| 增强的UV-B辐射对地木耳中抗逆性物质的影响 |
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| 引用本文： | 王弋博,曲颖,杨亚军.增强的UV-B辐射对地木耳中抗逆性物质的影响[J].冰川冻土,2011,33(3):654-658. |
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| 作者姓名： | 王弋博 曲颖 杨亚军 |
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| 作者单位： | 天水师范学院 生命科学与化学学院,甘肃 天水 741000;兰州大学 生命科学学院,甘肃 兰州7 30000;兰州大学 生命科学学院,甘肃 兰州730000;中国科学院 近代物理研究所,甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目(31060065); 甘肃省自然科学基金项目(3ZS051-A25-026); 中国科学院西部之光“博士资助”项目; 天水师范学院“青兰人才工程”项目资助 |
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| 摘 要： | 实验室条件下模拟兰州地区夏至臭氧层衰减12％、20％和40％时增强的UV-B辐射2.54kJ·m-2·d-1(T1)、4.25 kJ·m-2· d-1 (T2)和8.35 kJ·m-2·d-1(T3),研究了不同强度的UV-B辐射对陆生蓝藻地木耳（Nostoc commune）中的的抗逆性物质光合色素（叶绿素a、类胡...
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| 关 键 词： | 地木耳 UV-B 脯氨酸 海藻糖 光合色素 |
Effects of Enhanced UV-B Radiation on Resistant Substances in Nostoc commune |
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| WANG Yi-bo,QU Ying,YANG Ya-jun.Effects of Enhanced UV-B Radiation on Resistant Substances in Nostoc commune[J].Journal of Glaciology and Geocryology,2011,33(3):654-658. |
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| Authors: | WANG Yi-bo QU Ying YANG Ya-jun |
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| Institution: | WANG Yi-bo1,2,QU Ying2,3,YANG Ya-jun1,2(1.School of Life Science and Chemistry,Tianshui Normal University,Tianshui Gansu 741000,China,2.School of Life Science,Lanzhou University,Lanzhou Gansu 730000,3.Institute of Modern Physics,Chinese Academy of Sciences,China) |
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| Abstract: | The contents of photosynthetic pigment(Chla,carotenoid and phycobilin),free proline,soluble polysaccharide and trehalose in Nostoc commune and terrestrial blue alga were studied in glasshouse condition irradiated with biological effective UV-B radiation of 2.54 kJ·m-2·d-1(T1),4.25 kJ m-2·d-1(T2) and 8.35 kJ·m-2·d-1(T3)(stimulating 12%,20% and 40% attenuation in stratospheric ozone at Lanzhou in summer,respectively).The results indicated that the contents of photosynthetic pigment accumulated under low dosage and short time treatment with UV-B radiation,but they would reduce under high dosage and long time treatment.The content of free proline and trehalose accumulated with T1,T2 and T3 UV-B radiation treatment.Comparing the increasing rate of the three treatments,one can see that the increasing rate was the maximum for T3,followed by that for T2,and the minimum was for T1.The accumulation of free proline and trehalose showed a positive correlation with UV-B radiation dosage.With the degradation of soluble polysaccharide in Nostoc commune,trehalose increased under UV-B radiation.One of the reasons of the adaption of Nostoc commune to enhanced UV-B radiation is the effective accumulation of resistant substances. |
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| Keywords: | Nostoc commune UV-B radiation photosynthetic pigment free proline trehalose |
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