%A Yi Wang, Yi-Fang Chen and Wei-Hua Wu %T Potassium and phosphorus transport and signaling in plants %0 Journal Article %D 2021 %J J Integr Plant Biol %R 10.1111/jipb.13053 %P 34-52 %V 63 %N 1 %U {https://www.jipb.net/CN/abstract/article_61163.shtml} %8 2021-01-01 %X Nitrogen (N), potassium (K), and phosphorus (P) are essential macronutrients for plant growth and development, and their availability affects crop yield. Compared with N, the relatively low availability of K and P in soils limits crop production and thus threatens food security and agricultural sustainability. Improvement of plant nutrient utilization efficiency provides a potential route to overcome the effects of K and P deficiencies. Investigation of the molecular mechanisms underlying how plants sense, absorb, transport, and use K and P is an important prerequisite to improve crop nutrient utilization efficiency. In this review, we summarize current understanding of K and P transport and signaling in plants, mainly taking Arabidopsis thaliana and rice (Oryza sativa) as examples. We also discuss the mechanisms coordinating transport of N and K, as well as P and N.