中文摘要：在我国，赤霉病主要由产生单端孢霉烯毒素的禾谷镰刀菌复合菌(FGSC)引发。FGSC分为三种化学型：3-乙酰脱氧雪腐镰刀菌烯醇(3-ADON)、15-乙酰脱氧雪腐镰刀菌烯醇(15-ADON)和雪腐镰刀菌烯醇(NIV)。为了预测这些化学型种群在我国冬小麦主产区分布的地理变化，本文研究了分别从三种化学型中随机挑选的二十株菌的生物学特性。研究表明三种化学型的种群分布可能与这些生物学特性有关。
外文摘要：In China, Fusarium head blight is caused mainly by the Fusarium graminearum species complex (FGSC), which produces trichothecene toxins. The FGSC is divided into three chemotypes: 3-acetyldeoxynivalenol (3-ADON), 15-acetyldeoxynivalenol (15-ADON), and nivalenol (NIV). In order to predict the geographical changes in the distribution of these chemotype populations in major winter wheat-producing areas in China, the biological characteristics of twenty randomly selected isolates from each of the three chemotypes were studied. No significant difference was exhibited in the growth rate of 3-ADON, 15-ADON, and NIV isolates at 15°C. At 20°C and 25°C, the growth rate of 15-ADON isolates was the highest. At 30°C, the growth rate of NIV and 3-ADON isolates was significantly higher than that of 15-ADON isolates. The 15-ADON isolates produced the highest quantities of perithecia and two to three days earlier than the other two populations at each temperature, and released more ascospores at 18°C. The aggressiveness test on wheat seedlings and ears indicated there was no significant difference between the 3-ADON and 15-ADON isolates. However, the aggressiveness of NIV isolates was significantly lower than that of the 3-ADON and 15-ADON isolates. The DON content in grains from heads inoculated with the 3-ADON isolates was higher than the content of 15-ADON and NIV isolates. The results showed that 15-ADON population had the advantage in perithecia formation and ascospore release, and the 3-ADON population produced more DON in wheat grains. We suggested that distribution of these three chemotype populations may be related to these biological characteristics.
作者：Liu, YY；Sun, HY；Li, W；Xia, YL；Deng, YY；Zhang, AX；Chen, HG
作者单位：Jiangsu Acad Agr Sci
期刊名称：PLOS ONE
期刊影响因子：3.057
出版年份：2017
出版刊次：3
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