Wounding-induced postharvest losses of potato tubers is a serious economic problem in the United States (≥$320 million year⁻¹) and globally. Developing safe and effective postharvest treatment strategy to enhance wound-healing (WH) responses is extremely important to mitigate wound-induced potato tuber losses. Formation of protective suberin layer in the wound surface is the primary WH response of potato tubers. In this study, biological elicitor based postharvest treatment strategy using water-soluble chitosan oligosaccharide (COS 0.125 g L⁻¹), and phenolics-rich cranberry pomace (Nutricran 0.125 g L⁻¹) was employed to accelerate formation of suberin layer in wounded potato tubers. A standardized disk model system was used to study WH responses in certified mini tubers of cv. Russet Burbank and cv. Russet Norkotah, 4 days after wounding. The effects of these elicitor treatments on the regulation of pentose phosphate pathway (PPP) and associated antioxidant enzyme responses were investigated as key control points for improving suberization and related WH processes in wounded potato tubers. Postharvest treatments of COS and Nutricran resulted in improved accumulation of suberin polyphenolics (SPP) in wounded tissues of both potato cultivars after 4 days of WH when compared to control (buffer treatment). Additionally, higher soluble phenolic content, enhanced activity of glucose-6-phosphate dehydrogenase (G6PDH), guaiacol peroxidase (GPX), and catalase (CAT) were observed in COS-treated tissues of cv. Russet Burbank. Therefore, COS postharvest treatment can be integrated and optimized in further investigations to potentially improve suberization and WH processes in wounded potato tubers.

受伤引起的马铃薯块茎采后损失是美国（≥3.2 亿美元年^-1）和全球的一个严重经济问题。制定安全有效的采后处理策略以增强伤口愈合 (WH) 反应对于减轻伤口引起的马铃薯块茎损失极为重要。在伤口表面形成保护性木栓质层是马铃薯块茎的主要 WH 反应。在这项研究中，基于生物诱导剂的采后处理策略使用水溶性壳寡糖 (COS 0.125 g L ⁻¹ ) 和富含酚类物质的蔓越莓果渣 (Nutricran 0.125 g L ⁻¹) 用于加速受伤马铃薯块茎中木栓质层的形成。使用标准化的圆盘模型系统研究经过认证的 cv 微型块茎中的 WH 响应。Russet Burbank 和简历。Russet Norkotah，受伤后 4 天。研究了这些诱导剂处理对磷酸戊糖途径 (PPP) 调节和相关抗氧化酶反应的影响，作为改善受伤马铃薯块茎栓化和相关 WH 过程的关键控制点。与对照（缓冲处理）相比，WH 4 天后，COS 和 Nutricran 的采后处理导致两种马铃薯品种的受伤组织中木栓质多酚 (SPP) 的积累有所改善。此外，更高的可溶性酚含量，增强的葡萄糖 6-磷酸脱氢酶 (G6PDH)、愈创木酚过氧化物酶 (GPX) 的活性，在 COS 处理的 cv 组织中观察到过氧化氢酶 (CAT)。罗塞特·伯班克。因此，可以在进一步研究中整合和优化 COS 采后处理，以潜在地改善受伤马铃薯块茎的木栓化和 WH 过程。