Postharvest UV-A treatment promotes mango fruit pigmentation and ripening in a dose-dependent manner
文献类型： 外文期刊
作者： Li, Feili 1 ; Tahir, Muhammad Mobeen 1 ; Yang, Chengkun 1 ; Weng, Zhongrui 1 ; Zhu, Wencan 1 ; Zhang, Yawen 1 ; Zhou, Kaibing 1 ; Deng, Qin 1 ; Qian, Minjie 1 ; Wu, Hongxia 3 ;
作者机构： 1.Hainan Univ, Sanya Inst Breeding & Multiplicat, Sch Trop Agr & Forestry, Haikou 570228, Peoples R China
2.Hainan Univ, Sch Trop Agr & Forestry, Key Lab Qual Regulat Trop Hort Crop Hainan Prov, Haikou 570228, Peoples R China
3.Chinese Acad Trop Agr Sci, Minist Agr & Rural Affairs, South Subtrop Crops Res Inst, Key Lab Trop Fruit Biol, Zhanjiang 524013, Peoples R China
关键词： Mangifera indica; Ultraviolet light; Pigment; Reactive oxygen species (ROS); Antioxidant capacity; Fruit ripening
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.8； 五年影响因子：7.5 ）
ISSN： 0925-5214
年卷期： 2025 年 230 卷
页码：
收录情况： SCI
摘要： Anthocyanin, carotenoid, and chlorophyll are the predominant pigments determining the coloration of mango fruit, and ripening is one of the most crucial developmental processes for fruit. Fruit pigmentation and ripening are regulated by light; however, the effect of ultraviolet-A (UV-A) on mango fruit pigmentation and ripening is still unknown. In this study, 'Guifei' mangoes at the green-mature stage were subjected to white light alone (control) or white light combined with low, medium, and high doses of UV-A irradiation, namely UV-AL, UV-AM, and UV-AH, respectively. The content of pigments, reactive oxygen species (ROS), antioxidants, and cell wall components; light signal and pigment metabolism-related gene expression; and the activity of antioxidant and pectin-degradation enzymes were measured. The results demonstrated that UV-A promoted the coloration in mango fruit peel by inducing the accumulation of anthocyanin and carotenoid and the degradation of chlorophyll and also increased the carotenoid content in flesh, with the more pronounced effect by UV-AH treatment. The expression of key light signal and pigment metabolism-related genes, including MiHY5, MiMYB1, MiANS, MiBCH, MiSGR, and MiSGR1, was up-regulated by UV-A. UV-A promoted ROS accumulation and cell wall degradation but also activated the antioxidative system in mango fruit. This study provides a practical solution for improving peel coloration in mango production and offers new insights into postharvest ripening strategies.
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