Despite the negative impact on human, animal and environmental health, synthetic fungicides are the most common agrochemicals used to control Botrytis cinerea, the causal agent of grey mold disease. Strawberry plants are very susceptible to many pathogens, especially the necrotrophic fungus B. cinerea. In this work, we show that two fungal extracts obtained from a local isolate of Colletotrichum acutatum (M11) can protect strawberry plants against grey mold. Fungal culture filtrate (CF), and the axenic semi-purified culture filtrate (ACF) induce local and systemic acquired resistance against B. cinerea, and reduce fungal virulence. These results suggest that CF and ACF can be used as effective ingredients of bioproducts to control grey mold in strawberry crop. We also show that the elicitor peptide flg22 is effective to confer strawberry plants local and systemic protection against B. cinerea but only when applied 24 h prior to the infection.

中文翻译：

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番茄炭疽病菌提取物介导的灰葡萄孢引起的草莓灰霉病的生物防治

尽管对人类，动物和环境健康有负面影响，但合成杀真菌剂是控制灰霉病（灰霉病病原体）的最常见的农用化学品。草莓植物对许多病原体特别是坏死性真菌灰质芽孢杆菌B. cinerea非常敏感。在这项工作中，我们表明，从局部分离的炭疽菌（Mollet Colrichotrichum acutatum）（M11）获得的两种真菌提取物可以保护草莓植株免受灰霉病的侵害。真菌培养物滤液（CF）和树突状半纯化培养物滤液（ACF）诱导对灰葡萄孢的局部和全身获得性抗性，并降低真菌毒力。这些结果表明，CF和ACF可以用作控制草莓作物灰霉病的生物制品的有效成分。我们还显示，激发子肽flg22可有效赋予草莓植株针对灰葡萄芽胞杆菌的局部和全身性保护，但仅在感染前24小时应用。