CAJ | 학술논문

研究了外源褪黑素对于绿豆幼苗在增强UV-B辐射下叶片内丙二醛含量、过氧化物酶、超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶酶活的影响.实验结果表明,增强UV-B辐射对绿豆产生了氧化胁迫,使其叶片内的丙二醛含量升高,引起抗氧化酶包括过氧化物酶、抗坏血酸过氧化物酶、超氧化物歧化酶和过氧化氢酶酶活提高.而外源褪黑素和UV-B辐射复合处理可以显著地降低绿豆叶片内的丙二醛含量、过氧化物酶、过氧化氢酶和抗坏血酸过氧化物酶酶活.褪黑素单独处理绿豆使各项指标与对照无显著差异.表明在植物体内,褪黑素是一种保护性抗氧化剂,加入一定浓度的外源褪黑素可以减缓UV-B辐射引起绿豆的氧化胁迫.
연구료외원퇴흑소대우록두유묘재증강UV-B복사하협편내병이철함량、과양화물매、초양화물기화매、과양화경매、항배혈산과양화물매매활적영향.실험결과표명,증강UV-B복사대록두산생료양화협박,사기협편내적병이철함량승고,인기항양화매포괄과양화물매、항배혈산과양화물매、초양화물기화매화과양화경매매활제고.이외원퇴흑소화UV-B복사복합처리가이현저지강저록두협편내적병이철함량、과양화물매、과양화경매화항배혈산과양화물매매활.퇴흑소단독처리록두사각항지표여대조무현저차이.표명재식물체내,퇴흑소시일충보호성항양화제,가입일정농도적외원퇴흑소가이감완UV-B복사인기록두적양화협박.
The defend effects of exogenous melatonin on the activity of superoxide dismutase, peroxidase and catalase, ascorbate peroxidase and the concentration of malondialdehyde was examined in mung bean seedlings under the irradiation of UV-B. The results shown that the UV-B treatment can produce oxidative damage to mung bean results in the increasing of the concentration of malondialdehyde and the activity of peroxidase, ascorbate peroxidase, superoxide dismutase and catalase. Compared with UV-B treatment alone, exogenous melatonin combined with UV-B treatment could decrease the concentration of malondialdehyde and the activity of peroxidase,catalase and ascorbate peroxidase. The exogenous melatonin treatment alone has no significant change compare with control. It demonstrated that melatonin is a protective antioxidant in plant. Therefore, a certain concentration exogenous melatonin can suspend the oxidative damage caused by UV-B radiation in mung bean seedling.