J Integr Plant Biol. ›› 2021, Vol. 63 ›› Issue (1): 34-52.DOI: 10.1111/jipb.13053

Special Issue: Development Nitrogen uptake and utilization

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Potassium and phosphorus transport and signaling in plants

Yi Wang , Yi-Fang Chen  and Wei-Hua Wu*   

  1. State Key Laboratory of Plant Physiology and Biochemistry (SKLPPB), College of Biological Sciences, China Agricultural University, Beijing 100193, China.

    These authors contributed equally to this work.
    * Correspondence: Wei-Hua Wu (whwu@cau.edu.cn)
  • Received:2020-10-09 Accepted:2020-12-10 Online:2020-12-15 Published:2021-01-01

Abstract: 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.

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