Functional analysis of StMAPK19 gene in response to salt stress in potato (Solanum tuberosum L.).

ABSTRACT: Soil salinization critically impacts potato cultivation by restricting growth, yield, and tuber quality. The MAPK pathway, evolutionarily conserved in plants, modulates hormonal balance, development, and abiotic stress responses. This study investigates the functional role of StMAPK19, a TDY-type mitogen-activated protein kinase gene, in potato salt tolerance. Phylogenetic analysis classified StMAPK19 into a TDY-motif subgroup, and subcellular localization revealed its presence in the plasma membrane, cytoplasm, and nucleus. Under NaCl stress (50, 100, and 150 mM), StMAPK19 expression was significantly upregulated in roots, stems, and leaves. Phenotypic analyses demonstrated that StMAPK19-overexpressing (OE) plants exhibited enhanced salt tolerance, marked by improved plant height, tuber y

SUBMITTER: Zhu X 

PROVIDER: S-EPMC12613494 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature