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http://dx.doi.org/10.14348/molcells.2014.0141

Strategies for Improving Potassium Use Efficiency in Plants  

Shin, Ryoung (RIKEN Center for Sustainable Resource Science)
Publication Information
Molecules and Cells / v.37, no.8, 2014 , pp. 575-584 More about this Journal
Abstract
Potassium is a macronutrient that is crucial for healthy plant growth. Potassium availability, however, is often limited in agricultural fields and thus crop yields and quality are reduced. Therefore, improving the efficiency of potassium uptake and transport, as well as its utilization, in plants is important for agricultural sustainability. This review summarizes the current knowledge on the molecular mechanisms involved in potassium uptake and transport in plants, and the molecular response of plants to different levels of potassium availability. Based on this information, four strategies for improving potassium use efficiency in plants are proposed; 1) increased root volume, 2) increasing efficiency of potassium uptake from the soil and translocation in planta, 3) increasing mobility of potassium in soil, and 4) molecular breeding new varieties with greater potassium efficiency through marker assisted selection which will require identification and utilization of potassium associated quantitative trait loci.
Keywords
plant; potassium deficient signaling; potassium uptake efficiency; potassium use efficiency;
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