What question did this study set out to answer?

The research aims to understand how rice adapts its root and leaf systems under low-phosphorus conditions.

Synergistic adaptation of rice root phosphorus uptake kinetics and leaf carbon–nitrogen metabolism under low-phosphorus conditions

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Randomized trial examines root phosphorus uptake and leaf carbon metabolism in rice, suggesting strategies for phosphorus-use efficiency.

The research aims to understand how rice adapts its root and leaf systems under low-phosphorus conditions.
Screened 156 rice germplasm resources and selected four cultivars based on phosphorus tolerance.
Used the Claassen–Barber nutrient depletion method alongside gas exchange and enzymatic assays to assess physiological responses.
Analyzed metabolic changes related to phosphorus uptake and carbon–nitrogen balance.
Tolerant cultivars showed a high phosphorus uptake capacity (high I max ) and affinity (low K m ), improving nutrient acquisition.
Net photosynthetic rate for tolerant cultivars was 39.47–45.09% higher than sensitive cultivars at day 21.
Enhanced sucrose phosphate synthase activity indicated a 42.18–43.10% increase in root-to-shoot ratio, facilitating better carbon allocation.

Guan et al. (2026) studied this question.

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