Comparative study of uptake and cellular distribution of Hg/sup 203/-labeled phenyl-mercuric acetate and mercuric acetate by pea roots

Journal Article · Sat Jan 01 04:00:00 EST 1966 · Plant Physiol.; (United States)

OSTI ID:6587393

Rao, A V; Fallin, E; Fang, S C

Uptake and cellular distribution of mercury/sup 203/ from dilute mercuric acetate of phenylmercuric acetate solutions by excised pea roots (Pisum sativum) have been investigated. The time course of uptake showed that the amount of mercury uptake was increased with the time of incubation, and was similar for inorganic mercury or phenylmercuric acetate. The trend of mercury/sup 203/ incorporation into cellular components from mercuric acetate and phenylmercuric acetate differed greatly as the time of incubation increased. The concentrations of mercuric acetate and phenylmercuric acetate solutions or the temperature of incubation also affected the mercury/sup 203/ uptake as well as its cellular distribution. Longer time of exposure or higher concentration resulted in a greater mercury incorporation into mitochondrial fraction from phenylmercuric acetate than from inorganic mercury. This difference in intracellular distribution may be responsible for the degree of toxicity between inorganic mercury and phenylmercuric acetate in biological systems.

• Research Organization: Oregon State Univ., Corvallis
• OSTI ID: 6587393
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 41; ISSN PLPHA
• Country of Publication: United States
• Language: English

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
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL LOCALIZATION
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
EVEN-ODD NUCLEI
HEAVY NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LEGUMINOSAE
MERCURY 203
MERCURY COMPOUNDS
MERCURY ISOTOPES
NUCLEI
ORGANIC COMPOUNDS
ORGANIC MERCURY COMPOUNDS
PISUM
PLANTS
RADIOISOTOPES
ROOT ABSORPTION
ROOTS
SENSITIVITY
TISSUE DISTRIBUTION
TOXICITY
TRACER TECHNIQUES
UPTAKE