数字农科院2.0

Synergistic Effect of Two Peptaibols from Biocontrol Fungus Trichoderma longibrachiatum Strain 40418 on CO-Induced Plant Resistance

文献类型： 外文期刊

作者： Luo, Ning;Jiao, Yang;Ling, Jian;Li, Zeyu;Zhang, Wenwen;Zhao, Jianlong;Li, Yan;Mao, Zhenchuan;Li, Huixia;Xie, Bingyan

作者机构：

关键词： Trichoderma longibrachiatum;biosynthetic gene cluster;peptaibols;induced resistance;synergy

期刊名称： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ISSN： 0021-8561

年卷期： 2024 年

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Trichoderma longibrachiatum is a filamentous fungus used as a biological control agent against different plant diseases. The multifunctional secondary metabolites synthesized by Trichoderma, called peptaibols, have emerged as key elicitors in plant innate immunity. This study obtained a high-quality genome sequence for the T. longibrachiatum strain 40418 and identified two peptaibol biosynthetic gene clusters using knockout techniques. The two gene cluster products were confirmed as trilongin AIV a (11-residue) and trilongin BI (20-residue) using liquid chromatography coupled with tandem mass spectrometry. Further investigations revealed that these peptaibols induce plant resistance to Pseudomonas syringae pv tomato (Pst) DC3000 infection while triggering plant immunity and cell death. Notably, the two peptaibols exhibit synergistic effects in plant-microbe signaling interactions, with trilongin BI having a predominant role. Moreover, the induction of tomato resistance against Meloidogyne incognita showed similarly promising results.

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