Methyl jasmonate maintained antioxidative ability of ginger rhizomes by regulating antioxidant enzymes and energy metabolism
Methyl jasmonate maintained antioxidative ability of ginger rhizomes by regulating antioxidant enzymes and energy metabolism
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DOI：
10.1016/j.scienta.2019.108578
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发表时间：
2019-10-15
影响因子：
4.3
通讯作者：
Chen, Jingxin
中科院分区：
文献类型：
--
作者：
Li, Canying;Zhang, Junhu;Chen, Jingxin
果蔬的抗氧化能力和能量状态与采后衰老和抗逆性密切相关。本研究以100 μ M茉莉酸甲酯（MeJA）溶液处理生姜根茎10 min，在20℃、30% ~ 40%相对湿度条件下贮藏18 d，研究过氧化氢（H2O2）含量、活性氧中抗氧化酶活性及能量代谢的变化。结果表明，MeJA处理提高了生姜根状茎中H2O2含量和超氧化物歧化酶、过氧化物酶、抗坏血酸过氧化物酶和谷胱甘肽还原酶的活性。MeJA处理提高了姜根茎中琥珀酸脱氢酶、细胞色素C氧化酶、H+-ATP酶和Ca2+-ATP酶的活性、ATP含量、ADP含量和能量电荷。上述结果表明，MeJA可通过调节室温贮藏过程中抗氧化酶和能量代谢来维持生姜根茎的抗氧化能力。
Antioxidant capacity and energy status are closely related to postharvest senescence and stress tolerance of fruits and vegetables. In this study, ginger rhizomes were treated with 100 mu M methyl jasmonate (MeJA) solution for 10 min and stored at 20 degrees C with 30%-40% relative humidity for 18 d to investigate the changes of hydrogen peroxide (H2O2) content, the activity of antioxidant enzymes in reactive oxygen species and energy metabolism. The results indicated that MeJA treatment increased H2O2 content and the activity of superoxide dismutase, peroxidase, ascorbate peroxidase and glutathione reductase in ginger rhizomes. The activity of succinate dehydrogenase, cytochrome C oxidase, H+-ATPase and Ca2+-ATPase, the content of ATP, ADP and energy charge were also enhanced by MeJA treatinent in ginger rhizomes. All these results suggest that MeJA could maintain antioxidative capacity of ginger rhizomes by regulating antioxidant enzymes and energy metabolism during room temperature storage.