Regulation of Dry Matter Production Process in Response to Changes in Photosynthetic Source-Sink Balance by Plant Density

植物密度响应光合源库平衡变化的干物质生产过程调节

• 批准号: 05640703
• 负责人: SAWADA Shin-ichi
• 金额: $ 1.41万
• 依托单位: Hirosaki 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: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640703/
• 关键词: Photosynthesis; Source; Sink Mechanism; Plant Density; Source Content; RuBP Content; RuBPcarboxylase Activity; 光合成速度; sucrose含量; 光合成; source-sink機構; 物質生産過程; 群落状態; RuBPCase活性

Soybean (Glycine max Merr.cv.Tsurunoko) plants were grown in the experimental field with high (20 plants/m^2) and law (1.6 plants/m^2) densitites. With progressing of their growth, high density plants were placed under deep mutual shading condition, although low density plants were continuously placed under independently indivitual conditions.(1) Upper leaves on high density plants kept high photosynthetic activities from morning to after noon. Low density plants showed high photosynthetic activities before noon but largely lowered the activities after noon.(2) Sucrose content in leaves of the low density plants was higher than in the high density plants.(3) In the low density plants, the activity of RuBPcase lowered according to lowering of photosynthetic activity. This lowered activity was perfectly recovered with addition of CO_2 and Mg^<2+> into activation medium.(4) The RuBP content in leaves of the lower density plants was significantly higher than in those of the high density plants.It is concluded that the results obtained from the low density plants are consisitent with the those which were observed in the source-sink model plants made from soybean leaves when the source/sink balance was altered (Sawada et al., 1986,1987,1989,1990,1992,1995a, b).

在高密度（20株/m2）和低密度（1.6株/m2）的试验田中种植大豆（Glycine max Merr.cv.Tsurunoko）植株。随着生长的进行，高密度植株置于深度互荫条件下，而低密度植株则连续置于各自独立的条件下。(1)高密度植株的上部叶片从上午到中午后一直保持较高的光合活性。低密度植株中午前光合活性高，中午后光合活性大幅度降低。(2)低密度植株叶片中蔗糖含量高于高密度植株。(3)在低密度植株中，RuBPcase活性随光合活性的降低而降低。在活化培养基中加入CO_2和Mg^<2+>后，这种降低的活性完全恢复. (4)低密度植株叶片中RuBP含量显著高于高密度植株，这表明低密度植株获得的结果与改变源/库平衡时由大豆叶片制成的源-库模式植株中观察到的结果一致（Sawada et al.，1986、1987、1989、1990、1992、1995 a、B）。

项目成果

Sawada,S.et al.: "Regulation of the activity of ribulose-1,5-bisphosphate carboxylase in response of changes in photosynthetic source-sink balance in intact plants." Plant cell Physiol.:. 36. 551-556 (1995)

Sawada,S.et al.：“调节核酮糖-1,5-二磷酸羧化酶的活性以响应完整植物中光合源库平衡的变化。”

澤田信一: "研究スポット: 光合成のソース・シンク制御機構とリン酸。" 化学と生物、. 33. 198-206 (1996)

泽田真一：“研究热点：光合作用和磷酸的源库控制机制”，化学与生物学，33。198-206（1996）

Shinichi Sawada: "Ecotypic differentiation of dry matter production processes in relationship and reproductive potential in Plantago asiatica populations along climatic gradients." Functional Ecology. 8. 400-409 (1994)

Shinichi Sawada：“车前草种群干物质生产过程的生态型分化与气候梯度的关系和繁殖潜力。”

Minobu Kasai: "Evidence for decrease in vanadate-sensitive Mg^<2+>-ATPase activity of higher plant membrane preparations in sucrose solution." Plant Cell Physiol.(In press).

Minobu Kasai：“蔗糖溶液中高等植物膜制剂对钒酸盐敏感的 Mg^2-ATP 酶活性降低的证据。”

Shinichi Sawada: "Regulation of the activity of ribulose-1,5-bisphosphate carboxylase in response to changes in the photosynthetic source-sink balance in intact soybean plants." Plant Cell Physiol.36. 551-556 (1995)

Shinichi Sawada：“调节核酮糖-1,5-二磷酸羧化酶的活性以响应完整大豆植物中光合源库平衡的变化。”