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The effect of cadmium and zinc on metabolism of spinach
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SYSNO ASEP 0338331 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title The effect of cadmium and zinc on metabolism of spinach Title Vliv kadmia a zinku na metabolismus špenátu Author(s) Pavlíková, D. (CZ)
Pavlík, Milan (UEB-Q) RID, ORCID
Staszková, L. (CZ)
Balík, J. (CZ)
Száková, J. (CZ)
Tlustoš, P. (CZ)Source Title Chemia i inzynieria ekologiczna - ISSN 1231-7098
Roč. 16, 5-6 (2009), s. 639-645Number of pages 7 s. Language eng - English Country PL - Poland Keywords toxic metals ; regulation of proline Subject RIV EF - Botanics CEZ AV0Z50380511 - UEB-Q (2005-2011) Annotation Changes in metabolism of spinach (Spinacia oleraceae L., cv. Matador) plants exposed to stress caused by two heavy metals, cadmium and zinc, were studied. The distribution of these elements in biomass (root, leaf blade, petiole), chlorophyll content and activity of glutamate kinase [E.C.2.7.2.11], the enzyme catalyzing the first step of proline biosynthesis, were investigated in pot experiments. Results of the experiment revealed the toxic effects of cadmium and zinc at both tested levels (2.5, 25 mg Cd and 50, 500 mg Zn . kg-1 soil) for spinach. Under these conditions, decrease of glutamate kinase activity in spinach plants grown on contaminated treatments compared to untreated control was found. Allosteric regulation of proline content was investigated due to the synthesis of glutathione and subsequently phytochelatines in plant cells. The higher doses of both metals negatively affected yield of spinach dry biomass. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2010
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