| 外源GABA对NaCl胁迫下番茄幼苗活性氧代谢及叶绿素荧光参数的影响 |
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| 引用本文： | 罗黄颖,高洪波,夏庆平.外源GABA对NaCl胁迫下番茄幼苗活性氧代谢及叶绿素荧光参数的影响[J].河北农业大学学报,2011,34(3):37-40,84. |
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| 作者姓名： | 罗黄颖 高洪波 夏庆平 |
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| 作者单位： | 河北农业大学,园艺学院,河北,保定,071001 |
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| 基金项目： | 国家自然科学基金资助项目(30900994) |
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| 摘 要： | 采用水培法,研究了外源添加2.5 mmol/L GABA(γ-氨基丁酸)对NaCl胁迫下‘金棚一号'番茄(Lycopersicon esculentum Mill.)幼苗活性氧(ROS)代谢及叶绿素荧光参数的影响.结果表明:NaCl胁迫处理导致番茄幼苗ROS积累,同时抗氧化酶(SOD、CAT)活性显著提高,但抗氧化酶活...
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| 关 键 词： | 番茄 GABA NaCl胁迫 活性氧代谢 叶绿素荧光参数 |
Effects of exogenous GABA on reactive oxygen species metabolism and chlorophyll fluorescence parameters in tomato seedlings under NaCl stress |
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| LUO Huang-ying,GAO Hong-bo,XIA Qing-ping.Effects of exogenous GABA on reactive oxygen species metabolism and chlorophyll fluorescence parameters in tomato seedlings under NaCl stress[J].Journal of Agricultural University of Hebei,2011,34(3):37-40,84. |
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| Authors: | LUO Huang-ying GAO Hong-bo XIA Qing-ping |
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| Institution: | LUO Huang-ying,GAO Hong-bo,XIA Qing-ping(College of Horticulture,Agricultural University of Hebei,Baoding 071001,China) |
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| Abstract: | The paper investigated the effects of exogenous GABA application to salinized nutrient solution on reactive oxygen species(ROS) metabolism and chlorophyll fluorescence parameters in the seedlings of one tomato cultivar 'Jin Peng No.1' under NaCl stress.The results showed that seedlings grown in nutrient solution salinized with NaCl increased O·-2productive rate,MDA content and antioxidant enzyme(SOD,CAT) activities,but the increasing range of antioxidant enzyme activities was lower than ROS productive rate,which lead to decreased capability of photosystem in tomato seedlings.Exogenous GABA application treatments relieved the harm of NaCl stress to seedlings growth,meanwhile O·-2 productive rate and MDA content in leaves and roots with were significantly lower than NaCl treatment.Compared with NaCl treatment,the activities of SOD,POD,CAT and Fv/Fm,ΦPSII,qP were significantly increased,but NPQ was obviously decreased with GABA application.The findings suggested that exogenous GABA application played an important role for enhancing salt tolerance in tomato seedlings. |
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| Keywords: | tomato GABA NaCl stress active oxygen metabolism chlorophyll fluorescence parameters |
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