数字农科院2.0

Progress in the Study of Plant Nitrogen and Potassium Nutrition and Their Interaction Mechanisms

文献类型： 外文期刊

作者： Cao, Weiyu;Sun, Hai;Shao, Cai;Wang, Yue;Zhu, Jiapeng;Long, Hongjie;Geng, Xiaomeng;Zhang, Yayu

作者机构：

关键词： nutrient function;absorption and transport;photosynthesis;signalling;fertiliser use efficiency

期刊名称： HORTICULTURAE

ISSN：

年卷期： 2025 年 11 卷 8 期

页码：

收录情况： SCIE（2025版）

摘要： Nitrogen (N) and potassium (K) are essential macronutrients for plants whose functions and interactions profoundly influence plant physiological metabolism, environmental adaptation, and agricultural production efficiency. This review summarizes research advances in plant N and K nutrition and their interaction mechanisms, elucidating the key physiological functions of N and K individually and their respective absorption and transport mechanisms involving transporters such as NRTs and HAKs/KUPs. The review discusses the types of nutrient interactions (synergism and antagonism), with a primary focus on the physiological basis of N-K interactions and their interplay in root absorption and transport (e.g., K+-NO3- co-transport; NH4+ inhibition of K+ uptake), photosynthesis (jointly optimizing CO2 conductance, mesophyll conductance, and N allocation within photosynthetic machinery to enhance photosynthetic N use efficiency, PNUE), as well as sensing, signaling, co-regulation, and metabolism. This review emphasizes that N-K balance is crucial for improving crop yield and quality, enhancing fertilizer use efficiency (NUE/KUE), and reducing environmental pollution. Consequently, developing effective N-K management strategies based on these interaction mechanisms and implementing Balanced Fertilization Techniques (BFT) to optimize N-K ratios and application strategies in agricultural production represent vital pathways for ensuring food security, addressing resource constraints, and advancing green, low-carbon agriculture, including through coordinated management of greenhouse gas emissions.

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