| Literature DB >> 33714166 |
Miaomiao Yao1, Wanying Ge1, Qian Zhou1, Xin Zhou1, Manli Luo1, Yingbo Zhao1, Baodong Wei1, Shujuan Ji2.
Abstract
We investigated the effect of exogenous glutathione (GSH) on chilling injury (CI) in postharvest bell pepper fruits stored at low temperature and explored the mechanism of this treatment from the perspective of the ascorbate-glutathione (AsA-GSH) cycle. Compared with the control, fruits treated with exogenous GSH before refrigeration displayed only slight CI symptoms and mitigated CI-induced cell damage after 10 d. Moreover, the treated peppers had lower lipid peroxidation product, H2O2, and O2- content than those did the control. Glutathione treatment enhanced the ascorbate-glutathione cycle by upregulating CaAPX1, CaGR2, CaMDHAR1, and CaDHAR1 and the antioxidant enzymes APX, GR, and MDHAR associated with the ascorbate-glutathione cycle. Glutathione treatment also increased ascorbate and glutathione concentrations. Taken together, our results showed that exogenous GSH treatment could alleviate CI in pepper fruits during cold storage by triggering the AsA-GSH cycle and improving antioxidant capacity.Entities:
Keywords: Ascorbate-glutathione cycle; Capsicum annuum L.; Glutathione; Low-temperature damage; Oxidative stress
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Year: 2021 PMID： 33714166 DOI： 10.1016/j.foodchem.2021.129458
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514