Untitled - MendelNet 2013 - Mendelova zemědělská a lesnická ...

MENDELNET 2013CONCLUSIONSElevated [CO 2 ] stimulates photosynthesis and, consequently, leads to increased production ofaboveground biomass and grain.This stimulatory effect is more pronounced if nitrogen is no limiting factor and also under the effectof drought. Higher effect under drought stress is probably due to the stomatal response to elevated[CO 2 ] and increased water efficiency.Elevated [CO 2 ] leads to a decrease in grain protein content and to reduction of other qualityparameters such as Zeleny sedimentation test. The negative effect on the quality is higherparticularly when plants were exposed to drought stress and also under nitrogen deficiency.REFERENCESHÖGY, P., WIESER, H., KÖHLER, P., SCHWADORF, K., BREUER, J., FRANZARING, J. ,MUNTIFERING, R., FANGMEIER, A. 2009. Effects of elevated CO2 on grain yield and qualityof wheat: results from a 3-year free-air CO2 enrichment experiment. Plant Biology 11: 60–69.LEAKEY, A.D.B., AINSWORTH, E.A., BERNACCHI, C.J., ROGERS, A., LONG, S.P., ORT,D.R. 2009. Elevated CO2 effects on plant carbon, nitrogen, and water relations: six importantlessons from FACE. Journal of Experimental Botany 60: 2859–2876.LONG, S. P., AINSWORTH, E. A., ROGERS, A., ORT, D. R., 2004. Rising atmospheric carbondioxide: Plants face the future. Annual Review of Plant Biology 55:591-628.NOAA (National and Oceanic Administration) 2012. Recent global CO 2 . Availableonline:http://www.esrl.noaa.gov/gmd/ccgg/trends/global.html, accessed on 11th April, 2012.REICH, P.B., HOBBIE, S.E., LEE, T., ELLSWORTH, D.S., WEST, J.B., TILMAN, D., KNOPS,J.M.H, NAEEM, S., TROST, J. 2006. Nitrogen limitation constrains sustainability of ecosystemresponse to CO 2 . Nature 440: 922–925.SOKOLOV, A. P., STONE, P. H., FOREST, C. E., PRINN, R., SAROFIM, M. C., WEBSTER, M.,PALTSEV, S., SCHLOSSER, C. A., KICKLIGHTER, D., DUTKIEWICZ, S., REILLY, J.,WANG, C., FELZER, B., MELILLO, J. M., JACOBY, H. D., 2009. Probabilistic forecast fortwenty-first-century climate based on uncertainties in emissions (without policy) and climateparameters. (vol 22, pg 5175, 2009). Journal of Climate 23:2230-2231.TRIPATI, A. K., ROBERTS, C. D., EAGLE, R. A., 2009. Coupling of CO 2 and Ice Sheet StabilityOver Major Climate Transitions of the Last 20 Million Years. Science 326:1394-1397.URBAN, O., 2003. Physiological impacts of elevated CO2 concentration ranging from molecularto whole plant responses. Photosynthetica 41:9-20.673 | P age