Main Title |
Adaptation of Aquatic Microbial Communities to Hg(2+) Stress. |
Author |
Barkay, T. ;
|
CORP Author |
Environmental Research Lab., Gulf Breeze, FL. |
Year Published |
1987 |
Report Number |
EPA/600/J-87/333; |
Stock Number |
PB88-199401 |
Additional Subjects |
Aquatic microbiology ;
Mercury(Metal) ;
Water pollution ;
Bacteria ;
Detoxification ;
Fresh water biology ;
Mercury inorganic compounds ;
Reprints ;
Biological stress ;
Biological adaptation ;
Operon
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB88-199401 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
10p |
Abstract |
The mechanism of adaptation to Hg(2+) in four aquatic habitats was studied by correlating microbially mediated Hg(2+) volatilization with the adaptive state of the exposed communities. Structural and functional parameters indicated that adaptation of all four communities was stimulated by exposure to Hg(2+). In saline water communities, adaptation was associated with rapid volatilization after an initial lag period. The mechanism, however, did not promote adaptation in a freshwater environment, where Hg(2+) volatilized slowly, regardless of the adaptive state of the microbial community. Distribution of the mer operon among representative colonies of the communities was not related to adaptation to Hg(2+). Thus, although volatilization is a mechanism which enables some microbial communities to sustain their functions in Hg(2+) stressed environments, it is not coded for by the gene system that mediates the mechanism in pure cultures. |
Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v53 n12 p2725-2732 Dec 87. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Adaptation of Aquatic Microbial Communities to Hg(2+) Stress. |
PUB Date Free Form |
Dec 87 |
Category Codes |
57H; 57K; 47D |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/03 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
821124028 |
Origin |
NTIS |
Type |
CAT |