Open AccessHeterotrophic Carbon Dioxide Fixation Products of Euglena
Author(s) -
Jennifer G. Peak,
Meyrick J. Peak,
Irwin P. Ting
Publication year - 1980
Publication title -
plant physiology
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.65.3.566
Subject(s) - carbon dioxide , euglena , carbon fixation , heterotroph , euglena gracilis , chemistry , botany , environmental science , biology , ecology , biochemistry , bacteria , paleontology , chloroplast , gene
The metabolic products of heterotrophic (dark) CO(2) fixation by Euglena gracilis Klebs strain Z Pringsheim were separated and identified. They consisted of amino acids, phosphorylated compounds, tricarboxylic acid cycle intermediates, and nucleotides. Exposure of the cells to NH(4) (+) after a period of NH(4) (+) deprivation stimulated heterotrophic CO(2) fixation almost 4-fold, modifying the spectrum of the fixation products. In particular, the NH(4) (+) treatment stimulated fixation of CO(2) into glutamine, glycine, alanine, and serine.
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