Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement
Growth responses and biovolume changes for four facultatively psychrophilic bacterial isolates from Conception Bay, Newfoundland, and the Arctic Ocean were examined at temperatures from - 1.5 to 35°C, with substrate concentrations of 0.15, 1.5, and 1,500 mg of proteose peptone-yeast extract per lite...
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American Society for Microbiology
1992
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Online Access: | http://dx.doi.org/10.1128/aem.58.1.359-364.1992 https://journals.asm.org/doi/pdf/10.1128/aem.58.1.359-364.1992 |
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crasmicro:10.1128/aem.58.1.359-364.1992 2024-04-28T08:10:29+00:00 Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement Wiebe, W. J. Sheldon, W. M. Pomeroy, L. R. 1992 http://dx.doi.org/10.1128/aem.58.1.359-364.1992 https://journals.asm.org/doi/pdf/10.1128/aem.58.1.359-364.1992 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 58, issue 1, page 359-364 ISSN 0099-2240 1098-5336 Ecology Applied Microbiology and Biotechnology Food Science Biotechnology journal-article 1992 crasmicro https://doi.org/10.1128/aem.58.1.359-364.1992 2024-04-02T06:50:51Z Growth responses and biovolume changes for four facultatively psychrophilic bacterial isolates from Conception Bay, Newfoundland, and the Arctic Ocean were examined at temperatures from - 1.5 to 35°C, with substrate concentrations of 0.15, 1.5, and 1,500 mg of proteose peptone-yeast extract per liter. For two cultures, growth in 0.1, 1.0, and 1,000 mg of proline per liter was also examined. At 10 to 15°C and above, growth rates showed no marked effect of substrate concentration, while at - 1.5 and 0°C, there was an increasing requirement for organic nutrients, with generation times in low-nutrient media that were two to three times longer than in high-nutrient media. Biovolume showed a clear dependence on substrate concentration and quality; the largest cells were in the highest-nutrient media. Biovolume was also affected by temperature; the largest cells were found at the lowest temperatures. These data have implications for both food web structure and carbon flow in cold waters and for the effects of global climate change, since the change in growth rate is most dramatic at the lowest temperatures. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Newfoundland ASM Journals (American Society for Microbiology) Applied and Environmental Microbiology 58 1 359 364 |
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 Wiebe, W. J. Sheldon, W. M. Pomeroy, L. R. Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
topic_facet |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology |
description |
Growth responses and biovolume changes for four facultatively psychrophilic bacterial isolates from Conception Bay, Newfoundland, and the Arctic Ocean were examined at temperatures from - 1.5 to 35°C, with substrate concentrations of 0.15, 1.5, and 1,500 mg of proteose peptone-yeast extract per liter. For two cultures, growth in 0.1, 1.0, and 1,000 mg of proline per liter was also examined. At 10 to 15°C and above, growth rates showed no marked effect of substrate concentration, while at - 1.5 and 0°C, there was an increasing requirement for organic nutrients, with generation times in low-nutrient media that were two to three times longer than in high-nutrient media. Biovolume showed a clear dependence on substrate concentration and quality; the largest cells were in the highest-nutrient media. Biovolume was also affected by temperature; the largest cells were found at the lowest temperatures. These data have implications for both food web structure and carbon flow in cold waters and for the effects of global climate change, since the change in growth rate is most dramatic at the lowest temperatures. |
format |
Article in Journal/Newspaper |
author |
Wiebe, W. J. Sheldon, W. M. Pomeroy, L. R. |
author_facet |
Wiebe, W. J. Sheldon, W. M. Pomeroy, L. R. |
author_sort |
Wiebe, W. J. |
title |
Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
title_short |
Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
title_full |
Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
title_fullStr |
Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
title_full_unstemmed |
Bacterial Growth in the Cold: Evidence for an Enhanced Substrate Requirement |
title_sort |
bacterial growth in the cold: evidence for an enhanced substrate requirement |
publisher |
American Society for Microbiology |
publishDate |
1992 |
url |
http://dx.doi.org/10.1128/aem.58.1.359-364.1992 https://journals.asm.org/doi/pdf/10.1128/aem.58.1.359-364.1992 |
genre |
Arctic Arctic Ocean Climate change Newfoundland |
genre_facet |
Arctic Arctic Ocean Climate change Newfoundland |
op_source |
Applied and Environmental Microbiology volume 58, issue 1, page 359-364 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.58.1.359-364.1992 |
container_title |
Applied and Environmental Microbiology |
container_volume |
58 |
container_issue |
1 |
container_start_page |
359 |
op_container_end_page |
364 |
_version_ |
1797578356953186304 |