| 根施外源多胺抑制剂MGBG和D-ARG对小麦幼苗抗旱性的影响 |
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| 引用本文： | 关军锋,曹君霞,及华,冯云霄,李丽梅,孙玉龙.根施外源多胺抑制剂MGBG和D-ARG对小麦幼苗抗旱性的影响[J].华北农学报,2007,22(5):24-26. |
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| 作者姓名： | 关军锋 曹君霞 及华 冯云霄 李丽梅 孙玉龙 |
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| 作者单位： | 河北省农林科学院遗传生理研究所,河北,石家庄,050051 |
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| 基金项目： | 河北省自然科学基金资助项目(300297) |
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| 摘 要： | 在25%PEG-6000模拟干旱胁迫下,使用MGBG(1 mmol/L)、D-ARG(1 mmol/L)、L-ARG(1 mmol/L)处理二叶期的小麦根系72 h,结果表明,MGBG和D-ARG降低叶片相对含水量,增强叶片的膜脂过氧化作用,促进叶片和根系的生长,而L-ARG对叶片的含水量影响不大,促进根系的生长,促进叶片膜脂过氧化作用。这些表明,外源多胺抑制剂MGBG和D-ARG抑制根系多胺的形成不利于叶片水分的维持。
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| 关 键 词： | 小麦 根系 多胺抑制剂 抗旱性 |
| 文章编号： | 1000-7091（2007）05-0024-03 |
| 修稿时间： | 2007-03-20 |
Effects of Polyamine Inhibitors MGBG and D-ARG under Root Zone Application on Drought Resistance of Wheat Seedlings |
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| GUAN Jun-feng,CAO Jun-xia,JI Hua,FENG Yun-xiao,LI Li-mei,SUN Yu-long.Effects of Polyamine Inhibitors MGBG and D-ARG under Root Zone Application on Drought Resistance of Wheat Seedlings[J].Acta Agriculturae Boreali-Sinica,2007,22(5):24-26. |
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| Authors: | GUAN Jun-feng CAO Jun-xia JI Hua FENG Yun-xiao LI Li-mei SUN Yu-long |
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| Institution: | Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China |
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| Abstract: | Under simulated drought stress with 25% PEG-6000,the roots of wheat seedlings were subjected by MGBG(1 mmol/L),D-ARG(1 mmol/L)and L-ARG(1 mmol/L)at two-leaf stage,the results showed that MGBG and D-ARG reduced the relative water content(RWC) of leaves,increased membrane lipid peroxidation,and stimulated growth of leaves and roots.However,L-ARG affected less on the RWC,enhanced the root growth and stimulated lipid peroxidation.These suggested that endogenous polyamine play an important role in the regulation of RWC of leaves,and more,inhibiting of root polyamine production will be not beneficial to maintain water content in leaves. |
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| Keywords: | Wheat Root Polyamine inhibitor Drought-resistance |
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