| 水分胁迫下玉米叶片乙烯释放和多胺含量的变化及其与玉米耐旱性的关系 |
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| 引用本文： | 宋凤斌,戴俊英.水分胁迫下玉米叶片乙烯释放和多胺含量的变化及其与玉米耐旱性的关系[J].东北农业大学学报,2002,33(4):345-352. |
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| 作者姓名： | 宋凤斌 戴俊英 |
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| 作者单位： | 1. 中国科学院长春地理研究所,长春,130021
2. 沈阳农业大学农学院农学系,沈阳,110161 |
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| 摘 要： | 水分胁迫导致玉米叶片乙烯(C2H4)释放和多胺的含量发生变化,轻度和中度胁迫下。玉米叶片的乙烯释放先缓慢增加而后下降,多胺的含量先降后升;重度水分胁迫下,乙烯的释放先是大幅度增加而后迅速下降,多胺则是大幅度下降而后缓慢回升。叶面喷施乙烯合成抑制剂AOAA(Amino oxiacetic acid)时,轻度和中度水分胁迫下,叶片乙烯释放量受到明显抑制,低于对照水平,多胺含量转降为升;重度水分胁迫下,乙烯释放量和多胺的含量均接近对照水平。外源多胺预处理降低了水分胁迫下玉米叶片中叶绿素、DNA和蛋白质含量的下降幅度。乙烯加速了水分胁迫下玉米植株的衰老速率,而多胺则有一个相反的效应。从而可增强玉米的耐旱性。水分胁迫下玉米叶片中存在乙烯和多胺的相互制约关系,多胺可能参与DNA和蛋白质合成的调节。
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| 关 键 词： | 水分胁迫 玉米叶片 玉米耐旱性 乙烯释放 多胺含量 |
| 文章编号： | 1005-9369(2002)04-0345-08 |
| 修稿时间： | 2001年9月13日 |
Relationship between changes of ethylene release and polyamines content in maize leaves and drought-tolerance in maize under water stress |
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| SONG Feng-bin,DAI Jun-yingchangchun Institute of Geography,the Chinese Academy of Sciences,Changchun, PRC.Relationship between changes of ethylene release and polyamines content in maize leaves and drought-tolerance in maize under water stress[J].Journal of Northeast Agricultural University,2002,33(4):345-352. |
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| Authors: | SONG Feng-bin DAI Jun-yingchangchun Institute of Geography the Chinese Academy of Sciences Changchun PRC |
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| Institution: | SONG Feng-bin,DAI Jun-yingchangchun Institute of Geography,the Chinese Academy of Sciences,Changchun,130021 PRC Department of Agronomy,Shenyang Agricultural university,Shenyang,110161 PRC |
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| Abstract: | Ethylene release increased firstly following the decline afterwards, polyamine content decreased firstly, and then elevated in maize leaves under light and moderate water stress, ethylene release significantly enhanced firstly following sharp decline, polyamine content decreased swiftly form beginning and then increased slowly. Ethylene release was inhibited by amino oxiacetic acid (AOAA) which can inhibit ethylene biosynthesis and its release amount was lower than that of control, but polyamine content was changed from decline to increase in maize leaves under light and moderate water stress, while ethylene release and polyamine content under severe water stress. Exogenous polyamine pretreatments could cause the declines of chlorophyll, DNA and protein contents hindered. Ethylene and polyamine could condition each other in maize leaves under water stress, while polyamine could adjust the biosynthesis of DNA and protein. |
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| Keywords: | water stress maize leaves drought-tolerance of maize ethylene release polyamine content |
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