| 水稻、小麦和油菜种子萌发POD与CAT对酸雨胁迫的响应 |
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| 引用本文： | 王丽红,黄晓华,周青.水稻、小麦和油菜种子萌发POD与CAT对酸雨胁迫的响应[J].环境科学,2005,26(6):123-125. |
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| 作者姓名： | 王丽红 黄晓华 周青 |
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| 作者单位： | 1. 江南大学工业生物技术教育部重点实验室,无锡,214036
2. 南京师范大学化学与环境科学学院,南京,210097 |
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| 基金项目： | 国家发展与改革委员会稀土项目(GFZ040628);国家自然科学基金项目(20471030) |
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| 摘 要： | 研究了pH 2.5～5.0模拟酸雨对水稻(O.sativa)、小麦(T.aestivum)和油菜(B.chinensis var.oleifera)种子萌发过程中POD、CAT活性影响.静态与动态实验结果表明,酸雨胁迫下,3类种子萌发时CAT与POD活性的变化幅度是水稻(28.8%,31.7%)<小麦(34.7%,48.3%)<油菜(79.3%,50.0%);CAT与POD与CK达到差异显著水平(p<0.05)的胁迫强度是水稻(pH3.5)>小麦(pH4.0)>油菜(pH5.0),说明保护酶抗酸雨能力是水稻>小麦>油菜.相同胁迫强度下,水稻、小麦和油菜种子CAT变幅
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| 关 键 词： | 酸雨胁迫 水稻 小麦 油菜 萌发 POD CAT |
| 文章编号： | 0250-3301（2005）06-0123-03 |
| 收稿时间： | 2004-12-26 |
| 修稿时间： | 3/3/2005 12:00:00 AM |
Response of POD and CAT During Seeds of Rice,Wheat and Rape Germination on Acid Rain Stress |
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| WANG Li-hong,HUANG Xiao-hua and ZHOU Qing.Response of POD and CAT During Seeds of Rice,Wheat and Rape Germination on Acid Rain Stress[J].Chinese Journal of Environmental Science,2005,26(6):123-125. |
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| Authors: | WANG Li-hong HUANG Xiao-hua and ZHOU Qing |
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| Institution: | 1.The Key Lab. of Industrial Biotechnology, Ministry of Education, Southern Yangtze University, Wuxi 214036, China; 2.College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097,China |
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| Abstract: | The effects of simulated acid rain (pH 2.5 - 5.0) on the activities of POD and CAT were investigated during germination of rice (O. sativa), wheat (T. aestivum) and rape (B. chinensis var. oleifera) seeds. Compared with the control (CK), the amplitude of the change in the activity of CAT and POD is that rice (28.8%, 31.7%) < wheat (34.7%, 48.3%) < rape (79.3%, 50.0%), respectively. The pH significantly different (p < 0.05) from CK follows the order: rice (3.5) > wheat (4.0) > rape (5.0). All of these revealed that the ability of resisting acid rain stress is that rice is stronger than wheat and rape is the worst. Under the same condition, the amplitude of the change in the activity of CAT is more sensitivity toward acid rain stress than that of POD. The difference in free radicals removed by these 3 species is one of the reasons why the germinating indexes behaved differently. |
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| Keywords: | acid rain stress rice wheat rape germination POD CAT |
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