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Multi-omics analysis reveals the mechanism of calcium-reduced quality deterioration in mechanically injured green pepper fruit

文献类型： 外文期刊

作者： Ma, Lili 1 ; Zheng, Yanyan 1 ; Sang, Zhaoze 1 ; Ge, Yonghong 2 ; Bai, Chunmei 1 ; Fu, Anzhen 4 ; Wang, Qing 1 ; Watkins, Christopher B. 5 ; Zuo, Jinhua 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Agroprod Proc & Food Nutr, Beijing Vegetable Res Ctr, Key Lab Vegetable Postharvest Proc,Minist Agr,Beij, Beijing 100097, Peoples R China

2.Bohai Univ, Coll Food Sci & Technol, Natl & Local Joint Engn Res Ctr Storage Proc & Saf, Jinzhou 121013, Liaoning, Peoples R China

3.Nanjing Forestry Univ, Coll Light Ind & Food Engn, Nanjing 210037, Jiangsu, Peoples R China

4.Beijing Technol & Business Univ BTBU, Beijing Engn & Technol Res Ctr Food Addit, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Sch Food & Hlth, Beijing 100048, Peoples R China

5.Cornell Univ, Coll Agr & Life Sci, Sch Integrat Plant Sci, Hort Sect, Ithaca, NY 14853 USA

关键词： Mechanical injury; Green pepper; Calcium chloride; Transcriptome; Metabolome; ATAC-seq

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：7.0； 五年影响因子：6.9 ）

ISSN： 0925-5214

年卷期： 2023 年 204 卷

页码：

收录情况： SCI

摘要： Green pepper is regarded as one of the globally essential commercial crops with bright color and rich nutrition. However, green pepper is susceptible to mechanical injuries as a result of vibration, compression and impact events during postharvest handling and transportation. These injuries can induce physiological and biochemical abnormalities in fruit, thus accelerating fruit senescence and leading to economic losses. Calcium chloride (CaCl2) treatment is a safe, effective and economical method to maintain fruit quality during postharvest storage. Here, the impact of calcium treatment on the fruit quality of mechanically injured green pepper was investigated. The results indicated that calcium treatment maintained the sensory quality and hardness of green pepper fruit, inhibited redness development and elevation in the level of malondialdehyde (MDA). The combination of transcriptomics, metabolomics and assay for transposase accessible chromatin with high-throughput sequencing (ATAC-seq) revealed treatment effects of the expression of key genes related to fruit color change, fruit softening, active oxygen metabolism and hormone response, as well as changes of metabolites concentrations, and chro-matin accessibility changes. A construction of regulatory network model of calcium treatment on post-harvest mechanical injury of green pepper fruit was developed based on these effects. Overall, the study provides valuable insights into the impact of mechanical injury on fruit after harvest and its amelioration by calcium.

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