Data underlying the publication: Untargeted metabolomic analysis of potato seed tubers during storage

We explored over two seasons the metabolite profiles of potato seed tubers from four contrasting cultivars, produced from a single field and stored at different temperatures for six months. Employing untargeted metabolomics, we provided a comprehensive overview of changes in tuber metabolic profiles, revealing consistent treatment effects across storage seasons. The number of detected metabolites gradually increased throughout storage, particularly at higher temperatures. Multivariate analyses, including principal component analysis and factor analysis, highlighted cultivar-specific metabolic profiles and pronounced effects of storage time and temperature. These findings offer valuable insights into the metabolic dynamics of potato seed tubers during storage and establish a foundation for understanding the biological functions of key metabolite groups in the physiological ageing process of seed potatoes.

本研究历经两个种植季，针对同一大田繁育的4个性状差异显著的马铃薯种薯品种，系统分析了其经不同温度储存6个月后的代谢物谱特征。本研究采用非靶向代谢组学（untargeted metabolomics）技术，全面梳理了马铃薯块茎代谢物谱的动态变化规律，揭示了不同储存处理在两个种植季中均呈现一致的调控效应。检测到的代谢物总量随储存时长逐步升高，在较高温度储存条件下该增长趋势尤为显著。本研究开展的多元统计分析涵盖主成分分析（principal component analysis）与因子分析（factor analysis），结果凸显了品种特异性的代谢物谱特征，以及储存时长与储存温度的显著影响作用。上述研究结果为解析马铃薯种薯储存过程中的代谢动态提供了重要参考，同时为理解种薯生理衰老进程中关键代谢物类群的生物学功能奠定了理论基础。