Claim · model-written summary
The degree of de-epoxidation of xanthophyll cycle pigments was not changed or was even lower after transfer to ex vitro conditions.
- Taxon
- Nicotiana tabacum L.
Nicotiana tabacume0 - Treatment
- elevated CO2 concentration (E, 1000 µmol mol−1)e0
- Outcome
- degree of de-epoxidation of xanthophyll cycle pigmentse1
- Direction
- not changed or was even lowere1
- Comparator
- normal CO2 concentration (C, 330 µmol mol−1)e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nicotiana tabacum L. plants grown in vitro were transferred to ex vitro conditions and grown for 28 d in a greenhouse under normal CO2 concentration (C, 330 µmol mol−1) or elevated CO2 concentration (E, 1000 µmol mol−1)”
e1“The degree of de-epoxidation of xanthophyll cycle pigments was not changed or was even lower after transfer to ex vitro conditions”
Title
Effect of elevated CO2 concentration on acclimation of tobacco plantlets to ex vitro conditions
J. Pospisilova; H. Synkova; D. Haisel; et al. Journal of Experimental Botany 1999. doi:10.1093/jxb/50.330.119
Other claims from this paper (12)
- Intervention effect Stomatal conductances of abaxial and adaxial epidermes under optimal conditions were not significantly affected by growth under elevated CO2.
- Intervention effect Stomatal regulation of gas exchange was better under elevated CO2.
- Intervention effect Leaf photosynthetic rate of elevated CO2 plants was similar to control plants when both were measured under normal CO2.
- Intervention effect Leaf photosynthetic rate of elevated CO2 plants was higher than control plants when both were measured under elevated CO2.
- Intervention effect Photosynthetic rate of elevated CO2 plants was much higher than that of control plants when measured at their respective growth CO2 concentration.
- Intervention effect The higher photosynthetic rate resulted in a higher growth rate of elevated CO2 plants.
- Intervention effect Chlorophyll a and b contents and activities of the whole electron transport chain and of photosystem II were not markedly affected by growth under elevated CO2.
- Intervention effect Maximum efficiency of PSII (Fv/Fm) was even slightly increased under elevated CO2.
- Observation No down-regulation of photosynthesis occurred in transplanted plants grown for 4 weeks under elevated CO2.
- Intervention effect Contents of beta-carotene and xanthophyll cycle pigments were lower in elevated CO2 plants.
- Observation No photoinhibition occurred in the elevated CO2 plants.
- Recommendation The authors conclude that CO2 enrichment can improve acclimation of in vitro-grown plantlets to ex vitro conditions.