| 螺旋藻对短期增强UV-B辐射的生理生化响应 |
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| 引用本文： | 薛林贵,石小霞,褚可成,陈志梅,李师翁. 螺旋藻对短期增强UV-B辐射的生理生化响应[J]. 中国水产科学, 2011, 18(5): 1108-1114 |
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| 作者姓名： | 薛林贵 石小霞 褚可成 陈志梅 李师翁 |
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| 作者单位： | 兰州交通大学化学与生物工程学院; |
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| 基金项目： | 国家自然科学基金项目(3087038430960063); 甘肃省科技支撑计划项目(090NKCA079) |
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| 摘 要： | 通过生物化学和对比分析的方法,研究了短期增强UV-B辐射对钝顶螺旋藻(Spirulina platensis)794光合色素、丙二醛(MDA)、类菌孢素氨基酸(MAAs)以及脯氨酸含量的影响。研究结果显示,与未经过UV-B辐射处理的藻细胞相比,增强的UV-B(240μW/cm2)辐射可导致藻细胞叶绿素a和类胡萝卜素以及藻胆蛋白含量下降,以及MDA含量显著变化(P<0.05),表明螺旋藻对UV-B辐射敏感,UV-B辐射对藻细胞光合色素具有抑制和破坏作用,对螺旋藻的膜系统也产生重要影响。而UV-B辐射可导致MAAs含量增加,脯氨酸含量随辐射时间的延长而提高,说明增强UV-B辐照能诱导藻细胞屏蔽色素合成以及抗逆物质脯氨酸的累积,这可能是螺旋藻对UV-B胁迫所做出的适应性反应。
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| 关 键 词： | 螺旋藻 UV-B 光合色素 MDA 脯氨酸 MAAs |
| 修稿时间： | 2011-10-08 |
Physiological and biochemical responses of Spirulina platensis to short-term enhanced UV-B radiation |
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| XUE Lingui,SHI Xiaoxi,CHU Kecheng,CHEN Zhimei,LI Shiweng. Physiological and biochemical responses of Spirulina platensis to short-term enhanced UV-B radiation[J]. Journal of Fishery Sciences of China, 2011, 18(5): 1108-1114 |
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| Authors: | XUE Lingui SHI Xiaoxi CHU Kecheng CHEN Zhimei LI Shiweng |
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| Affiliation: | XUE Lingui,SHI Xiaoxia,CHU Kecheng,CHEN Zhimei,LI Shiweng School of Chemical and Biological Engineering Lanzhou Jiaotong University,Lanzhou 730070,China |
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| Abstract: | The amount of UV-B radiation reaching the earth's surface is increasing due to attenuation of the stratospheric ozone.Although the release of ozone-depleting material has declined significantly in the past decade,there is a considerable lag in the recovery of the ozone layer.Cyanobacteria are the oldest photosynthetic pro-karyotes and play an important role in the aquatic ecosystem.UV-B can penetrate water to a depth sufficient to disrupt aquatic ecosystems.For example,the depth of water required to remove ... |
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| Keywords: | Spirulina platensis UV-B MAAs photosynthetic pigment MDA proline |
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