HEAVY-METAL PARTICLE RESISTANCE IN THIOBACILLUS-INTERMEDIUS 13-1 ISOLATED FROM CORRODED CONCRETE

Citation
N. Yoshida et al., HEAVY-METAL PARTICLE RESISTANCE IN THIOBACILLUS-INTERMEDIUS 13-1 ISOLATED FROM CORRODED CONCRETE, Journal of fermentation and bioengineering, 85(6), 1998, pp. 630-633
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Food Science & Tenology","Biothechnology & Applied Migrobiology
ISSN journal
0922-338X
Volume
85
Issue
6
Year of publication
1998
Pages
630 - 633
Database
ISI
SICI code
0922-338X(1998)85:6<630:HPRIT1>2.0.ZU;2-F
Abstract
The effect of exposure to heavy metal particles on the growth and surv ival of bacterial cells was investigated. Thiobacillus intermedius 13- 1, Escherichia coli JM109, and Agrobacterium radiobacter IFO12665b1 we re cultured on LB solid medium or in 5 mi of liquid medium containing 0.03 or 0.1g respectively of the heavy metals, aluminum, cadmium, iron , lead, molybdenum, nickel, and zinc. Cadmium, nickel and zinc strongl y inhibited cell growth in the three strains. In contrast, the bacteri al cells were not inhibited by aluminum, iron, or lead in the solid or liquid medium. When these bacteria were exposed to heavy metals by vi gorous shaking for 10 min, lead and molybdenum, but not nickel and zin c, were markedly toxic to the bacterial cells. Different reaction were thus observed under low-level, long-term and high-level, short-term e xposure conditions. T. intermedius showed more resistance to zinc and nickel, and was more sensitive to molybdenum exposure, than E. coli an d A. radiobacter.