| 小麦幼苗叶片活性氧清除能力对干旱胁迫的响应 |
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| 引用本文： | 谭晓荣,吴兴泉,戴媛,杜书文,孔娟.小麦幼苗叶片活性氧清除能力对干旱胁迫的响应[J].河南农业科学,2007(1):27-30. |
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| 作者姓名： | 谭晓荣 吴兴泉 戴媛 杜书文 孔娟 |
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| 作者单位： | 河南工业大学,生物工程学院,河南,郑州,450052 |
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| 基金项目： | 河南省教育厅自然科学基金 |
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| 摘 要： | 研究了不同干旱胁迫方式,即间断干旱胁迫和持续干旱胁迫对小麦幼苗叶片活性氧清除能力的影响,测定了3种活性氧羟自由基(.OH),过氧化氢(H2O2)和超氧阴离子自由基(O2.-)]清除能力的变化。结果表明,正常生长小麦的叶片具有一定的清除活性氧(.OH,H2O2,O2.-)的能力;2种干旱方式均导致小麦.OH和O2.-清除能力上升,复水后仍维持在较高水平,2种干旱方式均导致小麦H2O2清除能力下降,复水后仍低于正常水平;根和叶对相同处理表现出不同的反应;与间断干旱比较,持续干旱处理使小麦表现出更强的活性氧清除能力,对小麦活性氧清除能力的影响较大且延续时间长,具有胁迫后效应。
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| 关 键 词： | 小麦 幼苗叶片 干旱胁迫 活性氧 清除能力 |
| 文章编号： | 1004-3268(2007)01-0027-04 |
| 修稿时间： | 2006-07-07 |
Response of Scavenging Reactive Oxygen Species of Wheat Seedling Leaves to Drought Stress |
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| TAN Xiao-rong,WU Xing-quan,DAI Yuan,DU Shu-wen,KONG Juan.Response of Scavenging Reactive Oxygen Species of Wheat Seedling Leaves to Drought Stress[J].Journal of Henan Agricultural Sciences,2007(1):27-30. |
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| Authors: | TAN Xiao-rong WU Xing-quan DAI Yuan DU Shu-wen KONG Juan |
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| Institution: | Bioteehnology Department, Henan University of Technology, Zhengzhou 450052,China |
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| Abstract: | Dynamic changes of scavenging reactive oxygen species(ROS:·OH,H_2O_2,O~-·_2)of wheat seedling leaves were studied during 2 different kinds of water stress(discontinuous and continuous drought stress).Results indicated that the wheat seedlings under normal growth condition were able to scavenge ROS to some extent.Both discontinuous and continuous drought stress increased scavenging capacities for·OH and O~-·_2 and decreased scavenging capacities for H_2O_2 of wheat seedlings.There was different response between the roots and the leaves to drought stress.Continuous drought-stress had greater effect than discontinuous one did. |
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| Keywords: | Wheat Seedling leaf Drought stress Reactive oxygen species Scavenging capacity |
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