Overexpression of Sly-miR167a delayed postharvest chilling injury of tomato fruit under low temperature storage
文献类型： 外文期刊
作者： Li, Lei 1 ; Wang, Xuanqi 1 ; Lv, Jieyu 1 ; Duan, Wenhui 1 ; Huang, Taishan 1 ; Zhao, Keyan 1 ; Meng, Lanhuan 1 ; Song, Hongmiao 1 ; Wang, Qing 3 ; Xu, Xiangbin 1 ; Li, Jiangkuo 2 ;
作者机构： 1.Hainan Univ, Sch Food Sci & Engn, Key Lab Food Nutr & Funct Food Hainan Prov, Haikou 570228, Peoples R China
2.Natl Engn & Technol Res Ctr Preservat Agr Prod, Tianjin Key Lab Postharvest Physiol & Storage Agr, Tianjin 300384, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr, Beijing Key Lab Fruits & Vegetable Storage & Proc, Beijing 100097, Peoples R China
4.Hainan Univ, Sch Food Sci & Engn, Haikou 570228, Peoples R China
5.Natl Engn & Technol Res Ctr Preservat Agr Prod, Tianjin 300384, Peoples R China
关键词： MicroRNA167a; ARF6a; Chilling injury; Tomato fruit; Ethylene
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： Chilling injury (CI) of tomato fruit leads to the deterioration of fruit quality, thereby shortening the shelf life of tomato fruit. The present experiment investigates the effect of Sly-miR167a on postharvest cold tolerance of tomato fruit. Results demonstrated that overexpression of Sly-miR167a in tomato fruit effectively reduced electrolyte leakage (EL), hydrogen peroxide (H2O2) content, malondialdehyde (MDA) content and CI index during low temperature storage. Compared with wild-type (WT) and the silencing miR167a by short tandem target mimic (miR167a-STTM) fruit, overexpression of Sly-miR167a (miR167a-OE) fruit accumulated more ascorbic acid (AsA), proline, lycopene, and phenolics, and also maintained higher activities of antioxidant en-zymes. At low temperatures, miR167a-OE fruit sustained better quality, and had lower expression levels of ARF6a, higher levels of ethylene production and higher expression levels of CBF1. Overexpression of Sly-miR167a delayed the appearance of CI symptoms, improving the chilling tolerance of postharvest tomato fruit.
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