Modified atmosphere packaging delays postharvest leaf senescence of Chinese flowering cabbage via suppressing chloroplast dismantling and alleviating mitochondrial oxidative damage
文献类型： 外文期刊
作者： Mou, Zhen-liang 1 ; Wang, Chen-xi 1 ; Wei, Wei 1 ; Zhao, Ya-ting 2 ; Wang, Ling 3 ; Ji, Shu-juan 4 ; Shan, Wei 1 ; Kuang, Jian-fei 1 ; Lu, Wang-jin 1 ; Chen, Yu-long 3 ; Chen, Jian-ye 1 ;
作者机构： 1.South China Agr Univ, Coll Hort, Engn Res Ctr Southern Hort Prod Preservat, Guangdong Prov Key Lab Postharvest Sci Fruits & Ve, Guangzhou 510642, Peoples R China
2.Xinjiang Agr Univ, Coll Food Sci & Pharm, Urumqi 830052, Peoples R China
3.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr & Rural Affairs, Guangzhou 510610, Peoples R China
4.Shenyang Agr Univ, Dept Food Sci, Shenyang 110866, Peoples R China
关键词： Chinese flowering cabbage; Chloroplast; Leaf senescence; MAP; Mitochondria; ROS homeostasis
期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：8.0； 五年影响因子：8.1 ）
ISSN： 2214-2894
年卷期： 2023 年 39 卷
页码：
收录情况： SCI
摘要： Onset of leaf senescence comes with biomolecule degradation and cellular organelle degeneration. Here, we examined the efficacy of modified atmosphere packaging (MAP) on reactive oxygen species (ROS) metabolism and ultrastructural changes of chloroplasts and mitochondria in Chinese flowering cabbage leaves during storage at 20 & PLUSMN; 1 celcius. MAP delayed chloroplast dismantling along with lower chlorophyll reduction and Fv/Fm ratio. Furthermore, the integrity of mitochondrial ultrastructure was maintained by MAP treatment during leaf senescence. MAP treatment also lowered accumulation of ROS and maintained higher levels of key components and enzyme activity of ascorbate-glutathione cycle, as well as expression of BrAPX5, BrGR, BrDHAR1 and BrMDHAR2. Additionally, MAP-treated cabbage leaves showed higher activity of peroxidase, superoxide dismutase, catalase and encoding gene expressions. Collectively, above findings suggest that MAP treatment could suppress chloroplast dismantling and maintain ROS homeostasis to mitigate mitochondrial oxidative damage and sustain mitochondrial structure, thereby postponing senescence of Chinese flowering cabbage.
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