Background

Due to the perishability of most fruits during post-harvest storage, it is necessary to look for environmental friendly chemical treatments to improve the quality of postharvest fruits. Most recent studies have found that exogenous MT and NO applications can effectively improve the quality of postharvest fruit.

Scope and approach

This article reviews recent applications of NO and MT in postharvest fruits including the effect on delaying senescence, alleviating chilling injury and controlling disease, summaries the potential biochemical mechanisms of the applications of NO and MT in improving postharvest fruit quality.

In addition, the potential crosstalk biochemical mechanism of MT and NO is also discussed.

Key findings and conclusions

This review mainly concluded that exogenous NO treatment improved quality in postharvest fruit which was attributed to follows (1) Inhibition of ethylene biosynthesis. (2) Enhancement of antioxidant system. (3) Induced defense system. (4) Activated CBFs pathway. (5) Regulated sugar and energy metabolisms, and the exogenous MT treatment was attributed to the followings (1) Induced endogenous NO biosynthesis. (2) Enhanced antioxidant system and endogenous MT biosynthesis. (3) Induced defense system. (4) Enhanced GABA shunt pathway, polyamine and proline biosynthesis. Particular finding is the crosstalk mechanism that existing in the applications of exogenous MT and NO in postharvest fruit preservation.

中文翻译：

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一氧化氮和褪黑素在提高果实采后品质及分离和串扰生化机制中的应用

背景

由于大多数水果在收获后的储存过程中易腐烂，因此有必要寻找环保的化学处理方法以提高收获后水果的质量。最新研究发现，外源MT和NO的施用可以有效提高采后果实的质量。

范围和方法

本文综述了NO和MT在采后果实中的最新应用，包括对延缓衰老，减轻冷害和控制病害的影响，总结了NO和MT在改善采后果实品质中的潜在生化机制。

此外，还讨论了MT和NO潜在的串扰生化机理。

主要发现和结论

这篇综述的主要结论是，外源NO处理可提高采后果实的品质，这归因于以下方面：（1）抑制乙烯的生物合成。（2）增强抗氧化系统。（3）诱导防御系统。（4）激活的CBFs途径。（5）调节糖和能量代谢，外源MT处理归因于以下原因：（1）诱导内源性NO的生物合成。（2）增强抗氧化系统和内源MT的生物合成。（3）诱导防御系统。（4）增强的GABA分流途径，多胺和脯氨酸的生物合成。特别的发现是外源MT和NO在采后水果保鲜中的应用中存在的串扰机制。