Accumulation of secondary metabolites in healthy and diseased barley, grown under future climate levels of CO2, ozone and temperature

Phytochemistry
B L MikkelsenM F Lyngkjær

Abstract

Plants produce secondary metabolites promoting adaptation to changes in the environment and challenges by pathogenic microorganisms. A future climate with increased temperature and CO2 and ozone levels will likely alter the chemical composition of plants and thereby plant-pathogen interactions. To investigate this, barley was grown at elevated CO2, temperature and ozone levels as single factors or in combination resembling future climatic conditions. Increased basal resistance to the powdery mildew fungus was observed when barley was grown under elevated CO2, temperature and ozone as single factors. However, this effect was neutralized in the combination treatments. Twenty-five secondary metabolites were putatively identified in healthy and diseased barley leaves, including phenylpropanoids, phenolamides and hydroxynitrile glucosides. Accumulation of the compounds was affected by the climatic growth conditions. Especially elevated temperature, but also ozone, showed a strong impact on accumulation of many compounds, suggesting that these metabolites play a role in adaptation to unfavorable growth conditions. Many compounds were found to increase in powdery mildew diseased leaves, in correlation with a strong and specific influe...Continue Reading

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Citations

Jun 24, 2016·The Plant Journal : for Cell and Molecular Biology·Eva KnochMichael Foged Lyngkjaer
Nov 3, 2016·Frontiers in Plant Science·Msizi I MhlongoIan A Dubery
Jun 1, 2018·Oxidative Medicine and Cellular Longevity·Yawen ZengTao Yang
Aug 16, 2019·Journal of Food Science and Technology·Dániel KorenGabriella Kun-Farkas
Dec 21, 2016·Environmental Science and Pollution Research International·Lorenzo CotrozziElena Paoletti
Dec 15, 2020·Journal of Experimental Botany·Marwa RoumaniRomain Larbat
Jul 1, 2018·Comprehensive Reviews in Food Science and Food Safety·Julia WannenmacherThomas Becker
Nov 9, 2021·Frontiers in Plant Science·René LemckeMichael F Lyngkjær

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