| 水杨酸通过提高抗氧化酶系统活力增强拟南芥悬浮细胞的耐寒性 |
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| 引用本文： | 石玉兰,陈宣,岳君,安黎哲,李新荣,陈国雄.水杨酸通过提高抗氧化酶系统活力增强拟南芥悬浮细胞的耐寒性[J].冰川冻土,2010,32(6). |
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| 作者姓名： | 石玉兰 陈宣 岳君 安黎哲 李新荣 陈国雄 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,极端环境抗逆和生物技术实验室,甘肃,兰州,730000;兰州大学,生命科学学院,甘肃,兰州,730000;中国科学院,寒区旱区环境与工程研究所,极端环境抗逆和生物技术实验室,甘肃,兰州,730000;兰州大学,生命科学学院,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院寒区旱区环境与工程研究所"青年人才基金项目" |
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| 摘 要： | 与未经水杨酸(SA)处理的低温对照相比,0.1 mmol.L-1SA处理提高了拟南芥悬浮细胞在整个低温胁迫期间超氧化物歧化酶(SOD),过氧化物酶(POD)和过氧化氢酶(CAT)的活性,并在低温胁迫初期提高了细胞抗坏血酸过氧化物酶(APX)的活性.在抗氧化酶系统活力提升的同时,还伴随着相对电导率的降低和丙二醛(MDA)含量的减少,即细胞膜状态的恢复.相关性研究显示,膜状态的恢复与抗氧化酶系统中各类酶活力的增加呈显著正相关.上述结果表明,SA可以通过提高拟南芥悬浮细胞的抗氧化酶系统活力避免氧化损伤,从而协助膜系统在低温胁迫下的自我恢复,使细胞抗寒性得以增强.
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| 关 键 词： | 低温胁迫 水杨酸 抗氧化酶系统 拟南芥悬浮细胞 耐寒性 |
Enhancing the Chilling-Tolerance of Suspension-Cultured Cells of Arabidopsis through Improving the Activities of Antioxidant Enzymes by Salylic Acid Treatment |
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| SHI Yu-lan,CHEN Xuan,YUE Jun,AN Li-zhe,LI Xin-rong,CHEN Guo-xiong.Enhancing the Chilling-Tolerance of Suspension-Cultured Cells of Arabidopsis through Improving the Activities of Antioxidant Enzymes by Salylic Acid Treatment[J].Journal of Glaciology and Geocryology,2010,32(6). |
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| Authors: | SHI Yu-lan CHEN Xuan YUE Jun AN Li-zhe LI Xin-rong CHEN Guo-xiong |
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| Institution: | SHI Yu-lan1,CHEN Xuan2,YUE Jun2,AN Li-zhe1,2,LI Xin-rong1,CHEN Guo-xiong1(1.Extreme Stress Resistance and Biotechnology Laboratory,CAREERI,CAS,Lanzhou Gansu 730000,China,2.School of Life Sciences,Lanzhou University,China) |
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| Abstract: | Salylic acid(SA) is one of the widely distributed phenolic compounds,which plays an important role in improving the stress-tolerance of plants.In order to confirm its effect on the chilling-tolerance of model plants,suspension-cultrued cells of Arabidopsis was used as experimental material and the activities of several important antioxidant enzymes and the status of cell membranes between SA-treated and-untreated cells under chilling stress were contrasted.Moreover,cells under normal conditions were synchro... |
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| Keywords: | chilling stress salylic acid antioxidant enzymes suspension-cultured cells of Arabidopsis chilling-tolerance |
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