华北农学报 ›› 2010, Vol. 25 ›› Issue (1): 136-140. doi: 10.7668/hbnxb.2010.01.027

所属专题: 水稻 抗旱节水

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干旱胁迫下茉莉酸甲酯对水稻叶片质膜透性及无机离子含量的影响

董桃杏1,2, 蔡昆争1, 曾任森1   

  1. 1. 华南农业大学,农业部生态农业重点开放实验室, 广东广州 510642;
    2. 湖北第二师范学院,化学与生命科学学院, 湖北武汉 430205
  • 收稿日期:2009-08-08 出版日期:2010-02-28
  • 通讯作者: 蔡昆争(1970-),男,云南曲靖人,副教授,博士,主要从事农业生态研究.
  • 作者简介:董桃杏(1982-),女,湖北黄冈人,硕士,主要从事生态学的研究.
  • 基金资助:
    教育部博士点基金资助项目(2000065402)

Effects of Methyl Jasmonate on Membrane Permeability and Inorganic Ions Content in Rice Leaves under Drought Stress

DONG Tao-xing11,2, 21, CAI Kun-zheng11   

  1. 1. Key Laboratory of Ecological Agriculture of Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China;
    2. College of Chemistry and Life Science, Hubei University of Education, Wuhan 430205, China
  • Received:2009-08-08 Published:2010-02-28

摘要: 茉莉酸甲酯(MeJA)是植物体内一种具有应答外界刺激,传导逆境信号及启动抗逆基因的天然生理活性物质,提高作物的抗旱性是MeJA的重要生理功能之一.研究了干旱胁迫下施用不同浓度(250,25,0.25μmol/L)MeJA对水稻幼苗的生理调控作用.结果表明,干旱处理后水稻叶片水势和叶绿素含量显著下降,叶片MDA含量、电导率及无机离子(K+,Ca2+,Mg2+)含量均显著上升,而喷施不同浓度的MeJA 则显著提高叶片水势和叶绿素含量,降低质膜透性和叶片无机离子含量,从而增强水稻幼苗的抗旱性.以0.25μmol/L MeJA处理抗旱效果最好,25μmol/L次之,然后是20 μmol/L.

关键词: 茉莉酸甲酯, 干旱, 水稻, 抗旱性

Abstract: Methyl Jasmonate(MeJA)is an important naturally physiological substance that regulates the expression of plant defense genes in response to various environmental stress including drought.Different concentration of MeJA treatment(250,2.5 and 250μmol/L) under drought stress were chosen to study its effect on physiological traits of rice seedlings.Under drought stress condition,leaf water potential and chlorophyll content were significantly decreased,whereas conductivity,the content of MDA and inorganic ions(K+,Ca2+,Mg2+) in rice leaves were significantly increased,these effects could be restrained after spraying various concentration of MeJA(250,2.5,0.25μmol/L),which meant MeJA could increase drought resistance.There existed concentration effect,0.25 μmol/L MeJA had the best effect,2.5 μmol/L took second place,the third was 250μmol/L.

Key words: Methyl Jasmonate, Drought, Rice, Drought resistance

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引用本文

董桃杏, 蔡昆争, 曾任森. 干旱胁迫下茉莉酸甲酯对水稻叶片质膜透性及无机离子含量的影响[J]. 华北农学报, 2010, 25(1): 136-140. doi: 10.7668/hbnxb.2010.01.027.

DONG Tao-xing1,2,CAI Kun-zheng1,ZENG Ren-sen1. Effects of Methyl Jasmonate on Membrane Permeability and Inorganic Ions Content in Rice Leaves under Drought Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(1): 136-140. doi: 10.7668/hbnxb.2010.01.027.

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