DNA methylation mediated by melatonin was involved in ethylene signal transmission and ripening of tomato fruit
文献类型： 外文期刊
作者： Shan, Shuangshuang 1 ; Wang, Zhiqiang 1 ; Pu, Huili 1 ; Duan, Wenhui 1 ; Song, Hongmiao 1 ; Li, Jiangkuo 2 ; Zhang, Zhengke 1 ; Xu, Xiangbin 1 ;
作者机构： 1.Hainan Univ, Coll Food Sci & Engn, Haikou 570228, Hainan, 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.Key Lab Food Nutr & Funct Food Hainan Prov, Haikou 570228, Hainan, Peoples R China
关键词： Melatonin; DNA Methylation; Fruit ripening; Postharvest tomato
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）
ISSN： 0304-4238
年卷期： 2022 年 291 卷
页码：
收录情况： SCI
摘要： Melatonin (MT) as an evolutionarily highly conserved molecule plays an exceptional role in plants. In the present study, the regulation mechanism of the DNA methylation of CpG islands of ethylene signaling genes induced by MT on postharvest ripening of tomato fruit was studied. The ripening of tomato fruit was significantly promoted by the 0.5 mM MT treatment, as revealed by the appearance color, the lycopene, total soluble solids and vitamin C content of the fruit. In the MT treated fruit, the DNA methylation levels of CpG island of SlACS10 and SlERF-A1 were decreased, and the DNA methylation level of CpG island of SlCTR1 was increased. In addition, MT treatment increased the expression level of SlACS10, SlEIN3, SlERF-A1 and SlERT10, inhibited the expression level of SlCTR1, and by which the ethylene signaling might be activated and the ripening was promoted. The effect of MT on the DNA methylation of CpG islands of genes involved in ethylene signaling may contribute to the ripening of tomato fruit. The present study provided valuable information for understanding the essential role of DNA methylation in the postharvest ripening of tomato fruit.
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