Xylem K⁺ loading modulates K⁺ and Cs⁺ absorption and distribution in Arabidopsis under K⁺-limited conditions.

ABSTRACT: Potassium (K⁺) is an essential macronutrient for plant growth. The transcriptional regulation of K⁺ transporter genes is one of the key mechanisms by which plants respond to K⁺ deficiency. Among the HAK/KUP/KT transporter family, HAK5, a high-affinity K⁺ transporter, is essential for root K⁺ uptake under low external K⁺ conditions. HAK5 expression in the root is highly induced by low external K⁺ concentration. While the molecular mechanisms of HAK5 regulation have been extensively studied, it remains unclear how plants sense and coordinates K⁺ uptake and translocation in response to changing environmental conditions. Using skor mutants, which have a defect in root-to-shoot K<

SUBMITTER: Kanno S 

PROVIDER: S-EPMC10557132 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature