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cyp11A1 Canola Plants under Short Time Heat Stress Conditions

机译：cyp11A1双低油菜籽植物在短时热胁迫条件下的生长

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摘要

In order to investigate the high temperature tolerance of spring canola plants (Brassica napus L.) constitutively expressing cyp11A1 gene which encodes bovine cytochrome P450_(SCC) the growth features were analyzed under short time heat stress (42℃) in growth chamber. Earlier it was documented that results of the heat tolerance test positively correlated with improvement of high temperature resistance in field trial. Higher relative water content (by 13%) and superoxide dismutase (SOD) activity, lower electrolyte leakage (up 1.4-fold) and smaller increase in chlorophyll a and carotenoid contents in cyp11A1 canola leaves in comparison with wild-type plants under stress allowed to conclude cyp11A1 plants are more tolerant to high temperature than the control ones. We suppose that SOD activity increase which revealed in our transgenic canola in normal condition plays the defining role in the biochemical alterations in plant metabolism for the thermotolerance improvement. SOD activity increment could be caused by heterologous cytochrome P450_(SCC) activity which resulted in the superoxide radical formation. Cyp11A1 canola plants might be resistant to the other stress conditions of different origin.
机译：为了研究组成性表达编码细胞色素P450_（SCC）的cyp11A1基因的春低芥菜油菜（Brassica napus L.）的高温耐受性，分析了短时热胁迫（42℃）在生长室内的生长特征。早先有文献记载，在现场试验中，耐热试验的结果与耐高温性呈正相关。与野生型植物相比，在允许胁迫的条件下，cyp11A1双低油菜叶片的相对水含量（增加13％）和超氧化物歧化酶（SOD）活性，电解质泄漏降低（上升1.4倍）以及叶绿素a和类胡萝卜素含量的增加幅度较小。结论cyp11A1植物比对照植物更耐高温。我们假设正常条件下在我们的转基因油菜中显示的SOD活性增加在植物代谢中的生化变化中具有决定性作用，以提高耐热性。 SOD活性的增加可能是由于异源细胞色素P450_（SCC）活性导致超氧自由基的形成。 Cyp11A1双低油菜籽植物可能对不同来源的其他胁迫条件具有抗性。

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  • 来源
    《Cytology and genetics》 |2014年第5期|279-284|共6页
  • 作者

    L. O. Sakhno; M. S. Slyvets; M. V. Kuchuk;

  • 作者单位

    Institute of Cell Biology and Genetic Engineering, National Academy of Sciences, ul. Academika Zabolotnogo 148, Kyiv, 03680 Ukraine;

    Institute of Cell Biology and Genetic Engineering, National Academy of Sciences, ul. Academika Zabolotnogo 148, Kyiv, 03680 Ukraine ,National Technical University of Ukraine 'Kyiv Polytechnic Institute', pr. Peremogy 37, Kyiv, 03056 Ukraine;

    Institute of Cell Biology and Genetic Engineering, National Academy of Sciences, ul. Academika Zabolotnogo 148, Kyiv, 03680 Ukraine;

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  • 正文语种 eng
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  • 关键词

    Brassica napus; cyp11A1; cytochrome P450_(SCC); photosynthetic pigments; heat stress; SOD;

    机译：甘蓝型油菜;cyp11A1;细胞色素P450_（SCC）;光合色素;热应激;草皮;

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