| 外源一氧化氮对铅胁迫下高羊茅生长和无机离子含量的影响 |
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| 引用本文： | 张远兵,刘爱荣,张雪平,黄守程.外源一氧化氮对铅胁迫下高羊茅生长和无机离子含量的影响[J].广西植物,2009,29(3):360-365. |
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| 作者姓名： | 张远兵 刘爱荣 张雪平 黄守程 |
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| 作者单位： | 安徽科技学院,生命科学学院,安徽,凤阳,233100 |
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| 基金项目： | 安徽省自然科学基金，安徽省科技厅年度重点科研项目 |
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| 摘 要： | 研究了外源一氧化氮对Pb2+1000mg/L胁迫下高羊茅生长及无机离子含量变化的影响。结果表明,与对照相比,单用Pb2+胁迫使高羊茅鲜重、干重、含水量、根系活力和无机离子如NO-3、K+、Na+、Ca2+、Mg2+和Mn2+含量均下降,而其根的丙二醛含量和质膜透性、Pb2+含量均上升;与单用Pb2+胁迫相比,用SNP(Sodium Nitroprusside,NO供体)0.01～1mmol/L处理Pb2+胁迫下高羊茅,其鲜重、干重、含水量、根系活力、无机离子如NO3-、K+、Na+、Ca2+、Mg2+和Mn2+含量呈先上升后下降的变化趋势,而根的丙二醛含量和质膜透性、Pb2+含量呈相反的变化趋势。综合结果表明,外源NO对Pb2+胁迫下高羊茅生长影响具有剂量效应,适宜浓度能缓解铅毒害,提高耐铅性。
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| 关 键 词： | 高羊茅 一氧化氮 Pb胁迫 无机离子 生长 |
Effect of exogenous NO on the growth and
inorganic ion content of Festuca arundinacea
seedlings under Pb2+ stress |
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| ZHANG Yuan-Bing,LIU Ai-Rong,ZHANG Xue-Ping,HUANG Shou-Cheng.Effect of exogenous NO on the growth and
inorganic ion content of Festuca arundinacea
seedlings under Pb2+ stress[J].Guihaia,2009,29(3):360-365. |
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| Authors: | ZHANG Yuan-Bing LIU Ai-Rong ZHANG Xue-Ping HUANG Shou-Cheng |
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| Institution: | College of Life Science;Anhui Science and Technology University;Fengyang 233100;China |
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| Abstract: | Effects of exogenous nitric oxide(NO)on the growth and some inorganic ions changes of Festuca arundinacea seedlings under Pb2+ stress(1 000 mg/L)were investigated.The result showed that:in comparison with the control,Pb2+ stress decreased the fresh weight,dry weight,water content,the root activity,inorganic ions contents such as NO-3,K+,Na+,Ca2+,Mg2+and Mn2+,but increased the root MDA content,the root membrane permeability and Pb2+content of F.arundinacea seedlings.In comparison with Pb2+ stress,SNP 0.01-1 ... |
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| Keywords: | Festuca arundinacea NO Pb2+ stress inorganic ions growth |
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