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Electron paramagnetic resonance (EPR) spectroscopy characterization of wheat grains from plants of different water stress tolerance

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Electron paramagnetic resonance (EPR) spectroscopy characterization of wheat grains from plants of different water stress tolerance

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dc.contributor.author Łabanowska, Maria [SAP11010689] pl
dc.contributor.author Filek, Maria pl
dc.contributor.author Kurdziel, Magdalena [SAP11013001] pl
dc.contributor.author Bednarska, Elżbieta pl
dc.contributor.author Dłubacz, Aleksandra pl
dc.contributor.author Hartikainen, Helina pl
dc.date.accessioned 2015-09-04T09:15:38Z
dc.date.available 2015-09-04T09:15:38Z
dc.date.issued 2012 pl
dc.identifier.issn 0176-1617 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/15343
dc.language eng pl
dc.title Electron paramagnetic resonance (EPR) spectroscopy characterization of wheat grains from plants of different water stress tolerance pl
dc.type JournalArticle pl
dc.description.physical 1234-1242 pl
dc.abstract.en Grains of five genotypes of wheat (four Polish and one Finnish), differing in their tolerance to drought stress were chosen for this investigation. Electron paramagnetic resonance spectroscopy allowed obser- vation of transition metal ions (Mn, Fe, Cu) and different types of stable radicals, including semiquinone centers, present in seed coats, as well as several types of carbohydrate radicals found mainly in the inner parts of grains. The content of paramagnetic metal centers was higher in sensitive genotypes (Radunia, Raweta) than in tolerant ones (Parabola, Nawra), whereas the Finnish genotype (Manu) exhibited inter- mediate amounts. Similarly, the concentrations of both types of radicals, carbohydrates and semiquinone were significantly higher in the grains originating from more sensitive wheat genotypes. The nature of carbohydrate radicals and their concentrations were confronted with the kinds and amounts of sugars found by the biochemical analyses and microscopy observations. It is suggested that some long lived radicals (semiquinone and starch radicals) occurring in grains could be indicators of stress resistance of wheat plants. pl
dc.subject.en carbohydrate radicals pl
dc.subject.en EPR pl
dc.subject.en semiquinone radicals pl
dc.subject.en stress tolerance pl
dc.subject.en wheat grains pl
dc.description.volume 169 pl
dc.description.number 13 pl
dc.description.points 35 pl
dc.identifier.doi 10.1016/j.jplph.2012.04.020 pl
dc.identifier.eissn 1618-1328 pl
dc.title.journal Journal of Plant Physiology pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2012 A]: 35


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