Claim · model-written summary
Stomatal density increased by 18%.
- Taxon
- Aleppo pine (Pinus halepensis)
Pinus halepensise1 - Treatment
- eCO2e2
- Outcome
- stomatal densitye0
- Direction
- increasede0
- Value
- +18%e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal density increased (+18%)”
e1“Aleppo pine (Pinus halepensis)”
e2“eCO2-triggered reductions in canopy conductance (gc)”
Title
Marielle Gattmann; Scott A M McAdam; Benjamin Birami; et al. PLANT PHYSIOLOGY 2022. doi:10.1093/plphys/kiac482
Other claims from this paper (13)
- Intervention effect Elevated CO2 reduced leaf-level canopy conductance by 55%.
- Mechanism The conductance reduction was not caused by ABA.
- Intervention effect Reduced conductance was not reversible under low CO2.
- Intervention effect Stomatal development and size were unchanged under elevated CO2.
- Intervention effect Vein-to-epidermis distance increased by 65%.
- Intervention effect Branch xylem conduits were 8% smaller.
- Intervention effect Conduit lumen fraction was 11% lower.
- Intervention effect Specific conductivity was 19% lower.
- Intervention effect Leaf-specific conductivity was 34% lower.
- Intervention effect Elevated CO2 adaptations did not alter stomatal sensitivity to soil or atmospheric drought.
- Intervention effect Xylem safety thresholds were similar under elevated CO2.
- Mechanism Leaf biomass increases largely annulled water savings.
- Observation Authors do not expect elevated CO2 to alleviate drought stress.