Cadmium distribution and chemical fate in soybean plants
Journal Article
·
· Plant Physiol.; (United States)
The distribution and chemical behavior of Cd/sup 2+/ in tissues and its chemical form in xylem water of soybeam plants (cv. Williams) were investigated. Following root absorption, Cd is strongly retained by roots, with only 2% of the accumulated Cd being transported to leaves; as much as 8% was transported to seeds during seed filling. In vivo xylem exudates contained two anionic Cd complexes in addition to inorganic forms of Cd. Once accumulated in root and leaf tissues, Cd rapidly equilibrated between the insoluble, soluble, and organelle fractions. Of the solubles, which contain 50% of the Cd, >50% was associated with components of >10,000 molecular weight, and <8% was associated with <500 molecular weight components. Cadmium accumulated in soybean seeds was primarily associated with cotyledons. Fractionation of seeds showed the soy proteinate and soy whey to contain 32 and 50% of the accumulated Cd, respectively.
- Research Organization:
- Battelle, Richland, WA
- OSTI ID:
- 5869076
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 68:4; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
BETA DECAY RADIOISOTOPES
BIOLOGICAL LOCALIZATION
CADMIUM
CADMIUM 109
CADMIUM COMPOUNDS
CADMIUM IONS
CADMIUM ISOTOPES
CHARGED PARTICLES
CHEMICAL STATE
DATA
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOOD
INFORMATION
INTERMEDIATE MASS NUCLEI
IONS
ISOTOPES
METABOLISM
METALS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
ROOT ABSORPTION
SOYBEANS
TISSUE DISTRIBUTION
UPTAKE
VEGETABLES
YEARS LIVING RADIOISOTOPES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
BETA DECAY RADIOISOTOPES
BIOLOGICAL LOCALIZATION
CADMIUM
CADMIUM 109
CADMIUM COMPOUNDS
CADMIUM IONS
CADMIUM ISOTOPES
CHARGED PARTICLES
CHEMICAL STATE
DATA
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOOD
INFORMATION
INTERMEDIATE MASS NUCLEI
IONS
ISOTOPES
METABOLISM
METALS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
ROOT ABSORPTION
SOYBEANS
TISSUE DISTRIBUTION
UPTAKE
VEGETABLES
YEARS LIVING RADIOISOTOPES