Claim · model-written summary
Calculated CO2 concentration at the point of photosynthesis decreased from the compensation point to a nearly constant value at high light.
- Taxon
- speciese1
- Outcome
- [CO 2 ] ge0
- Direction
- decreasede0
- Qualifier
- nearly constant value at high tight intensitiese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Verbatim
e0“The calculated values of [CO 2 ] g decreased from [CO 2 ] g at the compensation point to a nearly constant value at high tight intensities”
e1“range from 32 to 144 μ/l (volume) depending on the species”
Title
A Model of the Photosynthesizing Leaf
K. W. Brown Physiologia Plantarum 1969. doi:10.1111/j.1399-3054.1969.tb07416.x
Other claims from this paper (11)
- Method / resource The model fits the available data well.
- Observation Calculated CO2 concentration at the point of photosynthesis at high light ranges from 32 to 144 μl/l depending on species.
- Association Plants with higher photosynthetic rates had greater calculated CO2 concentration at the point of photosynthesis.
- Association Calculated respiration rates of wheat leaves were twice as high as rates measured in the dark.
- Association Light respiration rate may be twice as great as dark respiration rate in wheat leaves at the same temperature.
- Observation Calculated values of K show variability within and between species.
- Association The maximum N was independent of K in plants.
- Association The relationship between K and maximum quantum efficiency was demonstrated in several species at constant CO2 levels.
- Association Σr was inversely related to the maximum rate of photosynthesis across the species investigated.
- Association Mesophyll resistance calculated for cotton was inversely related to CO2 concentration in air.
- Mechanism CO2 transfer in cotton cells may involve a concentration-dependent chemical reaction in addition to or rather than physical diffusion.