Does CO2regulate the intracellular chloroplast positioning?

CO2 是否调节细胞内叶绿体的定位？

• 批准号: 23657035
• 负责人: TAKAGI Shingo
• 金额: $ 2.58万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23657035/
• 关键词: 細胞間隙二酸化炭素濃度; シロイヌナズナ; 二酸化炭素; 背腹性; 葉肉細胞; 葉緑体

：Chloroplasts absorb the photosynthetic substrate CO2from the intercellular air spaces. Since chloroplasts in mesophyll cells are adjacent to the cell wall along the intercellular air spaces but not the neighboring cells, it has been hypothesized that chloroplastsare located at the cell wall containing higher CO2, although without any experimental verification. By embedding mesophyll protoplasts in a gel, we obtained the results strongly supporting the hypothesis. Further, by regulating the CO2concentration in the intercellular air spaces of each leaf, we proposed that the final destination of chloroplasts is determined through cross talk between the light intensity and the local CO2concentration in the cell wall.

：叶绿体从细胞间隙吸收光合底物CO2。由于叶肉细胞中的叶绿体沿着细胞间空气空间与细胞壁相邻，而不是邻近的细胞，因此推测叶绿体位于含有较高CO2的细胞壁处，尽管没有任何实验验证。通过将叶肉原生质体嵌入凝胶中，我们得到的结果有力地支持了这一假设。此外，通过调节每片叶子细胞间空气空间中的二氧化碳浓度，我们提出叶绿体的最终目的地是通过光强度和细胞壁中局部二氧化碳浓度之间的串扰来确定的。

项目成果

Analysis of LINCs involved in the maintenance of nuclear morphology in Arabidopsis thaliana

拟南芥中参与核形态维持的LINCs分析

• 发表时间: 2012
• 作者: Y. Sakamoto;S. Takagi
• 通讯作者: S. Takagi

Roles of phototropins and myosins in the light-induced redistribution of mitochondria and chloroplasts in leaf palisade cells of Arabidopsis thaliana.International Symposium

向光素和肌球蛋白在光诱导拟南芥叶栅细胞线粒体和叶绿体重新分布中的作用。国际研讨会

• 发表时间: 2011
• 作者: Nguyen V.T.;Islam M.S.;Takagi S
• 通讯作者: Takagi S

LITTLE NUCLEI 1 and 4 Regulate Nuclear Morphology in Arabidopsis thaliana

• DOI: 10.1093/pcp/pct031
• 发表时间: 2013-04-01
• 期刊: PLANT AND CELL PHYSIOLOGY
• 影响因子: 4.9
• 作者: Sakamoto, Yuki;Takagi, Shingo
• 通讯作者: Takagi, Shingo

Light-dependent nuclear positioning serves as a UV-protection system in plants

光依赖核定位作为植物的紫外线防护系统

• 发表时间: 2012
• 作者: Kosei Iwabuchi;Jun Hidema;Kentaro Tamura;Shingo Takagi;Ikuko Hara-Nishimura
• 通讯作者: Ikuko Hara-Nishimura

シロイヌナズナにおける細胞核形態を維持するLINCの解析

拟南芥维持细胞核形态的LINC分析

• 发表时间: 2012
• 作者: 坂本勇貴;高木慎吾
• 通讯作者: 高木慎吾