| Photosynthetic Properties of Photosystem Ⅱ in Arabidopsis thaliana Ipa1 Mutant |
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| 引用本文： | Lian-Wei Peng Jin-Kui Guo Jin-Fang Ma Wei Chi Li-Xin Zhang. Photosynthetic Properties of Photosystem Ⅱ in Arabidopsis thaliana Ipa1 Mutant[J]. 植物学报(英文版), 2006, 48(12): 1424-1430. DOI: 10.1111/j.1744-7909.2006.00385.x |
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| 作者姓名： | Lian-Wei Peng Jin-Kui Guo Jin-Fang Ma Wei Chi Li-Xin Zhang |
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| 作者单位： | [1]Key Laboratory of Arid and Grassland Ecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China [2]Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Photosynthesis Research Center, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （30370121） and a grant from the Institute of Botany, the Chinese Academy of Sciences.The authors thank Professor E-M Aro for the generous gifts of the antibodies. The authors are grateful to Nottingham Stock Center for the Arabidopsis seeds. |
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| 摘 要： | In a previous study, we characterized a high chlorophyll fluorescence Ipal mutant of Arabidopsis thallana, in which approximately 20% photosystem （PS） Ⅱ protein is accumulated. In the present study, analysis of fluorescence decay kinetics and thermoluminescence profiles demonstrated that the electron transfer reaction on either the donor or acceptor side of PSII remained largely unaffected in the Ipa1 mutant. In the mutant, maximal photochemical efficiency （Fv/Fm, where Fm is the maximum fluorescence yield and Fv is variable fluorescence） decreased with increasing light intensity and remained almost unchanged in wildtype plants under different light conditions. The Fv/Fm values also increased when mutant plants were transferred from standard growth light to low light conditions. Analysis of PSll protein accumulation further confirmed that the amount of PSll reaction center protein is correlated with changes in Fv/Fm in Ipal plants. Thus, the assembled PSll in the mutant was functional and also showed increased photosensitivity compared with wild-type plants.
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| 关 键 词： | 光合作用 突变体 植物 研究 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-03-202006-05-15 |
Photosynthetic Properties of Photosystem II in Arabidopsis thaliana Ipa1 Mutant |
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| Lian-Wei Peng,Jin-Kui Guo,Jin-Fang Ma,Wei Chi, Li-Xin Zhang. Photosynthetic Properties of Photosystem II in Arabidopsis thaliana Ipa1 Mutant[J]. Journal of integrative plant biology, 2006, 48(12): 1424-1430. DOI: 10.1111/j.1744-7909.2006.00385.x |
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| Authors: | Lian-Wei Peng Jin-Kui Guo Jin-Fang Ma Wei Chi Li-Xin Zhang |
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| Affiliation: | Key Laboratory of Arid and Grassland Ecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China;;Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Photosynthesis Research Center, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: | In a previous study, we characterized a high chlorophyll fluorescence Ipa1 mutant of Arabidopsis thaliana, in which approximately 20% photosystem (PS) II protein is accumulated. In the present study, analysis of fluorescence decay kinetics and thermoluminescence profiles demonstrated that the electron transfer reaction on either the donor or acceptor side of PSII remained largely unaffected in the Ipa1 mutant. In the mutant, maximal photochemical efficiency (Fv/Fm, where Fm is the maximum fluorescence yield and Fv is variable fluorescence) decreased with increasing light intensity and remained almost unchanged in wild‐type plants under different light conditions. The Fv/Fm values also increased when mutant plants were transferred from standard growth light to low light conditions. Analysis of PSII protein accumulation further confirmed that the amount of PSII reaction center protein is correlated with changes in Fv/Fm in Ipa1 plants. Thus, the assembled PSII in the mutant was functional and also showed increased photosensitivity compared with wild‐type plants. (Managing editor: Ping He) |
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| Keywords: | Arabidopsis thaliana electron transfer Ipa1 photosensitivity photosystem II |
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