Claim · model-written summary
At high fertility, late-season leaf respiration per area was unchanged under elevated CO2.
- Treatment
- elevatede0
- Outcome
- respiratione0
- Direction
- no changee0
- Qualifier
- area basise0
- Comparator
- ambient CO 2 plantse0
PopulusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no change (area basis) or reduced (mass basis) respiration late‐season in elevated compared to ambient CO 2 plants.”
e1“Carbon dioxide effects on leaf respiration were most pronounced at high fertility”
e2“hybrid poplar ( Populus × euramericana )”
Title
PETER S. CURTIS; CHRISTOPH S. VOGEL; KURT S. PREGITZER; et al. New Phytologist 1995. doi:10.1111/j.1469-8137.1995.tb04295.x
Other claims from this paper (15)
- Intervention effect Elevated CO2 increased single-leaf net assimilation through most of the season in both fertility treatments.
- Intervention effect At high fertility, elevated CO2 increased maximum individual leaf size.
- Intervention effect At high fertility, elevated CO2 increased total leaf number.
- Intervention effect At high fertility, elevated CO2 increased seasonal leaf area duration.
- Intervention effect At high fertility, elevated CO2 increased total dry weight by 49%.
- Intervention effect At low fertility, leaf area growth was unaffected by CO2 treatment.
- Intervention effect At low fertility, CO2 increased total dry weight by 25%.
- Intervention effect Elevated CO2 reduced photosynthetic capacity after 100 days at low fertility.
- Intervention effect Elevated CO2 reduced photosynthetic capacity after 135 days at high fertility.
- Mechanism The authors attribute photosynthetic downregulation to reduced maximum Rubisco CO2 fixation.
- Intervention effect Maximum electron transport was unaffected or declined under elevated CO2.
- Intervention effect Phosphate regeneration capacity was unaffected or declined under elevated CO2.
- Intervention effect At high fertility, elevated CO2 increased mid-season leaf respiration.
- Intervention effect At high fertility, late-season leaf respiration per mass declined under elevated CO2.
- Association Temporal respiration variation correlated with leaf nitrogen and leaf mass per area.