Interaction Between Cadmium Stress and Sulphur Nutrition Level on Macronutrient Status ofSinapis albaL.
This study evaluated the possibility of improving the macronutrient status of Cd-stressed white mustard 'Rota' using intensive S nutrition. Three S-SO4(2, 6, 9 mM S) and four CdCl2doses (0, 0.0002, 0.02, 0.04 mM Cd) in the Hoagland's nutrient solution were conducted for 14 days. High S supply (6 or 9 mM) appears, to some extent, to affect positively the macronutrient status of Cd-stressed mustard. It increased roots and shoots contents of K and S, without significant changes in P content. Simultaneously, Mg content in shoots and roots remained stable, but Mg bioaccumulation was elevated. Shoot Ca content at the lowest and medium Cd dose decreased, whilst was unaffected at the highest Cd treatment. Intensive S nutrition of Cd-stressed mustard increased root N content and accumulation at the highest Cd concentration, but the N content dropped in above-ground parts. The bioaccumulation of remained macronutrients in general was substantially elevated together with enhanced Cd accumulation. Thus, the intensive S nutrition can enhance mustard tolerance to Cd stress by improvement macronutrients relations in plants, and S supplementation may be recommended for mustard cultivation on the Cd-contaminated areas.
Department of Plant Physiology, Faculty of Horticulture and Landscape Architecture, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland.
Renata
R
Matraszek
Department of Plant Physiology, Faculty of Horticulture and Landscape Architecture, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland.
Barbara
B
Hawrylak-Nowak
Department of Chemistry, Faculty of Agrobioengineering, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland.
Stanisław
S
Chwil
Department of Botany, Faculty of Horticulture and Landscape Architecture, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland.
Mirosława
M
Chwil
Cadmium; Macronutrient content and bioaccumulation; Sulphur nutrition level; White mustard
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