Exogenous Methyl Jasmonate Alleviates Mechanical Damage in Banana Fruit by Regulating Membrane Lipid Metabolism
文献类型： 外文期刊
作者： Huang, Chunxia 1 ; Yi, Ping 2 ; Li, Jing 1 ; Xie, Lihong 2 ; Huang, Fang 2 ; Huang, Min 2 ; Gan, Ting 2 ; Sun, Jian 3 ; Li, Li 2 ;
作者机构： 1.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541006, Peoples R China
2.Guangxi Acad Agr Sci, Agrofood Sci & Technol Res Inst, Nanning 530007, Peoples R China
3.Guangxi Acad Agr Sci, Guangxi Key Lab Fruits & Vegetables Storage Proc T, Nanning 530007, Peoples R China
4.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China
关键词： banana fruit; methyl jasmonate; mechanical damage; membrane lipids; enzyme activities
期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）
ISSN：
年卷期： 2024 年 13 卷 19 期
页码：
收录情况： SCI
摘要： Bananas are economically important fruits, but they are vulnerable to mechanical damage during harvesting and transport. This study examined the effects of methyl jasmonate (MeJA) on the cell membrane integrity and membrane lipid metabolism of wounded banana fruits after harvest. The results showed that 10 and 50 mu M MeJA treatments on mechanically wounded bananas significantly delayed ripening and senescence in comparison with the control. At the end of storage, MeJA-treated groups showed a significant reduction in electrolyte leakage and malondialdehyde content, indicating that MeJA protected cell membrane integrity. MeJA also led to a significant decrease in the activity of antioxidant enzymes, including lipoxygenase, diacylglycerol kinase, and lipid phosphate phosphatase. Furthermore, MeJA reduced phospholipase (C and D), phosphatidic acid, and diacylglycerol levels, as well as slowed down the decrease in phosphatidylcholine and phosphatidylinositol contents. Compared to the control, MeJA significantly downregulated the expression of MaPLD gamma, MaPLD alpha, and MaPLD zeta. Therefore, MeJA treatment could be a reliable method to delay the senescence of harvested banana fruits subjected to mechanical wounding.
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