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Background and aims <p>Nutrient resorption conserves limiting elements and may support crop resilience under climate warming. Because plant organs differ in function and nutrient dynamics, warming may alter nitrogen (N) and phosphorus (P) resorption in an organ-specific manner. We tested how long-term simulated warming affects resorption efficiencies and N-P coordination across soybean organs.</p> Methods <p>An eight-year soil transplant experiment in Northeast China simulated different levels of climate warming (control, + 3&#xa0;°C and + 5&#xa0;°C). We quantified N and P resorption efficiencies (NRE, PRE) in soybean leaves, stems, and roots, and evaluated nutrient coordination using (i) power-law relationships between resorbed N:P and organ nutrient ratios and (ii) allometric scaling exponents between NRE and PRE.</p> Results <p>Across treatments, NRE and PRE were higher in leaves than in stems and roots. Warming increased leaf NRE and PRE by 12.1% and 11.5% under the + 3&#xa0;°C treatment and by 19.6% and 13.3% under the + 5&#xa0;°C treatment, respectively. In contrast, warming reduced nutrient resorption efficiencies in stems and roots. Only leaves showed a significant stoichiometric pattern between resorbed N:P and organ N:P. Consistently, the allometric scaling exponent between NRE and PRE was lower in stems and roots, indicating weaker N-P resorption coupling in non-leaf organs.</p> Conclusion <p>Our results demonstrate a whole-plant, organ-specific adjustment of nutrient conservation in soybean under long-term simulated warming. Leaves intensified N and P retrieval, whereas stems and roots shifted toward nutrient accumulation/reservoir functions and weaker N-P resorption coordination. This coordinated redistribution strategy may help legumes maintain nutrient-use efficiency under climate warming.</p>

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Differential nutrient resorption strategies of soybean organs for adapting to climate warming

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Mengya Chen,
  • Pingting Guan,
  • Wei Wang,
  • Liang Chang,
  • Ruslan Saifutdinov,
  • Yurong Yang,
  • Donghui Wu

摘要

Background and aims

Nutrient resorption conserves limiting elements and may support crop resilience under climate warming. Because plant organs differ in function and nutrient dynamics, warming may alter nitrogen (N) and phosphorus (P) resorption in an organ-specific manner. We tested how long-term simulated warming affects resorption efficiencies and N-P coordination across soybean organs.

Methods

An eight-year soil transplant experiment in Northeast China simulated different levels of climate warming (control, + 3 °C and + 5 °C). We quantified N and P resorption efficiencies (NRE, PRE) in soybean leaves, stems, and roots, and evaluated nutrient coordination using (i) power-law relationships between resorbed N:P and organ nutrient ratios and (ii) allometric scaling exponents between NRE and PRE.

Results

Across treatments, NRE and PRE were higher in leaves than in stems and roots. Warming increased leaf NRE and PRE by 12.1% and 11.5% under the + 3 °C treatment and by 19.6% and 13.3% under the + 5 °C treatment, respectively. In contrast, warming reduced nutrient resorption efficiencies in stems and roots. Only leaves showed a significant stoichiometric pattern between resorbed N:P and organ N:P. Consistently, the allometric scaling exponent between NRE and PRE was lower in stems and roots, indicating weaker N-P resorption coupling in non-leaf organs.

Conclusion

Our results demonstrate a whole-plant, organ-specific adjustment of nutrient conservation in soybean under long-term simulated warming. Leaves intensified N and P retrieval, whereas stems and roots shifted toward nutrient accumulation/reservoir functions and weaker N-P resorption coordination. This coordinated redistribution strategy may help legumes maintain nutrient-use efficiency under climate warming.