric CO2 concentration not only has a direct impact on plants but also affects plant-pathogen interactions. Due to economic and health-related problems, special concern was given thus in the present work to the effect of elevated CO2 (750 μmol mol-1) level on the Fusarium culmorum infection and mycotoxin contamination of wheat. Despite the fact that disease severity was found to be not or little affected by elevated CO2 in most varieties, as the spread of Fusarium increased only in one variety, spike grain number and/or grain weight decreased significantly at elevated CO2 in all the varieties, indicating that Fusarium infection generally had a more dramatic impact on the grain yield at elevated CO2 than at the ambient level. Likewise, grain deoxynivalenol (DON) content was usually considerably higher at elevated CO2 than at the ambient level in the single-floret inoculation treatment, suggesting that the toxin content is not in direct relation to the level of Fusarium infection. In the whole-spike inoculation, DON production did not change, decreased or increased depending on the variety × experiment interaction. Cooler (18 °C) conditions delayed rachis penetration while 20 °C maximum temperature caused striking increases in the mycotoxin contents, resulting in extremely high DON values and also in a dramatic triggering of the grain zearalenone contamination at elevated CO2. The results indicate that future environmental conditions, such as rising CO2 levels, may increase the threat of grain mycotoxin contamination.
外文关键词：Deoxynivalenol；Elevated CO2；Fusarium culmorum；Mycotoxin；Triticum aestivum；Zearalenone
作者：Bencze, S；Puskas, K；Vida, G；Karsai, I；Balla, K；Komaromi, J；Veisz, O
作者单位：Hungarian Acad Sci
期刊名称：MYCOTOXIN RESEARCH
期刊影响因子：2.0
出版年份：2017
出版刊次：3
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