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<p>Single-cell and spatial transcriptomics have revolutionized studies of symbiotic nitrogen fixation by resolving cellular heterogeneity, spatial gene-expression, and regulatory dynamics within root nodules. Recent investigations in model legumes have revealed conserved and species-specific programs controlling immune recognition, nodule development, and nitrogen-fixation metabolism. Integrating these datasets with single-cell epigenomic profiles, such as chromatin accessibility and three-dimensional genome architecture, provides new insight into epigenetic mechanisms that regulate key symbiotic genes. Comparative single-cell analyses across legumes and non-legumes elucidate phenotypic diversity and core regulatory networks of symbiotic nitrogen fixation at the cellular level, offering critical frameworks for engineering this process in non-legume crops.</p>

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Advances in single-cell and spatial omics for studying symbiotic nitrogen fixation: comparative cellular and evolutionary perspectives

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月11日

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  • Yan Shi,
  • Huiru Liu,
  • Weicai Yang,
  • Jixian Zhai,
  • Haifeng Wang

摘要

Single-cell and spatial transcriptomics have revolutionized studies of symbiotic nitrogen fixation by resolving cellular heterogeneity, spatial gene-expression, and regulatory dynamics within root nodules. Recent investigations in model legumes have revealed conserved and species-specific programs controlling immune recognition, nodule development, and nitrogen-fixation metabolism. Integrating these datasets with single-cell epigenomic profiles, such as chromatin accessibility and three-dimensional genome architecture, provides new insight into epigenetic mechanisms that regulate key symbiotic genes. Comparative single-cell analyses across legumes and non-legumes elucidate phenotypic diversity and core regulatory networks of symbiotic nitrogen fixation at the cellular level, offering critical frameworks for engineering this process in non-legume crops.