Scholarlink

<p>Germination and growth of biocontrol microorganisms in soil are often inhibited by soil fungistasis (SF), resulting in unsatisfactory control efficacy. Therefore, exploring mechanisms underlying SF is important for developing efficient biocontrol agents. Benzaldehyde has a strong fungistatic effect against the nematophagous fungus <i>Arthrobotrys oligospora</i>. Our transcriptome analysis suggested a fungistatic model by which benzaldehyde induces reactive oxygen species (ROS), leading to energy deficiency and in turn activating the AMPK-mTOR pathway. The ROS-inducing compound retinol enhanced benzaldehyde fungistasis (BF), whereas the antioxidant substance <i>N</i>-acetyl cysteine reduced ROS production and enhanced BF resistance in <i>A. oligospora</i>. Inhibiting the glutathione antioxidant system by blocking the supply of NADPH decreased BF resistance in <i>A. oligospora</i>. Furthermore, the AMPK activator acadesine bolstered BF resistance in <i>A. oligospora</i>, while the AMPK inhibitor dorsomorphin dihydrochloride or knocking out the AMPK gene had the opposite effect. These results strongly support a fungistatic mechanism of action for benzaldehyde. Finally, we found that the fungistatic mechanism of benzaldehyde similarly underlies SF, with the AMPK activators acadesine or metformin effectively increasing the SF resistance of <i>A. oligospora</i>. This study suggests a mechanism by which soil inhibits fungi and offers a potential method for improving SF resistance of fungal biocontrol agents.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The fungistatic mechanism of benzaldehyde against the nematophagous fungus Arthrobotrys oligospora suggests a method for manipulating soil fungistasis

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月10日

查看全文
  • Li-Xue Tan,
  • Ying-Ying Zhang,
  • Zhi-Jian Liu,
  • Yi Cao,
  • Jian-Jin Liu,
  • Ming-He Mo,
  • Tong Liu

摘要

Germination and growth of biocontrol microorganisms in soil are often inhibited by soil fungistasis (SF), resulting in unsatisfactory control efficacy. Therefore, exploring mechanisms underlying SF is important for developing efficient biocontrol agents. Benzaldehyde has a strong fungistatic effect against the nematophagous fungus Arthrobotrys oligospora. Our transcriptome analysis suggested a fungistatic model by which benzaldehyde induces reactive oxygen species (ROS), leading to energy deficiency and in turn activating the AMPK-mTOR pathway. The ROS-inducing compound retinol enhanced benzaldehyde fungistasis (BF), whereas the antioxidant substance N-acetyl cysteine reduced ROS production and enhanced BF resistance in A. oligospora. Inhibiting the glutathione antioxidant system by blocking the supply of NADPH decreased BF resistance in A. oligospora. Furthermore, the AMPK activator acadesine bolstered BF resistance in A. oligospora, while the AMPK inhibitor dorsomorphin dihydrochloride or knocking out the AMPK gene had the opposite effect. These results strongly support a fungistatic mechanism of action for benzaldehyde. Finally, we found that the fungistatic mechanism of benzaldehyde similarly underlies SF, with the AMPK activators acadesine or metformin effectively increasing the SF resistance of A. oligospora. This study suggests a mechanism by which soil inhibits fungi and offers a potential method for improving SF resistance of fungal biocontrol agents.