Exogenous nicotinamide accelerates pyridine nucleotides metabolism and redox homeostasis: A novel strategy for extension of potato dormancy

IF 6.4 1区农林科学 Q1 AGRONOMY Postharvest Biology and Technology Pub Date : 2024-09-16 DOI:10.1016/j.postharvbio.2024.113198

Qiannan Hu , Yingying Dong , Yizhou Xiang , Zisheng Luo , Jiancai Lu , Zhaojun Ban , Li Li

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Abstract

The sprout of potatoes during storage threatens the post-harvest potato market supply chain. To reduce the massive economic losses in potato production industry, herein, the exogenous nicotinamide (NAM) was taken into consideration to maintain the potato quality. This study focused on the role of NAM on potato sprout development and revealed the possible mechanisms from the perspectives of energy and pyridine nucleotides metabolism. It was found that NAM delayed the sprouting and quality deterioration by down-regulating respiration rate and energy charge. Additionally, NAM stimulated the synthesis of nicotinamide adenine dinucleotide (NAD⁺) and nicotinamide adenine dinucleotide phosphate (NADPH) in pyridine nucleotides cycle, which maintained redox balance and reduced the burst of reactive oxygen species (ROS) at the sprouting site. Our findings provide a novel perspective on the possible strategies of NAM for improving the quality of fresh produce.

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外源烟酰胺加速吡啶核苷酸代谢和氧化还原平衡延长马铃薯休眠期的新策略

马铃薯在贮藏过程中发芽威胁着马铃薯收获后的市场供应链。为了减少马铃薯生产行业的巨大经济损失，本文考虑使用外源烟酰胺（NAM）来保持马铃薯的品质。本研究重点研究了 NAM 对马铃薯萌芽发育的作用，并从能量和吡啶核苷酸代谢的角度揭示了可能的机制。研究发现，NAM 通过下调呼吸速率和能量充电，延缓了马铃薯萌芽和品质下降。此外，NAM 还能刺激吡啶核苷酸循环中烟酰胺腺嘌呤二核苷酸（NAD+）和烟酰胺腺嘌呤二核苷酸磷酸（NADPH）的合成，从而维持氧化还原平衡，减少萌芽部位活性氧（ROS）的爆发。我们的研究结果为使用 NAM 改善新鲜农产品质量的可能策略提供了一个新的视角。

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来源期刊

Postharvest Biology and Technology 农林科学-农艺学

CiteScore

12.00

自引率

11.40%

发文量

309

审稿时长

38 days

期刊介绍： The journal is devoted exclusively to the publication of original papers, review articles and frontiers articles on biological and technological postharvest research. This includes the areas of postharvest storage, treatments and underpinning mechanisms, quality evaluation, packaging, handling and distribution of fresh horticultural crops including fruit, vegetables, flowers and nuts, but excluding grains, seeds and forages. Papers reporting novel insights from fundamental and interdisciplinary research will be particularly encouraged. These disciplines include systems biology, bioinformatics, entomology, plant physiology, plant pathology, (bio)chemistry, engineering, modelling, and technologies for nondestructive testing. Manuscripts on fresh food crops that will be further processed after postharvest storage, or on food processes beyond refrigeration, packaging and minimal processing will not be considered.