离体菠菜叶绿体的光暗固定二氧化碳。
Carbon dioxide fixation in the light and in the dark by isolated spinach chloroplasts.
机构信息
Department of Biology, Brandeis University, Waltham, Massachusetts 02154.
出版信息
Plant Physiol. 1974 Feb;53(2):140-3. doi: 10.1104/pp.53.2.140.
Abstract
Factors affecting CO(2) fixation in the spinach (Spinacia oleracea) chloroplast were investigated. Free magnesium ions are shown to be highly inhibitory for photosynthetic CO(2) fixation in isolated intact spinach chloroplasts. The pH optimum for CO(2) fixation is about 8.5 but is dependent upon the reaction medium. Conditions are defined under which chloroplasts illuminated in the absence of CO(2) accumulate ribulose 1,5-diphosphate, and fix CO(2) in a subsequent dark period when high magnesium ion concentrations are provided. The regulation of photosynthetic CO(2) assimilation by these factors is discussed.
摘要
研究了影响菠菜（Spinacia oleracea）叶绿体中 CO2 固定的因素。实验表明，游离镁离子对分离完整的菠菜叶绿体的光合 CO2 固定有高度抑制作用。CO2 固定的最适 pH 值约为 8.5，但取决于反应介质。在一定条件下，当提供高浓度镁离子时，叶绿体在无 CO2 的情况下被照光，会积累核酮糖 1,5-二磷酸，并在随后的黑暗期固定 CO2。讨论了这些因素对光合 CO2 同化的调节。
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本文引用的文献
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Inhibition of ribulose 1,5-diphosphate carboxylase by 6-phosphogluconate.6-磷酸葡萄糖酸对核酮糖 1,5-二磷酸羧化酶的抑制作用。
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Level of photosynthetic intermediates in isolated spinach chloroplasts.离体菠菜叶绿体中光合中间产物的水平
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Enhanced Dark CO(2) Fixation by Preilluminated Chlorella pyrenoidosa and Anacystis nidulans.增强型暗 CO2 固定：受预光照的蛋白核小球藻和鱼腥藻的影响。
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The reductive pentose phosphate cycle. I. Phosphoribulokinase and ribulose diphosphate carboxylase.还原性戊糖磷酸循环。I. 磷酸核酮糖激酶和二磷酸核酮糖羧化酶。
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