Scholarlink

<p>Rhizosphere microbes benefit plant growth and health. How plant-microbe interactions regulate fruit quality remains poorly understood. Here, we elucidate the multi-level modulation of vitamin accumulation in tomato by flavonoid-mediated crosstalk between host plants and rhizosphere microbes. <i>SlMYB12-</i>overexpressing plants with up-regulated flavonoid biosynthesis accumulate higher levels of vitamins C and B<sub>6</sub> in fruits compared to wild-type plants grown in natural soil. Flavonoid-mediated improvement of fruit quality depends on the presence of soil microbiomes and relates to rhizosphere enrichment of key taxa (e.g. <i>Lysobacter</i>). Multi-omics analyses reveal that flavonoids attract <i>Lysobacter soli</i> by stimulating its twitching motility and spermidine biosynthesis, which in turn boosts vitamin accumulation in fruits across tomato cultivars and soil types. RpoN acts as a dual regulator in <i>L. soli</i> that is responsive to flavonoids, controlling bacterial motility and spermidine production. Our study provides insight into flavonoid-mediated rhizosphere signalling and underscores plant-microbiome orchestration for improved tomato fruit quality.</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

Flavonoid-mediated bacterial spermidine biosynthesis enhances vitamin accumulation in tomato fruits

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月12日

查看全文
  • Wenjiang Fu,
  • Chenyu Sun,
  • Bin Sun,
  • Pengfei Li,
  • Xinhua Ding,
  • Qiao Guo,
  • Jun Yuan,
  • Hangxian Lai

摘要

Rhizosphere microbes benefit plant growth and health. How plant-microbe interactions regulate fruit quality remains poorly understood. Here, we elucidate the multi-level modulation of vitamin accumulation in tomato by flavonoid-mediated crosstalk between host plants and rhizosphere microbes. SlMYB12-overexpressing plants with up-regulated flavonoid biosynthesis accumulate higher levels of vitamins C and B6 in fruits compared to wild-type plants grown in natural soil. Flavonoid-mediated improvement of fruit quality depends on the presence of soil microbiomes and relates to rhizosphere enrichment of key taxa (e.g. Lysobacter). Multi-omics analyses reveal that flavonoids attract Lysobacter soli by stimulating its twitching motility and spermidine biosynthesis, which in turn boosts vitamin accumulation in fruits across tomato cultivars and soil types. RpoN acts as a dual regulator in L. soli that is responsive to flavonoids, controlling bacterial motility and spermidine production. Our study provides insight into flavonoid-mediated rhizosphere signalling and underscores plant-microbiome orchestration for improved tomato fruit quality.