Claim · model-written summary
High CO2 increased the root/shoot ratio.
- Taxon
- TOBACCO PLANTS
Nicotiana tabacumt0 - Treatment
- high CO2 concentratione0
- Outcome
- root/shoot ratioe0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high CO2 concentration promoted root growth whereas shoot growth was only slightly increased, which resulted in an increased root/shoot ratio”
t0“TOBACCO PLANTS”
Title
Pia Walch-Liu; Günter Neumann; Christof Engels Journal of Plant Nutrition 2001. doi:10.1081/pln-100103777
Other claims from this paper (10)
- Intervention effect High CO2 promoted root growth under nitrogen deficiency.
- Intervention effect High CO2 slightly increased shoot growth under nitrogen deficiency.
- Intervention effect Elevated CO2 decreased shoot nitrogen concentration at low nitrogen supply.
- Intervention effect Elevated CO2 did not decrease root nitrogen concentration at low nitrogen supply.
- Intervention effect Elevated CO2 favored nitrogen partitioning into roots relative to shoots.
- Intervention effect Rubisco protein decreased under nitrogen deficiency and elevated CO2.
- Association Starch concentration increased alongside the decline in Rubisco protein.
- Observation Sugar concentrations were unaffected.
- Mechanism The authors suggest that internal nitrogen availability restricts root growth under nitrogen limitation.
- Mechanism The authors attribute favored root nitrogen partitioning under elevated CO2 to lower shoot nitrogen demand.