| 过氧化氢酶和抗坏血酸过氧化物酶对镉胁迫下水稻根系生长的影响 |
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| 引用本文： | 宋新华,王凯,郭蕾蕾,赵凤云.过氧化氢酶和抗坏血酸过氧化物酶对镉胁迫下水稻根系生长的影响[J].农业科学与技术,2011(9):1256-1259. |
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| 作者姓名： | 宋新华 王凯 郭蕾蕾 赵凤云 |
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| 作者单位： | 山东理工大学生命科学学院;淄博市科学技术情报研究所 |
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| 基金项目： | Supported by National Natural Science Foundation of China(30671126)~~ |
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| 摘 要： | 目的]研究过氧化氢酶（CAT）和抗坏血酸过氧化物酶（APX）与镉胁迫水稻根系生长发育的关系。方法]以水稻中花11号为材料,研究Cd、Cd＋CAT抑制剂和Cd＋APX抑制剂处理条件下水稻幼苗的变化。结果]在Cd胁迫下,抑制CAT活性,导致地上部分的生长受到显著抑制,引起不定根和侧根数量的减少,但显著促进了不定根和侧根的伸长生长;同时,初生根和不定根上第一侧根距根尖的距离也比对照的增加。抑制APX活性,水稻的生长变化与CAT抑制剂处理的类似。结论]在正常和胁迫条件下CAT和APX对水稻的生长可能具有重要的调节作用。
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| 关 键 词： | 镉胁迫 过氧化氢酶 抗坏血酸过氧化物酶 |
Effects of Catalase and Ascorbate Peroxidase on the Root Growth of Rice under Cadmium Stress |
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| SONG Xin-hua,WANG Kai,GUO Lei-lei,ZHAO Feng-yun.Effects of Catalase and Ascorbate Peroxidase on the Root Growth of Rice under Cadmium Stress[J].Agricultural Science ＆ Technology,2011(9):1256-1259. |
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| Authors: | SONG Xin-hua WANG Kai GUO Lei-lei ZHAO Feng-yun |
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| Institution: | 1*1.School of Life Sciences,Shandong University of Technology,Zibo 255049;2.Zibo Institute of Science and Technology Information,Zibo 255040 |
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| Abstract: | Objective] The research aimed to study the correlations between catalase(CAT) and ascorbate peroxidase(ASP) and the growth and development of rice roots under cadmium stress.Method] Taking rice variety Zhonghua No.11 as materials,the changes of rice seedlings under the treatment conditions of Cd,Cd+CAT inhibitor,Cd+APX inhibitor were studied.Result] Under Cd stress,inhibition of CAT activity caused the significant inhibition on the growth of aerial parts,decreased the number of adventitious roots and lateral roots,but it can significant promote the elongation growth of adventitious roots and lateral roots.Moreover,the length of the first lateral root from root tip on the primary roots and adventitious roots was also increased than control.When APX activity was inhibited,the growth changes of rice were similar with that treated by CAT inhibitor.Conclusion] CAT and APX may play important roles in the regulation of rice root system growth in both non-stress and Cd-stressed rice. |
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| Keywords: | Cd stress Catalase Ascorbate peroxidase |
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