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NaCl胁迫对毛竹叶片的电阻抗图谱参数及膜透性的影响
引用本文:孟昱,张钢,李雪平,高志民.NaCl胁迫对毛竹叶片的电阻抗图谱参数及膜透性的影响[J].武汉植物学研究,2010,28(3):341-346.
作者姓名:孟昱  张钢  李雪平  高志民
作者单位:1. 河北农业大学园艺学院,河北保定,071001;国际竹藤网络中心,国家林业局竹藤科学与技术重点开放实验室,北京,100102
2. 河北农业大学园艺学院,河北保定,071001
3. 国际竹藤网络中心,国家林业局竹藤科学与技术重点开放实验室,北京,100102
基金项目:十一五林业科技支撑计划专题,国际竹藤网络中心基本科研业务费专项资金 
摘    要:以NaCl胁迫下毛竹(Phyllostachys edulis)实生苗叶片为材料,测定其电阻抗图谱参数和膜透性的变化,通过膜透性与电阻抗图谱参数间的相关性,来证明电阻抗图谱法研究竹子受胁迫程度的有效性。结果表明:随着盐浓度的升高,胞外电阻、胞内电阻和弛豫时间呈现先减小、后增加、再减小的特征,而弛豫时间分布系数表现恰好相反;叶片细胞膜相对透性逐渐增大,脯氨酸的含量先逐渐增大,然后减小。相关分析表明:胞内电阻、胞外电阻、弛豫时间与脯氨酸含量呈极显著负相关(p〈0.01);胞外电阻、弛豫时间与膜相对透性呈显著负相关(p〈0.05)。电阻抗图谱参数能够有效地表示毛竹受NaCl胁迫的程度,电阻抗图谱法将是竹子逆境胁迫研究的一种有效方法。

关 键 词:毛竹叶片  NaCl胁迫  电阻抗图谱  膜透性  脯氨酸

Effect of NaCl Stress on Electrical Impedance Spectroscopy Parameters and Membrane Permeability of Moso Bamboo (Phyllostachys edulis)Seedling Leaves
MENG Yu,ZHANG Gang,LI Xue-Ping,GAO Zhi-Min.Effect of NaCl Stress on Electrical Impedance Spectroscopy Parameters and Membrane Permeability of Moso Bamboo (Phyllostachys edulis)Seedling Leaves[J].Journal of Wuhan Botanical Research,2010,28(3):341-346.
Authors:MENG Yu  ZHANG Gang  LI Xue-Ping  GAO Zhi-Min
Affiliation:1.College of Horticulture,Agricultural University of Hebei,Baoding,Hebei 071001,China;2.International Center for Bamboo and Rattan,Key Laboratory of Science and Technology of Bamboo and Rattan,State Forestry Administration,Beijing 100102,China)
Abstract:The relationship between electrical impedance parameter and relative electrolyte leakage of Moso bamboo(Phyllostachys edulis) seedling leaves under NaCl stress was mea-sured.Results showed that with the increasing concentration of NaCl,extracellular resistance,intracellular resistance,and relaxation time initially decreased,then increased,and then finally decreased again.Conversely,the distribution coefficient of relaxation time showed the opposite pattern.Membrane permeability increased gradually,while proline firstly increased then decreased.There were significant negative correlations among extracellular resistance,intracellular resistance,relaxation time,and proline content.A significant negative correlation was found among extracellular resistance,relaxation time,and membrane permeability.These results indicate that the extent of Moso bamboo leaves stressed by NaCl was reflected effectively through electrical impedance parameter spectroscopy,which is an effective method to study bamboo adversity stress.
Keywords:Moso bamboo leaves  NaCl stress  Electrical impedance spectroscopy  Membrane permeability  Proline
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