Claim · model-written summary
Nonphotochemical quenching occurred below CO2 uptake saturation without zeaxanthin.
- Taxon
- Hedera helix
Hedera helixe1 - Outcome
- nonphotochemical quenching occurred in the absence of zeaxanthine0
Not reportedDirection
Verbatim
e0“below light-saturation of CO(2) uptake nonphotochemical quenching occurred in the absence of zeaxanthin and was not accompanied by a decrease in the yield of instantaneous fluorescence.”
e1“Intact attached sun leaves of Helianthus annuus and shade leaves of Monstera deliciosa and Hedera helix were used to obtain light response curves”
Title
Barbara Demmig-Adams; Klaus Winter; Almuth Krüger; et al. PLANT PHYSIOLOGY 1989. doi:10.1104/pp.90.3.881
Other claims from this paper (9)
- Observation The three species differed widely in light-saturated CO2 uptake capacity.
- Observation The species reached CO2 uptake light saturation at different photon flux densities.
- Observation Below CO2 uptake saturation, instantaneous fluorescence yield did not decrease during nonphotochemical quenching.
- Observation Nonphotochemical quenching increased to 0.35–0.5.
- Observation Nonphotochemical quenching increased again near CO2 uptake saturation.
- Observation Leaf zeaxanthin content rose near CO2 uptake saturation.
- Observation Instantaneous fluorescence yield began decreasing near CO2 uptake saturation.
- Association Increasing zeaxanthin paralleled increasing radiationless energy dissipation.
- Association The authors suggest zeaxanthin may relate to high-energy-state quenching.
Zea mays
Triticum aestivum
Beta vulgaris subsp. vulgaris.jpg?width=60){kind=small}
Hordeum vulgare
Oryza sativa