title: Transport and homeostasis of potassium and phosphate: limiting factors for sustainable crop production.
abstract: Potassium (K) and phosphate (Pi) are both macronutrients essential for plant growth and crop production, but the unrenewable resources of phosphorus rock and potash have become limiting factors for food security. One critical measure to help solve this problem is to improve nutrient use efficiency (NUE) in plants by understanding and engineering genetic networks for ion uptake, translocation, and storage. Plants have evolved multiple systems to adapt to various nutrient conditions for growth and production. Within the NUE networks, transport proteins and their regulators are the primary players for maintaining nutrient homeostasis and could be utilized to engineer high NUE traits in crop plants. A large number of publications have detailed K+ and Pi transport proteins in plants over the past three decades. Meanwhile, the discovery and validation of their regulatory mechanisms are fast-track topics for research. Here, we provide an overview of K+ and Pi transport proteins and their regulatory mechanisms, which participate in the uptake, translocation, storage, and recycling of these nutrients in plants.
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing 210093, PR China.
authors.forename: Mingda
authors.initials: M
authors.lastname: Luan
authors.affiliation: Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
authors.forename: Ren-Jie
authors.initials: RJ
authors.lastname: Tang
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing 210093, PR China.
authors.forename: Yumei
authors.initials: Y
authors.lastname: Tang
authors.affiliation: Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
authors.forename: Wang
authors.initials: W
authors.lastname: Tian
authors.affiliation: Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
authors.forename: Congong
authors.initials: C
authors.lastname: Hou
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing 210093, PR China.
authors.forename: Fugeng
authors.initials: F
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, School of Life Sciences, Nanjing University, Nanjing 210093, PR China.
authors.forename: Wenzhi
authors.initials: W
authors.lastname: Lan
authors.affiliation: Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
authors.forename: Sheng
authors.initials: S
authors.lastname: Luan
mesh_terms: D001692:Biological Transport; D000069599:Crop Production; D018556:Crops, Agricultural / Q000254:growth & development / Q000378:metabolism*; D006706:Homeostasis; D010758:Phosphorus / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*
chemical_list: D010758:Phosphorus; D011188:Potassium
keywords: CBL-CIPK network; phosphate homeostasis; phosphate transport; potassium homeostasis; potassium transport; regulation mechanism