THE FIXATION OF CARBON DIOXIDE BY GROWING AND NONGROWING YEAST
- 1 May 1951
- journal article
- research article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 61 (5) , 527-534
- https://doi.org/10.1128/jb.61.5.527-534.1951
Abstract
Yeasts were cultured in closed systems containing isotopic carbon dioxide (C14O2) in order to determine the percentage of total C (in that fraction that had been acid-washed and ether-extracted) originating from the CO2 in the air. Growing yeast cells rapidly fixed CO2 ob-taining as much as 5% of their total C from the air. After an exposure of 10 days under the same CO2 tension, nongrowing cells contained only 1% C derived from the atmosphere. At low concns. of CO2, the uptake of this C by growing yeast is proportional to the CO2 concn. When the CO2 concn. exceeds 5%, the % of the total C represented by fixed C becomes essentially constant.Keywords
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