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Accumulation Of Cadmium In Near-Isogenic Lines Of Durum Wheat (Triticum Turgidum L. Var Durum): The Role Of Transpiration, C. J. Quinn, A. Mohammad, Sheila M. Macfie

Biology Publications

Concentrations of cadmium in the grain of durum wheat (Triticum turgidum L. var durum) are often above the internationally acceptable limit of 0.2 mg kg⁻¹. Cultivars that vary in concentrations of cadmium in the grain have been identified but the physiology behind differential accumulation has not been determined. Three pairs of near-isogenic lines (isolines) of durum wheat that vary in aboveground cadmium accumulation (8982-TL ‘high’ and ‘low’, W9260-BC ‘high’ and ‘low’, and W9261-BG ‘high’ and ‘low’) were used to test the hypothesis that the greater amounts of cadmium in shoots of the ‘high’ isolines are correlated with …

Compost Application Affects Metal Uptake In Plants Grown In Urban Garden Soils And Potential Human Health Risk, Hollydawn Murray, Trevor A. Pinchin, Sheila M. Macfie

Biology Publications

Purpose This study explores the effect of varying organic matter content on the potential human health risk of consuming vegetables grown in urban garden soils.

Materials and methods Metal accumulation among edible tissues of green bean (Phaseolus vulgaris L.), lettuce (Lactuca sativa L.) and carrot (Daucus carota L.) was determined for plants grown in five urban garden soils amended with 0, 9, or 25% (v/v) compost. Potential risk to human health was assessed by calculating a bioconcentration factor and a hazard quotient.

Results and discussion Overall, the consumption of lettuce and green bean pods grown in some …