Claim · model-written summary
At extremely high CO2 the net photosynthetic rate of Stipa purpurea decreased.
- Taxon
- Stipa purpureaStipa purpureat0
- Treatment
- extremely high CO2e2
- Outcome
- net photosynthetic rate (Pn)e2
- Direction
- decreasede2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
t0“Stipa purpurea under irrigation in northern Tibet”
e2“Rising CO2 gradually increased net photosynthetic rate (Pn) until it decreased at extremely high CO2”
Title
Ya Guo Chinese Journal of Plant Ecology 2011
Other claims from this paper (19)
- Association CO2, temperature and soil moisture significantly affected photosynthesis parameters of Stipa purpurea, with interactions among the three factors.
- Association Rising CO2 increased the net photosynthetic rate of Stipa purpurea.
- Association Higher temperature decreased the net photosynthetic rate (Pn) of Stipa purpurea.
- Association Sufficient water supply partially alleviated the negative effect of higher temperature on Stipa purpurea.
- Association Sufficient water supply increased the net photosynthetic rate of Stipa purpurea.
- Association Rising CO2 increased the intercellular CO2 concentration (Ci) of Stipa purpurea.
- Association Rising CO2 decreased the transpiration rate (Tr) of Stipa purpurea.
- Association Rising CO2 increased the water use efficiency (WUE) of Stipa purpurea.
- Association Rising CO2 decreased the stomatal conductance (Gs) of Stipa purpurea.
- Association Higher temperature made the stomatal conductance of Stipa purpurea decrease faster.
- Association Stomatal conductance of Stipa purpurea was maximized at 20 °C.
- Association Sufficient water supply increased the stomatal conductance of Stipa purpurea further.
- Association Intercellular CO2 concentration of Stipa purpurea increased with increased temperature, more pronounced with sufficient water.
- Association Transpiration rate of Stipa purpurea was positively correlated with temperature and soil water.
- Association Vapor pressure deficit of Stipa purpurea was directly proportional to temperature.
- Association Vapor pressure deficit of Stipa purpurea decreased with sufficient water.
- Association Increased temperature and increased water supply made water use efficiency of Stipa purpurea decline.
- Association Increased soil water had compensatory effects on the relationship between high temperature and photosynthetic parameters of Stipa purpurea.
- Association The combined actions of humidity and temperature impacted the photosynthesis parameters of Stipa purpurea.