Publication | Closed Access
Evidence that Plants from High Altitudes Retain their Greater Photosyntheti Efficiency Under Elevated CO 2
91
Citations
0
References
1994
Year
EngineeringPhotorespirationBotanyCarbon AllocationTerrestrial EcosystemHerbaceous Plant SpeciesPlant EcologyHigh AltitudesGreater Photosyntheti EfficiencyPhotosynthesisHealth SciencesCarbon SequestrationBiogeochemistryPhotosystemsHigh Altitudes RetainCo 2Carbon SinkPlant MetabolismElevated Co 2Plant Physiology
Herbaceous plant species native to low and high altitudes in the Alps evolved under CO 2 partial pressures (P a ) that differ as much as pre-industrial P a differs from present day P a at low altitude (e.g. 21% for a 2000-m difference in altitude). In a previous study we showed that the efficiency of CO 2 uptake (ECU) in typical high-altitude species is generally greater than in low-altitude species. Here we investigate whether this difference prevails under longer-term exposure to altered P a . Alpine and lowland species (mainly Ranunculus glacialis/R. acris and Geum reptans/G. rivale) were grown under various CO 2 regimes in full daylight growth chambers at their respective natural growth temperature and photoperiod (...)