Effect of Cu2+ ions on nitrogen assimilation and metabolism enzymes in selected field crops

The effect of Cu2+ ions on nitrogen assimilation and metabolism enzymes (nitrate reductase, glutamine synthetase and glutamate dehydrogenase) in leaves of young plants of wheat and maize has been investigated. Cu2+ concentrations used were 10-8 (control), 10-7 , 10-5 and 10-3 mol dm-3 . Enzymology o...

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Bibliographic Details
Main Author: Malenčic Djordje
Corporate Author: International Symposium on Analytical and Environmental Problems (23.) (2017) (Szeged)
Format: Book part
Published: 2017
Series:Proceedings of the International Symposium on Analytical and Environmental Problems 23
Kulcsszavak:Agrokémia, Növénykémia, Analitikai kémia
Online Access:http://acta.bibl.u-szeged.hu/56197
Description
Summary:The effect of Cu2+ ions on nitrogen assimilation and metabolism enzymes (nitrate reductase, glutamine synthetase and glutamate dehydrogenase) in leaves of young plants of wheat and maize has been investigated. Cu2+ concentrations used were 10-8 (control), 10-7 , 10-5 and 10-3 mol dm-3 . Enzymology of nitrogen assimilation and metabolism was significantly different between examined genotypes: in wheat, NR activity decreased with the increased Cu2+ concentrations while the GS activity increased (except for the 10-3 mol dm-3 Cu2+ concentration). In maize, NR activity was at its minimum while GS activity was not detected. GDH activity varied in both species examined. The obtained results also indicate that the investigated maize hybrid is more Cu-sensitive in the sense of nitrogen assimilation and metabolism, compared to wheat. In wheat, two nitrogen assimilation pathways were established (GS/GOGAT- and GDH-pathway). In maize, only GDH-pathway was present.
Physical Description:239-243
ISBN:978-963-306-563-1