| 水分胁迫对小麦叶绿体光化学活性的影响 |
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| 引用本文： | 周国顺,李建东,刘自华,王邦锡,黄久常.水分胁迫对小麦叶绿体光化学活性的影响[J].北京农学院学报,2003,18(3):188-190. |
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| 作者姓名： | 周国顺 李建东 刘自华 王邦锡 黄久常 |
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| 作者单位： | 1. 唐山市农业科学研究所,唐山,063001
2. 兰州大学植物生理研究室,兰州,730000 |
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| 基金项目： | 河北省唐山市科技局博硕基金;; |
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| 摘 要： | 小麦幼苗经-0.2 MPa PEG溶液根际胁迫处理24h后,类囊体膜叶绿素发射荧光强度F685/F735的比值上升;叶绿体PSI相对电子传递活性明显下降;同时PSI叶绿素蛋白复合体发生了显著降解。因此,推测PSI活性的降低可能与其叶绿素蛋白复合体的降解有关。水分胁迫也导致叶绿体Ca~(2+)-ATPase和Mg~(2+)-ATPase活性明显上升。
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| 关 键 词： | 小麦 水分胁迫 叶绿素发射荧光 光合系统 腺三磷酶 |
| 文章编号： | 1002-3186(2003)03-0188-03 |
| 修稿时间： | 2003年1月8日 |
Effect of Water Stress on Photochemical Activity of Chloroplast from Wheat |
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| ZHOU Guo-shun et al.Effect of Water Stress on Photochemical Activity of Chloroplast from Wheat[J].Journal of Beijing Agricultural College,2003,18(3):188-190. |
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| Authors: | ZHOU Guo-shun |
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| Abstract: | Wheat seedling was osmotic stressed in-0. 2 MPa PEG solution for 24 hours. It was observed that the ratio of chlorophyll emission fluorescence F685/F735 of thylakoid membrane rised; the relative electron transport activity of PS I in chloroplast decreased significantly; and the chlorophyll-protein complex of PS I was degraded remarkably as well. It indicated that there might be a relationship between decreasing of PS I activity and degradation of PS I chlorophyll-protein complex. At the same time, the activities of Ca2+-ATPase and Mg2+-ATPase in chloroplast increased obviously under water stress. |
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| Keywords: | wheat water stress chlorophyll emission fluorescence photosynthetic system ATPase |
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