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Postharvest Application of Myo-Inositol Extends the Shelf-Life of Banana Fruit by Delaying Ethylene Biosynthesis and Improving Antioxidant Activity

文献类型： 外文期刊

作者： Hu, Lingyu 1 ; Li, Yi 1 ; Zhou, Kun 1 ; Shi, Kaili 1 ; Niu, Yi 1 ; Qu, Feng 1 ; Zhang, Shenglin 1 ; He, Weidi 2 ; Wu, Yuanli 2 ;

作者机构： 1.Southwest Univ, Coll Hort & Landscape Architecture, Chongqing 400716, Peoples R China

2.Guangdong Acad Agr Sci, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangdong Prov Key Lab Sci & Technol Res Fruit Tre, Inst Fruit Tree Res,Minist Agr & Rural Affairs, Guangzhou 510640, Peoples R China

3.Guangzhou Yueguo Agr Technol Co Ltd, Guangzhou 510640, Peoples R China

关键词： banana ripening; shelf-life; myo-inositol; ethylene biosynthesis; reactive oxygen species; cell wall loosening

期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）

ISSN：

年卷期： 2025 年 14 卷 15 期

页码：

收录情况： SCI

摘要： Banana fruits are harvested and then undergo rapid ripening and senescence, sharply limiting their shelf-life and marketability. Myo-inositol (MI) is an important regulator in ethylene production and reactive oxygen species (ROS) accumulation; however, its involvement in the postharvest ripening process of banana remains to be determined. This study found that postharvest application of MI could efficiently delay the fruit ripening and extend the time in which the luster, color, and hardness were maintained in two cultivars with contrasting storage characteristics, storable 'Brazil' and unstorable 'Fenza No. 1', when stored at room temperature (23 degrees C +/- 2 degrees C). Moreover, physiological, metabolic, and gene expression analyses indicated that MI application improved MI metabolism and postponed ethylene biosynthesis and cell wall loosening. The decrease in ethylene production was associated with a reduction in the expression of ACS1 and ACO1 genes. MI treatment decreased the expressions of PL1/2, PG, and EXP1/7/8, which may account for the delay in softening. In addition, the application of MI could alleviate ROS-mediated senescence and cell membrane damage by promoting the activities of SOD, POD, and anti-O2- and decreasing PPO activity. This study shed light on the function of MI in regulating the postharvest ripening and senescence of bananas and provided an efficient strategy for extending shelf-life and reduce losses.

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