Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium
Carbon-starved cultures of strain Ant-300, a psychrophilic marine vibrio isolated from the Antarctic Convergence, were compared with their nonstarved counterparts for resistance to heat. Specifically, starved and unstarved cells were exposed to 17°C, which is 4°C above the maximum growth temperature...
Published in: | Applied and Environmental Microbiology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Society for Microbiology
1993
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1128/aem.59.8.2653-2656.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.8.2653-2656.1993 |
id |
crasmicro:10.1128/aem.59.8.2653-2656.1993 |
---|---|
record_format |
openpolar |
spelling |
crasmicro:10.1128/aem.59.8.2653-2656.1993 2024-03-03T08:37:18+00:00 Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium Preyer, Janet M. Oliver, James D. 1993 http://dx.doi.org/10.1128/aem.59.8.2653-2656.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.8.2653-2656.1993 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 59, issue 8, page 2653-2656 ISSN 0099-2240 1098-5336 Ecology Applied Microbiology and Biotechnology Food Science Biotechnology journal-article 1993 crasmicro https://doi.org/10.1128/aem.59.8.2653-2656.1993 2024-02-03T23:13:23Z Carbon-starved cultures of strain Ant-300, a psychrophilic marine vibrio isolated from the Antarctic Convergence, were compared with their nonstarved counterparts for resistance to heat. Specifically, starved and unstarved cells were exposed to 17°C, which is 4°C above the maximum growth temperature, and compared with cells maintained at the optimum temperature (5 to 7°C). Total cell counts, direct viable-cell counts, and plate counts were monitored. At a temperature of 17°C, viability (as indicated by plate counts) was lost within 40 h, with direct viable-cell counts indicating less than 5% viability at this time. However, when cells were carbon starved for 1 week prior to heat challenge, significant plateability was maintained for more than 6 days; direct viable-cell counts of starved cells maintained at 17°C indicated the presence of viable cells for at least 12 days. Because starvation is the normal physiological state of copiotrophic, heterotrophic bacteria in oligotrophic marine waters, these data suggest that starvation conditions may be a significant factor in providing heat tolerance to psychrophiles. Article in Journal/Newspaper Antarc* Antarctic ASM Journals (American Society for Microbiology) Antarctic The Antarctic Applied and Environmental Microbiology 59 8 2653 2656 |
institution |
Open Polar |
collection |
ASM Journals (American Society for Microbiology) |
op_collection_id |
crasmicro |
language |
English |
topic |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology |
spellingShingle |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology Preyer, Janet M. Oliver, James D. Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
topic_facet |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology |
description |
Carbon-starved cultures of strain Ant-300, a psychrophilic marine vibrio isolated from the Antarctic Convergence, were compared with their nonstarved counterparts for resistance to heat. Specifically, starved and unstarved cells were exposed to 17°C, which is 4°C above the maximum growth temperature, and compared with cells maintained at the optimum temperature (5 to 7°C). Total cell counts, direct viable-cell counts, and plate counts were monitored. At a temperature of 17°C, viability (as indicated by plate counts) was lost within 40 h, with direct viable-cell counts indicating less than 5% viability at this time. However, when cells were carbon starved for 1 week prior to heat challenge, significant plateability was maintained for more than 6 days; direct viable-cell counts of starved cells maintained at 17°C indicated the presence of viable cells for at least 12 days. Because starvation is the normal physiological state of copiotrophic, heterotrophic bacteria in oligotrophic marine waters, these data suggest that starvation conditions may be a significant factor in providing heat tolerance to psychrophiles. |
format |
Article in Journal/Newspaper |
author |
Preyer, Janet M. Oliver, James D. |
author_facet |
Preyer, Janet M. Oliver, James D. |
author_sort |
Preyer, Janet M. |
title |
Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
title_short |
Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
title_full |
Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
title_fullStr |
Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
title_full_unstemmed |
Starvation-Induced Thermal Tolerance as a Survival Mechanism in a Psychrophilic Marine Bacterium |
title_sort |
starvation-induced thermal tolerance as a survival mechanism in a psychrophilic marine bacterium |
publisher |
American Society for Microbiology |
publishDate |
1993 |
url |
http://dx.doi.org/10.1128/aem.59.8.2653-2656.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.8.2653-2656.1993 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Applied and Environmental Microbiology volume 59, issue 8, page 2653-2656 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.59.8.2653-2656.1993 |
container_title |
Applied and Environmental Microbiology |
container_volume |
59 |
container_issue |
8 |
container_start_page |
2653 |
op_container_end_page |
2656 |
_version_ |
1792498037647474688 |