Redox signaling: A key element for the development of new post-harvest conditioning technologies

园艺作物的摄入量是极其重要的，因为它们含有大量的营养素，而且它们的摄入量与退化疾病的减少之间普遍存在着相反的关系。因此，这些产品的供应链必须在其所有阶段得到保障，最后一个阶段是收获后储存。正确处理水果和蔬菜将为整个生产链带来经济效益，并提高客户满意度。然而，这可以更进一步，通过收获后的处理可以改变产品的初级和次级新陈代谢。这些改变可以延长农产品的保质期，并导致功能性新鲜农产品的开发。后者包括含有更多植物化学化合物的新鲜农产品，具有药理(即免疫)特性的新鲜农产品，以及具有改善味道和气味特征的新鲜农产品。以前，我们已经证明，不同的非生物胁迫似乎有利于保持产品的质量和低剂量的储藏。然而，我们还没有察觉到导致这些积极变化的早期事件。这提出了一个问题，即是否有可能通过揭示与钙和电波相关的早期事件，以及农产品中的氧化还原信号，来开发植物产品的新储存技术。在此背景下，本研究试图将氧化还原调节和植物激素信号与氧化和还原胁迫改变园艺产品的初级和次生代谢联系起来。这项研究计划的长期目标是开发量身定做的采后处理，以实现功能商品，既具有增强的风味和气味特性，改善植物化学成分，又具有更长的储存期。这项研究的重要性在于，可以为加拿大生产的园艺产品提供附加值，也可以为该国进口的产品提供附加值。因此，这可能会导致生鲜未加工行业一个新行业的开始。在短期和中期，与新鲜农产品相关的研究计划的框架将包括：(1)乙烯在氧化还原状态和整体代谢中的影响；(2)长期储存对氧化还原状态和营养质量的影响；3)由于还原和氧化应激而改变初级和次生代谢；以及4)植物激素在ROS产生中的作用，这些作用来自于新型挥发性杀菌剂的启动作用。这些研究将使用西红柿、哈斯卡普、野生蓝莓和草莓进行。因此，提出了一个概念图的开发，以一种机械的方式解释氧化还原信号在采后滚动，以提高新鲜农产品的质量。

The intake of horticultural crops is of utmost importance due to the amount of nutrients they contain, as well as the generally accepted inverse relationship between their consumption and the decrease in degenerative diseases. Thus, the supply chain of these products must be secured in all its stages, the last one being post-harvest storage. Proper handling of fruits and vegetables results in economic benefits for the entire production chain, as well as customer satisfaction. However, this can be taken a step further, and through post-harvest treatments the primary and secondary metabolism of produce can be modified. These alterations can increase the shelf life of produce and lead to the development of functional fresh produce. The latter include fresh produce with an increased amount of phytochemical compounds, fresh produce with pharmacological (i.e., immunological) character, as well as fresh produce with improved taste and odor characteristics. Previously, we have shown that different abiotic stresses appear to be beneficial in maintaining the quality and storability of produce at low doses. However, we haven't discerned the early events that cause these positive changes. This raises the question of whether it is possible to develop new storage technologies for plant products by unveiling early events related to the calcium and electrical waves, as well as redox signaling in produce. In this context, this research will attempt to relate, redox regulated and phytohormone signaling to modifications of primary and secondary metabolism in horticultural products by oxidative and reductive stresses. The long-term objective of this research program is to develop tailored post-harvest treatments to achieve functional commodities, either with enhanced flavor and odor characteristics, improved phytochemical composition and longer storage life. The importance of this research is that added value can be given to the horticultural products produced in Canada, but also to those that the country imports. Therefore, this could lead to the start of a new sector in the fresh unprocessed industry. In the short and medium term, the framework of the research program related to fresh produce will include: (1) the influence of ethylene in the redox state and overall metabolism; (2) the effect of long-term storage on redox status and nutritional quality; 3) the modification of primary and secondary metabolism due to reducing and oxidative stresses; and 4) the role of phytohormones in the production of ROS derived from the priming action of novel volatile fungicides of bacterial origin. The studies will be carried out using tomatoes, haskaps, wild blueberries and strawberries. Thus, the development of a conceptual map is proposed to explain in a mechanistic way the roll of redox signaling in post-harvest to improve the quality of fresh produce.