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<p>Sustainable crop production in a warming climate requires land management strategies that support plant-soil-microbe interactions to optimize nitrogen (N) availability. Here, we investigate the interacting effects of 10 years’ experimental warming and management (conservation vs. conventional agriculture) on wheat N acquisition using in situ <sup>15</sup>N-labeling, root metabolomics and microbial metagenomics. We find that warming amplifies the positive effects on wheat nitrate uptake by 25% in conservation agriculture compared to conventional agriculture, while alleviating microbial competition for N. Additionally, warming increases soil gross N mineralization and nitrification rates by 191% and 159%, but decreases microbial immobilization by 24% in conservation agriculture. Concurrently, microbial genes for mineralization and nitrification are enriched, while those for N immobilization and nitrate reduction are reduced under conservation agriculture with warming. These shifts are driven by alterations in root primary and secondary metabolites, which reshape N-cycling microbial functional niches and optimize multiple microbial N processes beyond mere organic N mining. This reconfiguration increases carbon-nitrogen exchange efficiency, enabling wheat to outcompete soil microorganisms for N. Collectively, our findings suggest that conservation agriculture enhances plant N acquisition by strengthening plant-soil-microbe interactions under climate change, providing a sustainable strategy for future food security.</p>

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Conservation agriculture raises crop nitrogen acquisition by amplifying plant-microbe synergy under climate warming

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月11日

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  • Cunkang Hao,
  • Jennifer A. J. Dungait,
  • Wenhui Shang,
  • Ruixing Hou,
  • Huarui Gong,
  • Yunfeng Yang,
  • Hans Lambers,
  • Peng Yu,
  • Manuel Delgado-Baquerizo,
  • Xingliang Xu,
  • Amit Kumar,
  • Ye Deng,
  • Xi Peng,
  • Zhenling Cui,
  • Yakov Kuzyakov,
  • Jizhong Zhou,
  • Fusuo Zhang,
  • Jing Tian

摘要

Sustainable crop production in a warming climate requires land management strategies that support plant-soil-microbe interactions to optimize nitrogen (N) availability. Here, we investigate the interacting effects of 10 years’ experimental warming and management (conservation vs. conventional agriculture) on wheat N acquisition using in situ 15N-labeling, root metabolomics and microbial metagenomics. We find that warming amplifies the positive effects on wheat nitrate uptake by 25% in conservation agriculture compared to conventional agriculture, while alleviating microbial competition for N. Additionally, warming increases soil gross N mineralization and nitrification rates by 191% and 159%, but decreases microbial immobilization by 24% in conservation agriculture. Concurrently, microbial genes for mineralization and nitrification are enriched, while those for N immobilization and nitrate reduction are reduced under conservation agriculture with warming. These shifts are driven by alterations in root primary and secondary metabolites, which reshape N-cycling microbial functional niches and optimize multiple microbial N processes beyond mere organic N mining. This reconfiguration increases carbon-nitrogen exchange efficiency, enabling wheat to outcompete soil microorganisms for N. Collectively, our findings suggest that conservation agriculture enhances plant N acquisition by strengthening plant-soil-microbe interactions under climate change, providing a sustainable strategy for future food security.