| 蛇床子素对南瓜白粉病菌侵染的影响 |
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| 引用本文： | 李彩霞,周威,纪明山,石志琦. 蛇床子素对南瓜白粉病菌侵染的影响[J]. 农药学学报, 2007, 9(1): 49-53 |
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| 作者姓名： | 李彩霞 周威 纪明山 石志琦 |
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| 作者单位： | 沈阳农业大学,植物保护学院,沈阳,110161;江苏省农科院,食品质量安全与检测研究所,南京,210014;江苏省农科院,食品质量安全与检测研究所,南京,210014;沈阳农业大学,植物保护学院,沈阳,110161 |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家自然科学基金 |
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| 摘 要： | 采用室内离体叶片法,发现蛇床子素(osthol)处理能显著降低南瓜白粉病菌侵染的病情指数,接菌6 d后对照的病情指数为68.89,经100 μg/mL蛇床子素处理组的病情指数仅为15.56。显微观察发现蛇床子素可有效降低南瓜白粉病菌对寄主的入侵,并可有效抑制菌丝的生长。接菌后48 h,对照菌丝的平均长度接近400 μm,蛇床子素处理组菌丝平均长度仅有122 μm。苯胺蓝染色后显微观察发现蛇床子素还可降低白粉病菌的产孢量。
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| 关 键 词： | 蛇床子素 南瓜白粉病菌 侵染 |
| 文章编号： | 24075832 |
| 收稿时间： | 2006-10-31 |
| 修稿时间： | 2006-10-31 |
Effect of Osthol on the Invasion of Sphaerotheca fuliginea |
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| LI Cai-xi,ZHOU Wei,JI Ming-shan and SHI Zhi-qi. Effect of Osthol on the Invasion of Sphaerotheca fuliginea[J]. Chinese Journal of Pesticide Science, 2007, 9(1): 49-53 |
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| Authors: | LI Cai-xi ZHOU Wei JI Ming-shan SHI Zhi-qi |
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| Affiliation: | 1.College of Plant Protection,Shenyang Agricultural University,Shenyang 110161,China2.Institute of Food Safety,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China |
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| Abstract: | The effect of osthol on the development of Sphaerotheca fuliginea was studied by detached leaves.The results showed that 6 days after inoculation,the disease index was 68.89 in the control,while that was only 15.56 in the treatment with osthol at 100 μg/mL.The number of interaction sites with H2O2 accumulation was strongly decreased in the leaves treated with osthol. Osthol also depressed the growth of mycelia.The average colony length was about 400 μm in the control,while that was only 122 μm in the treatment with 100 μg/mL osthol.Osthol could also depress conidiation of powdery mildew. |
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| Keywords: | osthol Sphaerotheca fuliginea interaction sites |
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