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La(Ⅲ)对UV-B辐射胁迫下大豆幼苗光氧化作用的影响

彭倩;周青;叶亚新;吕东岳;   

  1. 江南大学工业生物技术教育部重点实验室,江南大学工业生物技术教育部重点实验室,江南大学工业生物技术教育部重点实验室,江南大学工业生物技术教育部重点实验室 无锡214222,无锡214222,无锡214222苏州科技学院生物学系,无锡214222
  • 出版日期:2007-08-10 发布日期:2007-08-10
  • 基金资助:
    国家自然科学基金(30570323);; 国家发改委稀土专项基金(IFZ20051210)

Influence of La on Light Oxidation of Soybean Seedling under Ultraviolet-B Stress

PENG Qian1, ZHOU Qing1, YE Ya-xin1,2, Lü Dong-yue1(1. Key Laboratory of Industrial Biotechnology, Ministry of Education, Southern Yangtze University, Wuxi 214222, China; 2. Department of Biology, Suzhou Science and Technology College)   

  • Online:2007-08-10 Published:2007-08-10

摘要: 采用水培实验法研究了稀土La(Ⅲ)对紫外辐射(UV-B:0.15Wm-2,0.45Wm-2)胁迫下大豆(Glycinemax)幼苗体内O2-和H2O2积累、抗坏血酸过氧化物酶(AsA-POD)活性变化和叶绿素(chl)光氧化降解的影响。实验结果表明:La(Ⅲ)可降低大豆幼苗体内的O2-和H2O2含量、提高AsA-POD的活性,从而减轻光氧化作用对大豆幼苗chl的降解及对植株的伤害。

关键词: La, UV-B辐射, 大豆幼苗, 光氧化作用

Abstract: The influence of Lanthanum (La) on light oxidation of soybean (Glycine max) seedling under elevated ultraviolet-B radiation (UV-B: 0.15Wm-2, 0.45Wm-2) was studied. The accumulation of O-2, H2O2, the changes of activity of AsA-POD and the effects of chlorophyll degradation caused by light oxidation. It was concluded that La could reduce the content of O-2 and H2O2 in the soybean seedling and increase the activity of AsA-POD. Therefore, La alleviated the chlorophyll degradation and the damage of soybean seedling caused by light oxidation.

Key words: Lanthanum (La), Lanthanum (La), Ultraviolet-B radiation, Soybean seedling, Effect of light oxidation