| 镧对酸雨胁迫下水稻萌发种子POD与质膜透性动态变化的影响 |
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| 引用本文： | 彭莹,王慧敏,周青.镧对酸雨胁迫下水稻萌发种子POD与质膜透性动态变化的影响[J].环境化学,2009,28(2). |
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| 作者姓名： | 彭莹 王慧敏 周青 |
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| 作者单位： | 1. 江南大学环境与土木工程学院,无锡,214122
2. 江南大学工业生物技术教育部重点实验室,无锡,214122;江南大学环境与土木工程学院,无锡,214122 |
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| 基金项目： | 江苏省教育厅资助项目 |
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| 摘 要： | 采用模拟酸雨和镧复合处理水稻(O.sativao)种子,测定不同酸雨胁迫强度下镧对种子质膜透性(E%)和过氧化物酶(POD)活性的影响.结果表明,用pH4.0和pH2.5的酸雨连续胁迫7d,随着胁迫时间的增加,水稻种子的质膜透性呈现先减小后逐渐增大再减小的趋势,过氧化物酶(POD)活性一直保持升高的趋势.经镧处理后,水稻种子的质膜透性变小,POD活性有所增高.而在第5天和第3天,pH=2.5和pH:4.0酸雨胁迫下的水稻种子换用隔夜自来水培养,使得其质膜透性有所减少,过氧化物酶活性得以回升.镧对种子的萌发具有一定的防护效应,减轻了酸雨对萌发期间的伤害程度,增强了种子抗酸雨的能力.
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| 关 键 词： | 镧 酸雨 水稻 过氧化物酶 质膜透性 |
EFFECT OF LANTHANUM ON POD AND MEMBRANE PERMEABILITY OF RICE UNDER ACID RAIN STRESS |
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| PENG Ying,WANG Hui-min,ZHOU Qing.EFFECT OF LANTHANUM ON POD AND MEMBRANE PERMEABILITY OF RICE UNDER ACID RAIN STRESS[J].Environmental Chemistry,2009,28(2). |
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| Authors: | PENG Ying WANG Hui-min ZHOU Qing |
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| Institution: | 1The Key Lab.of Industrial Biotechnology;Ministry of Education;Jiangnan University;Wuxi;214122;China;2School of Environmental and Civil Engineering;China |
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| Abstract: | To explore if rare earth element lanthanum could protect from the damage of the germination of rice seed under different acid rain stresses,the activity of peroxidase(POD) and the membrane permeability were investigated.Two simulated acid rain(SAR) solutions of pH 2.5 and 4.0,and neutral solution as control group were used in this study.Rice seeds pretreated with lanthanum were placed in culture dishes and kept at the normal temperature,in which each treatment group involved three dishes and each dish recei... |
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| Keywords: | lanthanum acid rain rice peroxidase membrane permeability |
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