The role of sulphur in detoxication of cadmium in young sugar beet plants |
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| Authors: | M Popović S KevreŠan J Kandrač J Nikolić N Petrović R Kastori |
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| Institution: | (1) Institute of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Yugoslavia;(2) Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 1, 21000 Novi Sad, Yugoslavia |
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| Abstract: | In young sugar beet plants cadmium suppressed the activity of nitrate reductase, glutamine synthetase and glutamate dehydrogenase,
whereas sulphur exhibited a protective role towards activity of these enzymes, except of glutamine synthetase. Protein synthesis
was suppressed in the absence of S in nutrient medium; the lowest level was at 10-3 M Cd2+. Chloroplast pigment contents were increased by S while Cd2+, even in the lowest concentration, (10−5 M) showed a repressive effect. The highest concentrations of Cd2+ (10−3 M) caused a decrease in dry mass, whereas S induced its increase. Nitrate content was increased in the presence of
Cd2+ and decreased by increased concentration of S.
Acknowledgement: The authors acknowledge financial support of the Ministry for Science and Technology of Serbia.
The paper was presented at 9th Congress of the Federation of European Societies of Plant Physiology, Brno, Czech Republic,
3–8 July 1994. |
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| Keywords: | tBeta vulgaris L carotenoids chlorophyll glutamate dehydrogenase glutamine synthetase nitrate reductase protein biosynthesis |
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