植物学报 ›› 1994, Vol. 11 ›› Issue (04): 8-11.

• 专论与综述 • 上一篇    下一篇

光逆境对叶绿体叶绿素蛋白质复合物的影响

许春辉 赵福洪 王可玢 杨丹慧 戴云玲   

  1. (中国科学院植物研究所,北京 100044)
  • 出版日期:1994-12-15 发布日期:1994-12-15

Effects of Light Stress on Chlorophyll Protein Complexes from Chloroplasts

Xu Chun-hui, Zhao Fu-hong, Wang he-bin, Yang Dan-hui and Dai Yun-ling   

  1. (Institute of Botany, Academia Sinica, Beijing 100044)
  • Online:1994-12-15 Published:1994-12-15

摘要: 研究了强光照射对菠菜叶绿体的叶绿素蛋白质复合物及一些光合特性的影响。实验结果表明,随着强光照射时间的延长,首先,属光系统Ⅱ核心的叶绿素蛋白质复合物的CPa带明显减少了,进而属LHCII的寡聚体和二聚体的带有了不同程度的降低,最后,包括光系统I在内的叶绿素蛋白质复合物带大部分被分解了。结果还表明,当光逆境还未使叶绿素蛋白质复合物发生明显变化时,代表光系统Ⅱ活性的Fv/Fo值及DCIP光还原活性就已显著地降低了。

Abstract: The effects of strong light radiation on chlorophyll protein complexes and some photosynthetic characteristics of spinach's chloroplasts were studied. The experimental results showed that, with the time of radiation, the quantity of CPa band that belongs to PSII core chlorophyll protein complex decreased obviously first, and then the quantities of the bands that belong seperately to oligomer and dimer of LHCII decreased in different levels, and finally, almost the, most proportion of chlorophyll protein complexest bands including that of PSI were decomposed. It also showed that, when the chlorophyll protein complexes had been changed not evident enough by light stress, the Fv/Fo ratio and DCIP photoreduction activity which represent PSII, activities had been decreased obviously.

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