Interactions of plant zinc and plant species on the bioavailability of plant cadmium to Japanese quail fed lettuce and spinach

Journal Article · Fri Jan 31 23:00:00 EST 1992 · Environmental Research; (United States)

DOI:https://doi.org/10.1016/S0013-9351(05)80020-9· OSTI ID:7206341

McKenna, I M; Keach, Jr, R M; Williams, F M ^[1]; Chaney, R L ^[2]; Tao, Shyy-Hwa ^[3]

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1. Pennsylvania State Univ., University Park (United States)
2. Pennsylvania State Univ., University Park (United States) Dept. of Agriculture, Beltsville, MD (United States)
3. Food and Drug Administration, Washington, DC (United States)

Many cadmium-contaminated environments contain high levels of zinc. The effects of plant Zn and plant species on plant Cd bioavailability were tested in Japanese quail fed lettuce and spinach. Four groups of birds received 10% of their diets as lettuce or spinach leaves intrinsically labeled with {sup 109}Cd and containing low or high intrinsic Zn. Two other groups were fed control diets containing {sup 109}Cd as CdSO{sub 4} and low or high Zn as ZnCO{sub 3}. Cadmium concentrations in diets ranged from 0.857 to 1.05 {mu}g/g dry wt. Zinc concentrations in low-Zn diets ranged from 21.2 to 22.8, and in high-Zn diets from 56.0 to 63.3 {mu}g/g dry wt. Increased lettuce and spinach Zn decreased plant Cd retention in kidney, liver, and jejunum-ileum of Japanese quail. Spinach Cd was less absorbed than lettuce Cd at both Zn levels. Inorganic Zn produced a lesser decrease in Cd retention in kidney, liver, and jejunum-ileum than did plant Zn. The authors conclude that (1) crops that transport Zn and Cd readily into edible tissues show lower Cd bioavailability when grown in Zn-Cd contaminated environments than in Cd-only polluted sites, (2) plant species differ in Cd bioavailability for identical concentrations of Zn and Cd in edible tissues, and (3) toxicological studies with animals exposed to Cd salts and Zn supplements do not assess Cd bioavailability of Zn-Cd contaminated crops.

• OSTI ID: 7206341
• Journal Information: Environmental Research; (United States), Journal Name: Environmental Research; (United States) Vol. 57:1; ISSN ENVRA; ISSN 0013-9351
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BETA DECAY RADIOISOTOPES
BIOLOGICAL AVAILABILITY
BIOLOGICAL EFFECTS
BIRDS
CADMIUM
CADMIUM 109
CADMIUM ISOTOPES
CONTAMINATION
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
FOOD
FOOD CHAINS
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LETTUCE
MAGNOLIOPHYTA
MAGNOLIOPSIDA
METABOLISM
METALS
NUCLEI
PLANTS
RADIOISOTOPES
SPINACH
TISSUE DISTRIBUTION
TRACER TECHNIQUES
VEGETABLES
VERTEBRATES
YEARS LIVING RADIOISOTOPES
ZINC