Effect of temperature on mineralization by heterotrophic bacteria

Journal Article · Sat Mar 01 00:00:00 EST 1980 · Appl. Environ. Microbiol.; (United States)

OSTI ID:7098639

Tison, D L; Pope, D H

When pure cultures of the bacteria Pseudomonas fluorescens (a psychrotroph), Escherichia coli (a mesophile), and SRL 261 (a thermophile) were shifted away from temperatures to which they were adapted, the percentage of substrate mineralized increased (percent mineralized = (substrate respired to CO/sub 2/)/(substrate respired to CO/sub 2/ + substrate incorporated into biomass) x 100). The increase in the percent mineralized was larger for larger temperature shifts. Similar responses were observed when natural heterotrophic bacterial populations from sediments of Lake George, N.Y., and a thermophilic algal-bacterial mat community at the Savannah River Plant, Aiken, S.C., were subjected to temperature shifts. These results suggest that an increase in the percent mineralized may be an indication of thermal stress in bacterial populations.

• Research Organization: Rensselaer Polytechnic Inst., Troy, NY
• DOE Contract Number: AT(07-2)-1
• OSTI ID: 7098639
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 39:3
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CELL CULTURES
METABOLISM
MINERALIZATION
TEMPERATURE EFFECTS
ALGAE
AQUATIC ECOSYSTEMS
BIOLOGICAL STRESS
BIOLOGY
BIOMASS
CARBON DIOXIDE
ENVIRONMENTAL EFFECTS
ESCHERICHIA COLI
PSEUDOMONAS
RESPIRATION
SENSITIVITY
SUBSTRATES
THERMAL EFFLUENTS
THERMOPHILIC CONDITIONS
BACTERIA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ECOSYSTEMS
ENERGY SOURCES
MICROORGANISMS
OXIDES
OXYGEN COMPOUNDS
PLANTS
RENEWABLE ENERGY SOURCES
550700* - Microbiology
550500 - Metabolism
560202 - Thermal Effects- Microorganisms- (1987)