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Flavones enrich rhizosphere Pseudomonas to enhance nitrogen utilization and secondary root growth in Populus

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  • Jiadong Wu

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Sijia Liu

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Haoyu Zhang

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Sisi Chen

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Jingna Si

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Lin Liu

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Yue Wang

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Shuxian Tan

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Yuxin Du

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Zhelun Jin

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Jianbo Xie

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

  • Deqiang Zhang

    (Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University
    Beijing Forestry University)

Abstract

Plant growth behavior is a function of genetic network architecture. The importance of root microbiome variation driving plant functional traits is increasingly recognized, but the genetic mechanisms governing this variation are less studied. Here, we collect roots and rhizosphere soils from nine Populus species belonging to four sections (Leuce, Aigeiros, Tacamahaca, and Turanga), generate metabolite and transcription data for roots and microbiota data for rhizospheres, and conduct comprehensive multi-omics analyses. We demonstrate that the roots of vigorous Leuce poplar enrich more Pseudomonas, compared with the poorly performing poplar. Moreover, we confirm that Pseudomonas is strongly associated with tricin and apigenin biosynthesis and identify that gene GLABRA3 (GL3) is critical for tricin secretion. The elevated tricin secretion via constitutive transcription of PopGL3 and Chalcone synthase (PopCHS4) can drive Pseudomonas colonization in the rhizosphere and further enhance poplar growth, nitrogen acquisition, and secondary root development in nitrogen-poor soil. This study reveals that plant-metabolite-microbe regulation patterns contribute to the poplar fitness and thoroughly decodes the key regulatory mechanisms of tricin, and provides insights into the interactions of the plant’s key metabolites with its transcriptome and rhizosphere microbes.

Suggested Citation

  • Jiadong Wu & Sijia Liu & Haoyu Zhang & Sisi Chen & Jingna Si & Lin Liu & Yue Wang & Shuxian Tan & Yuxin Du & Zhelun Jin & Jianbo Xie & Deqiang Zhang, 2025. "Flavones enrich rhizosphere Pseudomonas to enhance nitrogen utilization and secondary root growth in Populus," Nature Communications, Nature, vol. 16(1), pages 1-15, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56226-w
    DOI: 10.1038/s41467-025-56226-w
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    References listed on IDEAS

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    1. Ruihuan Yang & Qing Shi & Tingting Huang & Yichao Yan & Shengzhang Li & Yuan Fang & Ying Li & Linlin Liu & Longyu Liu & Xiaozheng Wang & Yongzheng Peng & Jiangbo Fan & Lifang Zou & Shuangjun Lin & Gon, 2023. "The natural pyrazolotriazine pseudoiodinine from Pseudomonas mosselii 923 inhibits plant bacterial and fungal pathogens," Nature Communications, Nature, vol. 14(1), pages 1-16, December.
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