Název:
Short-term application of elevated temperature and drought influences the isotopic composition of winter wheat grains
Autoři:
Pernicová, Natálie ; Urban, Otmar ; Čáslavský, Josef ; Klem, Karel ; Trnka, Miroslav Typ dokumentu: Příspěvky z konference Konference/Akce: MendelNet 2021, Brno (CZ), 20211110
Rok:
2021
Jazyk:
eng
Abstrakt: The study aimed to determine the differences in carbon (δ13C) and nitrogen (δ15N) stable isotope ratios in grains of three winter wheat varieties grown under optimal and stress conditions. We found that the wheat variety has a significant effect on both δ13C and δ15N isotope ratios. Short-term (nine days) exposure to drought and high temperature during the heading or stem extension development phase significantly enhanced δ13C values, but only high temperature affected δ15N values. Enhanced δ15N values support the assumption that global warming causes a higher representation of the 15N isotope in plants. Moreover, significant interactive effects of temperature and water availability on the values of both isotopes were found implying that C and N metabolisms have been altered under the investigated stress conditions. We conclude that δ13C and δ15N isotope ratios of cereal grains are sensitive indicators of stress conditions, even short-term ones
Klíčová slova:
13C; 15N; drought; grain; high temperature; wheat Číslo projektu: EF16_019/0000797 Poskytovatel projektu: GA MŠk Zdrojový dokument: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4