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Internal Grant Competition DGC





Dynamic changes in plant photoprotective mechanisms under elevated CO2 concentration and higher temperature
Project Id18-23702S
Main solverdoc. RNDr. Vladimír Špunda, CSc.
Periodr1/2018 - 6/2021
ProviderStandardní projekt GA ČR
Statesolved
AnotationGlobal climate models predict an increase in atmospheric CO2 concentration up to 700 ppm and global temperatures by as much as 3.0 °C by 2100. These factors have direct effects on physiological processes and plant growth. In addition, more frequent droughts and heat waves that lead to oxidative stress in plants are expected. The project aims to assess changes in the protective mechanisms of plants acclimated to factorial treatments of CO2 × temperature. Protective mechanisms and their dynamics will be studied at molecular (changes in profile of selected secondary metabolites), leaf (changes in anatomy, stoichiometry, allocation of phenolic with focus on flavonoids and their antioxidant activity) and whole-plant levels (changes in morphology). Experiments will be performed on barley genotypes grown in laboratory and field conditions. The project originality is based on the investigation of robustness (at the level of photosynthetic and growth responses) of acclimated plants to subsequent abiotic (extreme temperatures, drought, irradiance) stressors.