Genome-Wide Identification of StMAPKKKs and Functional Characterization of StMAPKKK44 in Regulating Salt and Drought Tolerance in Potato (Solanum tuberosum L.)

2026-05-18

PRE

Xi Zhu *

Kaitong Wang

Xiaoqin Duan

Xidan Pang

Xuanrong Du

Zhilin Han

Wei Li

Shu Chen

Hui Jin

Zhuo Chen

Yu Zhang

Yasir Majeed *

DOI：10.1016/j.jplph.2026.154799

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• Identification of 85 StMAPKKKs and salt/drought-induced upregulation of StMAPKKK44. • StMAPKKK44 localizes to the plasma membrane, cytoplasm, and nucleus. • Interaction of StMAPKKK44 with StMAPKK1/5 verified by Y2H, BiFC, and SLC. • StMAPKKK44 upregulates antioxidant genes and boosts biomass under salt and drought. • StMAPKKK44 modulates redox and osmotic balance for salt and drought stress resilience.

Keywords:

StMAPKKK44

salt tolerance

drought tolerance

antioxidant genes

redox balance

Genome-Wide Identification of StMAPKKKs and Functional Characterization of StMAPKKK44 in Regulating Salt and Drought Tolerance in Potato (Solanum tuberosum L.)

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