The effect of copper toxicity on the contents of nitrogen compounds in Silene vulgaris (Moench) Garcke

Autor: W. M. Ten Bookum-Van Der Maarel, Henk Schat, M. B. Weber
Rok vydání: 1991
Předmět:
Zdroj: Plant and Soil. 133:101-109
ISSN: 1573-5036
0032-079X
DOI: 10.1007/bf00011904
Popis: The effect of copper on the uptake of nitrogen and the tissue contents of inorganic nitrogen, amino acids and proteins were studied in cooper-sensitive Silene vulgaris (Moench) Garcke, grown at different nitrogen sources (NH4+ or NO3-). All the toxic copper levels tested, i.e. 4, 8, 16 μM Cu2+, strongly inhibited the uptake of nitrogen, especially of NO3-, and decreased the content of NO3-, amino acids and proteins. Especially at 4 and 8 μM Cu2+, NH4+ accumulated in the plants, suggesting that the conversion of NH4- into amino acids was inhibited.
Databáze: OpenAIRE