Response of Matter Production Process through Photosynthetic Source-Sink Mechanism to Elevation of COィイD22ィエD2. Concentration in Air

光合源-库机制的物质生产过程对空气中 COD22 浓度升高的响应。

• 批准号: 09440260
• 负责人: SAWADA Shinichi
• 金额: $ 8.51万
• 依托单位: HIROSAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09440260/
• 关键词: Carboxylation efficiency; COィイD2ィエD2 transfer conductance; Feedback inhibition; Ribulose-1,5-bisphosphate carboxylase; Sink-limited condition; Sin le-rooted so bean leaves; 光合成sourse-sink機構; ダイズのソース・シンクモデル植物; カルボキシレーション効率; 光合成のsource-sink機構; ダイズ

CィイD23ィエD2 model plants of single-rooted soybean leaves were used to investigate the acclimation mechanism of photosynthesis to COィイD22ィエD2 enrichment. The results indicate that, in the rooted leaves kept for the long term under the sink-limited condition by COィイD22ィエD2 enrichment, the suppression of photosynthesis was caused by the lowering of the carboxylation efficiency due to hindering of the COィイD22ィエD2, transfer conductance between intercellular space and stroma in chloroplast by the large accumulation of starch rather than physical damage of chloroplast by extreme enlargement of starch grains, limitation of Pi- regeneration capacity and lowering of RuBPcase capacity in chloroplast.

利用C2D23D2单根大豆叶片模型研究了光合作用对COD22D2富集的适应机制，结果表明，长期处于库限制条件下的CO2D22富集，光合作用受到抑制。这是由于阻碍了羧化效率降低而引起的。 CO2D22，叶绿体中细胞间隙和基质之间的转移传导是由于淀粉的大量积累，而不是由于淀粉粒的极度增大、Pi-再生能力的限制和叶绿体中RuBPcase能力的降低而对叶绿体造成物理损伤。

项目成果

Sawada S.et al.: "Photosynthesis with single-rooted Amaranthus leaves.I.Changes in the activities of RuBP-1,5-bisphosphate carboxylase and phosphoenolpyruvate carboxylase and the amounts of intermediates in photosynthetic metabolism in response to changes

Sawada S.et al.：“单根苋菜叶的光合作用。I.RuBP-1,5-二磷酸羧化酶和磷酸烯醇丙酮酸羧化酶的活性变化以及光合代谢中中间体量对变化的响应

Sawada,S.et al.: "Feed-forward effects on the photosynthetic source-sink balance in single-rooted leaves of sweet potato." Plant Production Science. (印刷中).

Sawada, S. 等人：“甘薯单根叶光合源库平衡的前馈效应”（正在出版）。

Sawada S.et al.: "Effects of micro-environmental factors on photosynthetic CO_2 uptake and carbon fixation metabolism in a spring ephemeral,Erythronium japonicum,growing in native and open habitats"Ecol.Res.. 14. 119-130 (1999)

Sawada S.et al.：“微环境因素对原生和开放生境中生长的春季短生植物 Erythrium japonicum 光合 CO_2 吸收和碳固定代谢的影响”Ecol.Res.. 14. 119-130 (1999)

Shinichi Sawada, et al.: "Feed-forward effects on the photosynthetic source-sink balance in single-rooted leaves of sweet potato."Plant Production Sci.. 2. 87-91 (1999)

Shinichi Sawada 等人：“甘薯单根叶光合源库平衡的前馈效应”。《植物生产科学》2. 87-91 (1999)

Kasai,M.et al.: "Concentration of vanadium in soil water and its effect on the growth and metabolism of rye and wheat plants." Communications in Soil Science and Plant Analysis. (印刷中).

Kasai, M. 等人：“土壤水中钒的浓度及其对黑麦和小麦植物生长和代谢的影响。”土壤科学和植物分析通讯（正在出版）。