Acclimation of photosynthesis to temperature regimes and its ecological significance

光合作用对温度的适应及其生态意义

• 批准号: 05640726
• 负责人: TERASHIMA Ichiro
• 金额: $ 1.41万
• 依托单位: University of Tsukuba (1994)The University of Tokyo (1993)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640726/
• 关键词: Photosynthesis; Alpine plants; Low temperature; Photoinhibition; Photosystem I; Photorespiration; Low atmospheric pressure; キュウリ; 低温障害; 光・酸素障害; 強光阻害

1. Chilling damage to the photosynthetic apparatus in chilling-sensitive plants.In contrast to the commonly held view that the most susceptible photosynthetic components to stress factors is D1 in photosystem II,we found that PS I is more sensitive to chilling in the light in Cucumis sativus leaves. The acceptor side of PS I is firstly damaged, and P700 itself would be damaged subsequently. (Collaboration with Dr.Kintake Sonoike, University of Tokyo and Dr.Shigeru Itoh, National Institute for Basic Biology).2. Limiting factor of photosynthesis in alpine plants. With elevation, the atmospheric pressure declines. Thus, carbon dioxide partial pressure also decreases. The low CO_2 partial pressure has been claimed to suppress photosynthesis greatly. However, due to lowered oxygen partial pressue, photosynthetic carbon dioxide fixation does not markedly decrease with the lowered atmospheric pressure.

1.冷胁迫对冷敏感植物光合机构的损害与通常认为光系统II中对胁迫因子最敏感的光合组分是D1相反，我们发现黄瓜叶片中PS I对光照下的冷胁迫更敏感。PS I的受体侧首先被破坏，随后P700本身将被破坏。（与东京大学Kinintake Sonoike博士和国立基础生物学研究所Shigeru Itoh博士合作）。高山植物光合作用的限制因子。随着海拔的升高，大气压力下降。因此，二氧化碳分压也降低。低CO_2分压对光合作用有很大的抑制作用。然而，由于降低的氧分压，光合作用的二氧化碳固定并不显着减少与降低大气压力。

项目成果

寺島一郎: "The site of photoinhibition in leaves of Cucumis sativus L.at low temperatures is photosystem I,not photosystem II." Planta. 193(印刷中). (1994)

Ichiro Terashima：“低温下黄瓜叶子中的光抑制位点是光系统 I，而不是 Planta 193（正在出版）。”

園池公毅: "Destruction of photosystem I iron-sulfur centers in leaves of Cucumis sativus L.by weak illumination at chilling temperatures." FEBS Letter. (印刷中). (1995)

Kimitake Sonoike：“在寒冷温度下弱光照对光系统 I 铁硫中心的破坏”（FEBS Letter）（1995 年）。

K.Sonoike et al.: "Destruction of photosystem I ironsulfur centers in leaves of Cucumis sativus L.by weak illumination at chilling temperatures." FEBS Letter. (in press). (1995)

K.Sonoike 等人：“在寒冷温度下通过弱光照破坏黄瓜叶子中的光系统 I 铁硫中心。”

寺島一郎: "The site of photoinhibition in leaves of Cucumis sativus L.at low temperatures is photosystem I,not photosystem II" Planta. 193. 300-306 (1994)

Ichiro Terashima：“低温下黄瓜叶子中的光抑制位点是光系统 I，而不是光系统 II”Planta 193. 300-306 (1994)。

園池公毅: "Mechanism of photosystem-I photoinhibition in leaves of Cucumis sativus L." planta. 194. 287-293 (1994)

Kimitake Sonoike：“Cucumis sativus L. 叶子中光系统 I 光抑制的机制。”194. 287-293 (1994)