Molecular Regulation of Cold-Induced Sweetening and Management of Storage Methods

Cold-induced sweetening (CIS) is a long-standing issue for potato growers and the processing industry. Reduced sugars produced during cold storage affect consumer product acceptance and create a potential health risk. CIS is a coordinated outcome of genetic structure (susceptible or resistant) and environmental factors (storage conditions). Recently, authors have explored the molecular mechanisms behind CIS using advanced technologies such as CRISPR/cas9, metabolomics, and genomics. CIS is regulated by various molecular and biochemical processes, including gene expression modulation, enzyme localization (plastid, vacuole, etc.), and optimal conditions for enzyme activity (acidic/alkaline). At the same time, methods are proposed to control CIS using genome editing, transient modulation gene expression, optimal storage conditions, and external chemical treatments (hormone/synthetic chemicals). In the current chapter, we have reviewed recent developments in the field of tuber postharvest physiology with a specific focus on the CIS phenomenon in potato tubers.