The effect of potentially toxic elements and sewage sludge on the activity of regulatory enzyme glutamate kinase

D. Pavlíková, M. Pavlík, L. Staszková, P. Tlustoš, J. Száková and J. Balík
Additional contact information
D. Pavlíková: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
M. Pavlík: Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic
L. Staszková: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
P. Tlustoš: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
J. Száková: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
J. Balík: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic

Plant, Soil and Environment, 2007, vol. 53, issue 5, 201-206

Abstract: The glutamate kinase activity was investigated as a plant stress response to Cd, Zn, As or sewage sludge application to soil in the pot and field experiments with spinach (Spinacia oleracea L.). Allosteric regulation of glutamate kinase activity by free proline creates a possibility for an increase in glutamic acid content due to the synthesis of glutathione and phytochelatines in plant cells. For this reason the high rates of As, Cd and Zn applied into soil strongly decreased the glutamate kinase activity. Allosteric regulation of the glutamate kinase activity did not inhibit the synthesis of proline and hydroxyproline under stress condition caused by organic pollutants after application of sewage sludge. Formed proline was bound to stress proteins and therefore glutamate kinase activity was not inhibited.

Keywords: proline regulation; toxic elements; plant stress metabolism; chronic stress (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations: View citations in EconPapers (9)

Downloads: (external link)
http://pse.agriculturejournals.cz/doi/10.17221/2204-PSE.html (text/html)
http://pse.agriculturejournals.cz/doi/10.17221/2204-PSE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:53:y:2007:i:5:id:2204-pse

DOI: 10.17221/2204-PSE

Access Statistics for this article

Plant, Soil and Environment is currently edited by Kateřina Součková

More articles in Plant, Soil and Environment from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().