Carbon Dioxide Fixation By Green Plants

The pathway of carbon dioxide fixation in crassulacean plants.

Combined gas chromatography-mass spectrometry of malic acid derivatives has been used to show unequivocally that malic acid, synthesized during active acid accumulation in the dark by Kalanchoë daigremontiana Hammet et Perrier in the presence of (13)CO(2) is produced by a pathway involving a single carboxylation. The significance of the finding that crassulacean malate synthesized in the dark a...

Carbon dioxide fixation by Rhodopseudomonas capsulatus.

Carbon Dioxide Fixation by Detached Cereal Caryopses1

Immature detached cereal caryopses from barley (Hordeum vulgare L. var distichum cv Midas) and wheat (Triticum aestivum L. cv Sicco) were shown to be capable of fixing externally supplied"'CO2 in the light or dark. Green cross cells and the testa contained the majority of the 14Clabeled material. Some "4C-labeled material was also found in the outer, or transparent, layer and in the endosperm/e...

Carbon Dioxide Fixation by Extracts of Streptococcus

sence of exogenously added glutamate and pyridoxal-5'-phosphate and produced radioactive aspartate in the presence of these components. Reduced nicotinamide adenine dinucleotide or reduced nicotinamide adenine dinucleotide phosphate could not be substituted for adenosine triphosphate (ATP); phosphoenolpyruvate even in the presence of nucleoside diphosphates could not replace pyruvate plus ATP; ...

Carbon dioxide fixation by detached cereal caryopses.

Immature detached cereal caryopses from barley (Hordeum vulgare L. var distichum cv Midas) and wheat (Triticum aestivum L. cv Sicco) were shown to be capable of fixing externally supplied (14)CO(2) in the light or dark. Green cross cells and the testa contained the majority of the (14)C-labeled material. Some (14)C-labeled material was also found in the outer, or transparent, layer and in the e...