Regulation of thylakoid assembly in response to environment

类囊体组装响应环境的调节

• 批准号: 04044176
• 负责人: FUJITA Yoshihko
• 金额: $ 3.58万
• 依托单位: OKAZAKI National Research Institutes National Institute for Basic Biology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04044176/
• 关键词: Chlamydomonas; Chlorophyll a synthesis; Dunaliella; Light acclimation; Photosynthesis; Photosystem I; Protein synthesis; 環境適応; 系I・系II比; クロロフィル; 光環境適応; 光化学系工; 蛋白合成

The work addresses the adjustment of the photosystem ratio in the green alga Chlamydomonas reinhardtii. It is shown that green algae, much like cyanophytes and higher plants, adjust and optimize the ratio of the two photosystems in response to the quality of irradiancxe during growth. Such adjustments are compensation reactions and help C.reinhardtii to retain a quantum efficiency of photosynthesis near the theoretical maximum. The detwection of the operation of a molecular feedback mechanism for the PSI/PSII ratio adjustment in green algae strengthens the notion of the highly conserved nature of this mechanism among probably all oxygen evolving photosynthetic organisms. The work delineates chromatic effects on chlorophyll accumulation in the chloroplasts of C.reinhardtiifrom those pertaining to the regulation of the PSI/PSII ratio. It is shown that different photoreceptors are involved in the regulation of the two phenomena. Findings in this work are expected to serve as the basis of future biochemical and mutagenesis experiments aimed to identify important enzymatic steps in the signal transduction pathway and, thus, it will contribute to the elucidation of the molecular mechanism for the PSI/PSII ratio adjustment in oxygenic photosynthesis.

这项工作致力于绿藻莱茵衣藻光系统比率的调整。结果表明，绿藻与蓝藻和高等植物非常相似，会根据生长过程中的辐照度质量来调整和优化两个光系统的比例。这种调整是补偿反应，有助于莱茵哈特氏菌将光合作用的量子效率保持在理论最大值附近。对绿藻中 PSI/PSII 比例调节的分子反馈机制操作的检测强化了这种机制在可能所有产氧光合生物中高度保守的概念。这项工作描绘了与 PSI/PSII 比例调节相关的颜色对莱茵哈特氏菌叶绿体中叶绿素积累的影响。结果表明，不同的光感受器参与了这两种现象的调节。这项工作的结果预计将作为未来生化和诱变实验的基础，旨在确定信号转导途径中重要的酶促步骤，从而有助于阐明 PSI/PSII 比例调节的分子机制。产氧光合作用。

项目成果

Gu, T.-Q., Iwama, Y., Murakami, A., Adhikary, S.P.and Fujita, Y.: "Changes in the cytochrome c oxidase activity in response to light regime for photosynthesis" Plant Cell Physiology. 35. 1135-1140 (1994)

Gu, T.-Q.、Iwama, Y.、Murakami, A.、Adhikary, S.P. 和 Fujita, Y.：“细胞色素 c 氧化酶活性响应光合作用光照状况的变化”植物细胞生理学。

Murakami, A., Nemson J.A., Melis, A.and Fujita, Y.: "Time course of variation of photosystem stoichiometry upon shift of light regime observed with Chlamydomonas reinhardtii" Plant Cell Physiology. (submitted.).

Murakami, A.、Nemson J.A.、Melis, A. 和 Fujita, Y.：“用莱茵衣藻观察到的光状态变化时光系统化学计量变化的时间过程”植物细胞生理学。

藤田善彦、村上明男、相澤克則: "Accumulation of protochllide in cells of Synechocystis 6714 with a low PSI/PSII stoichiometry" Plant Cell Physiology. 36(in press). (1995)

Yoshihiko Fujita、Akio Murakami、Katsunori Aizawa：“低 PSI/PSII 化学计量的集胞藻 6714 细胞中原叶酸的积累”《植物细胞生理学》36（出版中）。

Melis A., Murakami A., Nemson J.A., Aizawa K., Ohki K.and Fujita Y.: "Chromatic regulation of photosystem stoichiometry in Chlamydomonas reinhardtii alters thylakoid membrane structure-function and improves the quantum efficiency of photosynthesis" Plant

Melis A.、Murakami A.、Nemson J.A.、Aizawa K.、Ohki K. 和 Fujita Y.：“莱茵衣藻光系统化学计量的色彩调节改变类囊体膜结构功能并提高光合作用的量子效率”植物

阿部信一郎、村上明男、大城香、有賀裕勝、藤田善彦: "Changes in stoichiometry among PSI,PSII and Cytbf complexes in response to chromatic light" Plant Cell Physiology. 35. 901-906 (1994)

Shinichiro Abe、Akio Murakami、Kaori Oshiro、Hirokatsu Ariga、Yoshihiko Fujita：“PSI、PSII 和 Cytbf 复合物响应色光的化学计量变化”植物细胞生理学 35. 901-906 (1994)。