1. Ultraviolet C irradiation enhances the resistance of grape against postharvest black rot (Aspergillus carbonarius) by regulating the synthesis of phenolic compounds.
- Author
-
Kong Q, Zhang H, Gao Q, Xiong X, Li X, Wang D, Wang L, Zheng H, and Ren X
- Subjects
- Plant Proteins genetics, Plant Proteins metabolism, Catechol Oxidase metabolism, Catechol Oxidase genetics, Disease Resistance, Phenylalanine Ammonia-Lyase metabolism, Phenylalanine Ammonia-Lyase genetics, Vitis microbiology, Vitis radiation effects, Vitis chemistry, Vitis metabolism, Vitis genetics, Phenols metabolism, Phenols pharmacology, Phenols chemistry, Ultraviolet Rays, Plant Diseases microbiology, Fruit microbiology, Fruit chemistry, Fruit metabolism, Fruit radiation effects, Fruit genetics, Fruit drug effects, Aspergillus radiation effects, Aspergillus metabolism, Aspergillus genetics
- Abstract
UV-C irradiation can maintain fruit quality by inducing fruit disease resistance and reducing decay during storage. Grape (Vitis Vinifera L.) was exposed to 2.4 kJ m
-2 UV-C irradiation then inoculated with Aspergillus carbonarius to investigate the changes in nutritional quality, defense related substances and enzyme activities. Postharvest UV-C irradiation can increased the levels of defense-related substances and enzyme activities, such as phenols, flavanols, lignin, proline, glutathione, phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO), and β-1,3-glucanase (GLU). In addition, Resveratrol plays an important role in grape resistance to A. carbonarius infection through further verification by gene expression levels, the transcription factors VvWRKY24 and VvMYB14 are highly correlated with the regulation of VvSTS gene expression. This study revealed the molecular mechanism of postharvest grape fruit response to UV-C irradiation and the defense mechanism against black rot, and provided a theoretical basis for postharvest grape storage and preservation technology., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
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