Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis

The postharvest softening and corresponding quality deterioration of blueberry fruits are crucial factors that hinder long-distance sales and long-term storage. Cold plasma (CP) is an effective technology to solve this, but the specific mechanism of delaying fruit softening remains to be revealed. H...

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Main Authors: Can Zhang, Jun-Hu Cheng
Format: Article
Language:English
Published: MDPI AG 2024-04-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/13/7/1132
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author Can Zhang
Jun-Hu Cheng
author_facet Can Zhang
Jun-Hu Cheng
author_sort Can Zhang
collection DOAJ
description The postharvest softening and corresponding quality deterioration of blueberry fruits are crucial factors that hinder long-distance sales and long-term storage. Cold plasma (CP) is an effective technology to solve this, but the specific mechanism of delaying fruit softening remains to be revealed. Here, this study found that CP significantly improved blueberry hardness. Physiological analysis showed that CP regulated the dynamic balance of reactive oxygen species (ROS) to maintain hardness by increasing antioxidant content and antioxidant enzyme activity, resulting in a 12.1% decrease in the H<sub>2</sub>O<sub>2</sub> content. Transcriptome analysis revealed that CP inhibited the expression of cell wall degradation-related genes such as the pectin hydrolase gene and cellulase gene, but up-regulated the genes of the ROS-scavenging system. In addition, the resistance genes in the MAPK signaling pathway were also activated by CP in response to fruit ripening and softening and exhibited positive response characteristics. These results indicate that CP can effectively regulate the physiological characteristics of blueberries at a genetic level and delay the softening process, which is of great significance to the storage of blueberries.
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spelling doaj.art-81dbe2498cec40ed9b7fc860286f47bc2024-04-12T13:18:45ZengMDPI AGFoods2304-81582024-04-01137113210.3390/foods13071132Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic AnalysisCan Zhang0Jun-Hu Cheng1School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaSchool of Food Science and Engineering, South China University of Technology, Guangzhou 510641, ChinaThe postharvest softening and corresponding quality deterioration of blueberry fruits are crucial factors that hinder long-distance sales and long-term storage. Cold plasma (CP) is an effective technology to solve this, but the specific mechanism of delaying fruit softening remains to be revealed. Here, this study found that CP significantly improved blueberry hardness. Physiological analysis showed that CP regulated the dynamic balance of reactive oxygen species (ROS) to maintain hardness by increasing antioxidant content and antioxidant enzyme activity, resulting in a 12.1% decrease in the H<sub>2</sub>O<sub>2</sub> content. Transcriptome analysis revealed that CP inhibited the expression of cell wall degradation-related genes such as the pectin hydrolase gene and cellulase gene, but up-regulated the genes of the ROS-scavenging system. In addition, the resistance genes in the MAPK signaling pathway were also activated by CP in response to fruit ripening and softening and exhibited positive response characteristics. These results indicate that CP can effectively regulate the physiological characteristics of blueberries at a genetic level and delay the softening process, which is of great significance to the storage of blueberries.https://www.mdpi.com/2304-8158/13/7/1132blueberry softeningcold plasmaROS metabolismtranscriptome
spellingShingle Can Zhang
Jun-Hu Cheng
Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
Foods
blueberry softening
cold plasma
ROS metabolism
transcriptome
title Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
title_full Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
title_fullStr Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
title_full_unstemmed Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
title_short Assessing the Effect of Cold Plasma on the Softening of Postharvest Blueberries through Reactive Oxygen Species Metabolism Using Transcriptomic Analysis
title_sort assessing the effect of cold plasma on the softening of postharvest blueberries through reactive oxygen species metabolism using transcriptomic analysis
topic blueberry softening
cold plasma
ROS metabolism
transcriptome
url https://www.mdpi.com/2304-8158/13/7/1132
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AT junhucheng assessingtheeffectofcoldplasmaonthesofteningofpostharvestblueberriesthroughreactiveoxygenspeciesmetabolismusingtranscriptomicanalysis