ArticleFrontiers in plant science2026
Molecular resilience: genetic analysis of multiple-stress tolerance (osmotic, salinity, cold and heat) during potato (
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Multiple-stress is defined as the simultaneous or sequential exposure of plants to multiple abiotic constraints, which triggers regulatory programs that differ fundamentally from single-stress responses. In potato ( Methods: RNA-seq profiling of microtuberization under combined osmotic, salinity, heat, and cold stress was performed. Differential expression analysis identified shared differentially expressed genes (DEGs). A subset of upregulated genes was used for protein-protein interaction (PPI) network construction. Comparative regulatory analyses were performed, and selected genes were validated by qPCR. Statistical analyses were conducted to assess differential expression and network enrichment. Results: A total of 2,046 shared DEGs were identified, including 1,212 upregulated and 834 downregulated genes. A PPI network constructed from 1,475 unique upregulated genes revealed 317 highly interconnected components. Network analysis identified the StSP6A-FD tuberigen complex as a central regulatory hub integrating developmental signaling with phenylpropanoid metabolism, oxylipin biosynthesis, and redox regulation. Multiple components were associated with hydrogen sulfide (H₂S) signaling, suggesting redox-gasotransmitter integration. Discussion: Comparative regulatory analysis revealed conservation of the ERF-NAC-MYB-bZIP transcription factor framework, along with expansion of stress-responsive modules. Collectively, these findings establish a mechanistic framework linking tuber induction with adaptive metabolic remodeling under multi-stress conditions.
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