Original title: Short-term application of elevated temperature and drought influences the isotopic composition of winter wheat grains
Authors: Pernicová, Natálie ; Urban, Otmar ; Čáslavský, Josef ; Klem, Karel ; Trnka, Miroslav
Document type: Papers
Conference/Event: MendelNet 2021, Brno (CZ), 20211110
Year: 2021
Language: eng
Abstract: 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
Keywords: 13C; 15N; drought; grain; high temperature; wheat
Project no.: EF16_019/0000797
Funding provider: GA MŠk
Host item entry: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4

Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://mnet.mendelu.cz/mendelnet2021/mnet_2021_full.pdf
Original record: https://hdl.handle.net/11104/0341471

Permalink: http://www.nusl.cz/ntk/nusl-521746


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