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LED irradiation delays postharvest senescence in pakchoi by regulating amino acid metabolism

文献类型： 外文期刊

作者： Zhou, Fuhui 1 ; Yue, Xiaozhen 1 ; Xu, Dongying 1 ; Shi, Junyan 1 ; Fang, Shibei 1 ; Yuan, Shuzhi 1 ; Jiang, Aili 2 ; Zuo, Jinhua 1 ; Wang, Qing 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Key Lab Fruits & Vegetable Storage & Proc, Key Lab Vegetable Postharvest Proc,Minist Agr & Ru, Inst Agrifood Proc & Nutr,Beijing Vegetable Res Ct, Beijing 100097, Peoples R China

2.Dalian Minzu Univ, Coll Life Sci, Dalian 116600, Peoples R China

关键词： LED irradiation; Postharvest senescence; Amino acid; Metabolomic; Transcriptomic

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）

ISSN： 0925-5214

年卷期： 2022 年 194 卷

页码：

收录情况： SCI

摘要： Low-level white light-emitting diode (LED) irradiation can postpone postharvest senescence in pakchoi, however, the effect on postharvest amino acid metabolism is poorly understood. In this study, metabolomic and tran-scriptomic data were used to investigate amino acid metabolism in LED-treated pakchoi. Results indicated that LED irradiation had a considerable effect on the metabolism of several amino acids (histidine, cysteine and methionine, tryptophan, glycine, serine and threonine, lysine, and arginine and proline), with glycine, serine, and threonine metabolism being the most affected. The level of gene expression and metabolites related to the affected amino acids in LED-treated samples was closer to the levels in initial samples. LED irradiation was also found to increase soluble protein content, and decrease protease activity and amino acids level at 5 d of storage. These results indicate that the primary mechanism by which white LED irradiation delays pakchoi senescence is through the regulation of amino acid metabolism.

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