| UV-B辐射对小麦叶抗氧化系统的影响 |
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| 引用本文： | 陈拓,任红旭,王勋陵.UV-B辐射对小麦叶抗氧化系统的影响[J].环境科学学报,1999,19(4):453-455. |
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| 作者姓名： | 陈拓 任红旭 王勋陵 |
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| 作者单位： | 兰州大学生物系,兰州,730000 |
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| 基金项目： | 中国科学院资助项目，高等学校博士学科点专项科研项目，3947004，39670132，， |
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| 摘 要： | 研究了温室种植的小麦在０（ＣＫ）、８．８２ｋＪ／ｍ＾２（Ｔ１）和１２．６ｋＪ／ｍ＾２（Ｔ２）三种剂量的紫外线Ｂ（ＵＶ－Ｂ）辐射下抗氧化系统的变化及其原因。ＵＶ－Ｂ辐射诱导了Ｈ２Ｏ２的合成，还原型抗坏血酸和还原型谷胱甘肽含量的增加、过氧化氢酶、愈创木酚过氧化物酶、抗坏血酸过氧化物酶和谷胱甘肽还原酶活性升高，而类胡萝卜素稍有所降低、超氧歧化酶（ＳＯＤ）活几乎不受ＵＶ－Ｂ辐射影响，分析表明，ＵＶ－Ｂ辐射
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| 关 键 词： | 小麦 UV-B辐射 抗氧化系统 |
| 收稿时间： | 1997/12/19 0:00:00 |
| 修稿时间： | 6/9/1998 12:00:00 AM |
Influence of enhanced UV B radiation on antioxidant systems in wheat leaves |
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| CHEN Tuo,REN Hongxu and WANG Xunling.Influence of enhanced UV B radiation on antioxidant systems in wheat leaves[J].Acta Scientiae Circumstantiae,1999,19(4):453-455. |
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| Authors: | CHEN Tuo REN Hongxu and WANG Xunling |
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| Institution: | Department of Biology, Lanzhou University, Lanzhou 730000,Department of Biology, Lanzhou University, Lanzhou 730000 and Department of Biology, Lanzhou University, Lanzhou 730000 |
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| Abstract: | The changes of antioxidant system in wheat leaves exposed to 0(CK),8.82?kJ/m\+2(T\-1) and 12.6?kJ/m\+2(T\-2) were studied.Under the reaction of UV\|B H\-2O\-2 formated,ascorbic acid and glutathione increased;activity of catalase,peroxidase,ascorbat\|specific peroxidase and glutathione reductase enhanced;superoxide dismutase almost remained constant;carotenoid content slightly reduced.The analysis indicates that the accumulation of H\-2O\-2 induced by UV\|B radiation may influence the biosynthsis of antioxidant systems. |
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| Keywords: | wheat ( Tritucum aestivum L ) UV\|B radiation antioxidant systems |
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