Microbial uptake of lead.
Science
; 176(4041): 1334-5, 1972 Jun 23.
Article
em En
| MEDLINE
| ID: mdl-5034545
ABSTRACT
Micrococcus luteus and Azotobacter sp. cells grown in broth in contact with a dialysis membrane containing lead bromide were found to immobilize 4.9 and 3.1 x 10(2) milligrams of lead per gram of whole cells, on a dry weight basis, respectively. Culture turbidity and cell count measurements on these and other cell cultures show that lead bromide, lead iodide, and lead bromochloride in concentrations approaching solubility limits have no detectable effect on overall growth rate and cell viability. Analyses of cellular subfractions reveal that fractions of cell wall plus membrane contain 99.3 and 99.1 percent of the lead found associated with Micrococcus luteus and Azotobacter sp., respectively. The remainder is found associated with the cytoplasmic fractions.
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Base de dados:
MEDLINE
Assunto principal:
Azotobacter
/
Chumbo
/
Micrococcus
Idioma:
En
Ano de publicação:
1972
Tipo de documento:
Article