Claim · model-written summary
Lowering oxygen from 21 to 3% increased control-disc photosynthesis from 59.1 to 94.7 micromoles per gram fresh weight per hour, a 60% increase.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Treatment
- O(2) level was lowered from 21 to 3%e0
- Outcome
- Photosynthesise0
- Direction
- increasede0
- Value
- a 60% increasee0
- Comparator
- control discse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthesis in control discs increased from 59.1 to 94.7 micromoles of CO(2) per gram fresh weight per hour (a 60% increase) when the O(2) level was lowered from 21 to 3%”
t0“Tobacco”
Title
David J. Oliver PLANT PHYSIOLOGY 1978. doi:10.1104/pp.62.6.938
Other claims from this paper (10)
- Intervention effect Glyoxylate inhibited glycolate synthesis in tobacco leaf discs.
- Intervention effect Glyoxylate inhibited photorespiration in tobacco leaf discs.
- Intervention effect Glyoxylate increased net photosynthetic carbon dioxide fixation.
- Intervention effect With 15 millimolar glyoxylate, lowering oxygen increased photosynthesis from 82.0 to 99.7 micromoles per gram fresh weight per hour, a 22% increase.
- Intervention effect Glyoxylate decreased oxygen sensitivity of photosynthesis.
- Observation Tobacco leaf discs metabolized added glyoxylate at about 1.35 micromoles per gram fresh weight per hour.
- Association Glyoxylate metabolism rate did not depend on atmospheric oxygen concentration.
- Observation The glyoxylate metabolism rate was about 10% of the glyoxylate-induced increase in carbon dioxide fixation on a molar carbon basis.
- Intervention effect Ten millimolar glyoxylate had no effect on the isolated carboxylase/oxygenase activity.
- Mechanism The authors conclude that cellular metabolites can regulate the Warburg effect.