云南师范大学学报（自然科学版）2026，Vol.46Issue(1)：10-16,7.DOI:10.7699/j.ynnu.ns-2026-03
马铃薯野生种Solanum commersonii耐冻关键基因挖掘
Identification of Key Genes Underlying Freezing Tolerance in the Wild Potato Solanum commersonii
摘要
Abstract
This study aimed to elucidate the molecular mechanisms underlying freezing tolerance in potato.U-sing the cold-tolerant wild species Solanum commersonii as material,transcriptome sequencing was performed after a 2-hour treatment at-4℃,resulting in the identification of 4 588 differentially expressed genes,among which upregulated genes accounted for 55.70％.Functional analysis revealed that low-temperature stress sig-nificantly activated freezing resistance-related pathways such as starch and sucrose metabolism,glycolysis/glu-coneogenesis,while inhibiting growth-related metabolism including photosynthesis.Further investigation iden-tified 18 key genes that were significantly upregulated under low temperature,primarily involved in sucrose metabolism,which coordinately regulate the synthesis and breakdown of carbohydrates to provide cellular pro-tection and energy.These findings reveal the molecular basis by which S.commersonii adapts to low tempera-ture through metabolic reprogramming,offering crucial candidate genes and theoretical support for improving freezing tolerance in cultivated potato.关键词
马铃薯/Solanum commersonii/冻害胁迫/转录组Key words
Potato/Solanum commersonii/Low-temperature stress/Transcriptome分类
农业科技引用本文复制引用
刘颖,魏玲玲,杨煊禹,祝光涛,王娟..马铃薯野生种Solanum commersonii耐冻关键基因挖掘[J].云南师范大学学报（自然科学版）,2026,46(1):10-16,7.基金项目
云南省基础研究计划资助项目(202501CF070007) （202501CF070007）
云南省教育厅科学研究基金资助项目(2025J0132). （2025J0132）
