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2018-05-17Zeitschriftenartikel DOI: 10.3390/molecules23051197
Selected Plant Metabolites Involved in Oxidation-Reduction Processes during Bud Dormancy and Ontogenetic Development in Sweet Cherry Buds (Prunus avium L.)
Baldermann, Susanne
Homann, Thomas
Neugart, Susanne cc
Chmielewski, Frank-M.
Götz, Klaus-Peter
Gödeke, Kristin
Huschek, Gerd
Morlock, Getrud E.
Rawel, Harshadrai M.
Lebenswissenschaftliche Fakultät
Many biochemical processes are involved in regulating the consecutive transition of different phases of dormancy in sweet cherry buds. An evaluation based on a metabolic approach has, as yet, only been partly addressed. The aim of this work, therefore, was to determine which plant metabolites could serve as biomarkers for the different transitions in sweet cherry buds. The focus here was on those metabolites involved in oxidation-reduction processes during bud dormancy, as determined by targeted and untargeted mass spectrometry-based methods. The metabolites addressed included phenolic compounds, ascorbate/dehydroascorbate, reducing sugars, carotenoids and chlorophylls. The results demonstrate that the content of phenolic compounds decrease until the end of endodormancy. After a long period of constancy until the end of ecodormancy, a final phase of further decrease followed up to the phenophase open cluster. The main phenolic compounds were caffeoylquinic acids, coumaroylquinic acids and catechins, as well as quercetin and kaempferol derivatives. The data also support the protective role of ascorbate and glutathione in the para- and endodormancy phases. Consistent trends in the content of reducing sugars can be elucidated for the different phenophases of dormancy, too. The untargeted approach with principle component analysis (PCA) clearly differentiates the different timings of dormancy giving further valuable information.
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DOI
10.3390/molecules23051197
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https://doi.org/10.3390/molecules23051197
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<a href="https://doi.org/10.3390/molecules23051197">https://doi.org/10.3390/molecules23051197</a>