黄麻链霉菌AUH-1拮抗水稻纹枯病菌的作用机制研究

Acta Agriculturae Universitatis Jiangxiensis(Natural Sciences Edition)(2019)

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Abstract
旨在阐释黄麻链霉菌AUH-1拮抗植物病原真菌的作用机理.以水稻纹枯病菌为指示菌,采用平板对峙培养法和紫外分光光度法,测定了菌株AUH-1抗真菌粗提物对菌丝生长、菌核萌发、麦角甾醇合成和脂质过氧化水平的影响.结果表明:黄麻链霉菌AUH-1能显著抑制水稻纹枯病菌菌丝生长和菌核萌发,加剧电导率上升,抑制细胞膜麦角甾醇合成,显著提升细胞膜脂质过氧化水平.由此可见,黄麻链霉菌AUH-1通过作用于植物病原真菌细胞膜,干扰、破坏膜结构与功能,从而达到拮抗效果.
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