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<p>Plant-beneficial microbe interactions are vital for enhancing soil-borne disease resistance, largely through the assembly of a disease-suppressive microbiome. However, the mechanisms governing these interactions remain elusive. Here, we establish an interaction model between banana and <i>Streptomyces yongxingensis</i> sp. nov. 2-11. We demonstrate that strain Sy2-11 suppresses banana <i>Fusarium</i> wilt (BFW) by recruiting a protective rhizosphere microbiome. Furthermore, we identify sesquiterpenes (aristolene and ledene), produced by strain Sy2-11, as key signaling molecules that trigger banana roots to biosynthesize 10-hydroxycapric acid (10-HCA). Interestingly, 10-HCA specifically enriches beneficial <i>Bacillus</i> spp., which is essential for the suppression of BFW. This effect is validated by synthetic communities (SynComs) and chemotaxis-deficient mutants of <i>Bacillus velezensis</i>. Our findings reveal a previously unreported mechanism that differs from conventional plant-microbe interactions, whereby <i>Streptomyces</i>, acting as a beneficial elicitor, releases sesquiterpene signals to trigger 10-HCA secretion in banana plants, thereby orchestrating the assembly of a rhizosphere microbiome that suppresses BFW. These findings provide a promising strategy for rhizosphere micro-ecological regulation and sustainable soil-borne disease control, with significant potential for advancing sustainable agriculture.</p>

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Streptomyces sesquiterpenes elicit 10-HCA secretion and recruit disease-suppressive microbiota to enhance banana Fusarium wilt resistance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月3日

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  • Yufeng Chen,
  • Junting Feng,
  • Peitao Lü,
  • Dengbo Zhou,
  • Yongzan Wei,
  • Tao Jing,
  • Zai Zheng,
  • Waseem Raza,
  • Dengfeng Qi,
  • Miaoyi Zhang,
  • Yankun Zhao,
  • Kai Li,
  • Wei Wang,
  • Xu Cheng,
  • Jianghui Xie

摘要

Plant-beneficial microbe interactions are vital for enhancing soil-borne disease resistance, largely through the assembly of a disease-suppressive microbiome. However, the mechanisms governing these interactions remain elusive. Here, we establish an interaction model between banana and Streptomyces yongxingensis sp. nov. 2-11. We demonstrate that strain Sy2-11 suppresses banana Fusarium wilt (BFW) by recruiting a protective rhizosphere microbiome. Furthermore, we identify sesquiterpenes (aristolene and ledene), produced by strain Sy2-11, as key signaling molecules that trigger banana roots to biosynthesize 10-hydroxycapric acid (10-HCA). Interestingly, 10-HCA specifically enriches beneficial Bacillus spp., which is essential for the suppression of BFW. This effect is validated by synthetic communities (SynComs) and chemotaxis-deficient mutants of Bacillus velezensis. Our findings reveal a previously unreported mechanism that differs from conventional plant-microbe interactions, whereby Streptomyces, acting as a beneficial elicitor, releases sesquiterpene signals to trigger 10-HCA secretion in banana plants, thereby orchestrating the assembly of a rhizosphere microbiome that suppresses BFW. These findings provide a promising strategy for rhizosphere micro-ecological regulation and sustainable soil-borne disease control, with significant potential for advancing sustainable agriculture.