Regulation and Acclimation of C_2-photosynthesis in High CO_2

高CO_2条件下C_2-光合作用的调控与驯化

• 批准号: 04660064
• 负责人: MAKINO Amane
• 金额: $ 1.28万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04660064/
• 关键词: Gas Exchange; Photosynthesis; High CO_2; Nitrogen Nutrition; Acclimation; C_3 Plants; Rubisco

The photosynthetic gas-exchange rates and their underlying biochemical properties were examined in young, fully expanded leaves of rice, wheat and pea. The plants were grown hydroponically under different CO_2 concentrations (35 Pa and 70 Pa). Enhanced CO_2 did not affect Rubisco content, carbonic anhydrase activity and electron transport capacity for a given leaf nitrogen content. However, it affected the light-saturated photosynthetic CO_2 response curve. The relative ratio of the initial slope to the CO_2-saturated photosynthesis decreased in the plants grown under high CO_2. This was mainly caused by an decrease in the initial slope for a given Rubisco content with rising CO_2 concentrations. This suggests that long-term CO_2 enhancement leads to an decrease in the CO_2 transfer conductance inside a leaf.

研究了水稻、小麦和豌豆幼叶的光合气体交换速率及其生化特性。在不同的CO_2浓度（35 Pa和70 Pa）下进行水培试验。在叶片氮含量一定的情况下，CO_2浓度升高对Rubisco含量、碳酸酐酶活性和电子传递能力没有影响。但影响了光饱和光合CO_2响应曲线。在高CO_2浓度下，初始坡度与CO_2饱和光合速率的相对比值降低。这主要是由于在一定的Rubisco含量下，初始斜率随CO_2浓度的增加而减小。这表明长期CO_2浓度增加导致叶片内CO_2传递电导率降低。

项目成果

Makino: "Responses of Ribulose-1,5-bisphosphate Carboxilase, cytochrome f, and Sucrose Synthesis Enzymes in Rice Leaves to Leaf Nitrogen and Their Relationships to Photosynthesis" Plant Physiology. 105. (in press) (1994)

Makino：“水稻叶片中核酮糖 1,5-二磷酸羧化酶、细胞色素 f 和蔗糖合成酶对叶氮的响应及其与光合作用的关系”植物生理学。

Makino: "Biochemistry of C_3-photosynthesis in High CO_2" Journal of Plant Research. 107(印刷中). (1994)

Makino：“高 CO_2 中 C_3-光合作用的生物化学”植物研究杂志 107（出版中）。

Makino et al.: "Distinctive Responses of Ribulose-1.5-bisphosphate Canboxylase and Carbonic Andydrase in Wheat Leaves to Nitrogen Nutvition and Their Possible Relationships to CO_2-Transfer Resistance" Plant Physiology. 100. 1737-1743 (1992)

Makino 等人：“小麦叶中 Ribulose-1.5-二磷酸 Canboxylase 和 Carbonic Andydrase 对氮营养的独特反应及其与 CO_2 转移抗性的可能关系”植物生理学。

Makino: "Biochemistry of C_3-photosynthesis in High CO_2" Journal of Plant Research. (in press). (1994)

Makino：“高 CO_2 中 C_3-光合作用的生物化学”植物研究杂志。

Makino et al.: "Responses of Ribulose-1.5-bisphosphate Canboxylase,Cytochromef,and Sucrose Synthesis Enzymes in Rice Leaves to Leaf Nitrogen and Thair Relationskips to Photosynthesis" Plant Physiology. 105(印刷中). (1994)

Makino 等人：“水稻叶片中 Ribulose-1.5-二磷酸 Canboxylase、Cytochromef 和蔗糖合成酶对叶片氮的响应以及 Thair 与光合作用的关系”，《植物生理学》105（出版中）。