Identification and characterization of potassium (K^+) transporters in potato (Solanum tuberosum L.)

10.6165/tai.2022.67.422

Wan LI；Min CHENG；Yongping ZHAO

K^+ starvation ； Potassium transporters ； Promoter site ； Solanum tuberosum

TAIWANIA

67卷3期（2022 / 09 / 01）

422 - 434+s1-2

英文

Potassium (K^+) transporter genes have important roles in K^+ acquisition, allocation and signal transduction. The purpose of this study was to analyze the characteristics of the K^+ transporter genes/proteins and to study their expression profiles under K^+ deficiency condition in potato (Solanum tuberosum). Strict homology searches were used to find 33 K^+ transporter genes located on potato chromosomes 1 to 12. Gene features, protein features and subcellular Localization were analyzed, and 10 segment duplications were identified from these 33 genes. The functions of K^+ transporter genes were predicted by phylogenetic analysis and analysis of promoter sequences. After Potassium starvation, 12, 13 and 18 K^+ transporter genes were up regulated in roots, stems and leaves, respectively. In addition, the expression of StHAK5, StHAK11 and StKCO2 were up-regulated in potato roots, stems and leaves under phosphate deficiency. Our findings provide a comprehensive view of members of the K^+ transporter family involved in the response to K^+ starvation growth.

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