Claim · model-written summary
The trees had a larger fraction of photosynthetic N in light harvesting components than the herbs.
- Taxon
- treese1
- Outcome
- fraction of photosynthetic N in light harvesting componentse1
- Direction
- largere1
- Comparator
- herbse1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Verbatim
e1“The trees had a larger fraction of photosynthetic N in light harvesting components compared to the herbs”
Title
Analysis of differences in photosynthetic nitrogen‐use efficiency between four contrasting species
Thijs L. Pons; Milka H. M. Westbeek Physiologia Plantarum 2004. doi:10.1111/j.1399-3054.2004.00380.x
Other claims from this paper (8)
- Observation Photosynthetic nitrogen-use efficiency decreased in the order Galinsoga ciliata, Origanum vulgare, Populus nigra, Quercus robur.
- Intervention effect Nutrient availability did not have a large effect on PNUE except in Galinsoga.
- Association Leaf mass per unit area was negatively correlated with PNUEmax.
- Mechanism The negative correlation between leaf mass per unit area and PNUEmax is likely partly caused by N present in cell wall proteins.
- Mechanism The larger light-harvesting N fraction contributed substantially to the PNUEmax difference between trees and herbs, but not to PNUE calculated for an overcast day.
- Mechanism High intercellular CO2 concentration in Galinsoga and Populus contributed significantly to their higher PNUEmax, particularly at low nutrient availability.
- Mechanism The large CO2 gradient between intercellular spaces and chloroplasts explained a substantial part of the PNUEmax difference between Quercus and the other species.
- Mechanism Stomatal and internal conductances for CO2 explained most of the PNUEmax difference between Quercus and Populus at high nutrient availability.