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Acidithiobacillus ferrivorans SS3 presents little RNA transcript response related to cold stress during growth at 8 A degrees C suggesting it is a eurypsychrophile
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0003-0021-2452
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)
Curtin Univ, Australia.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0002-9622-3318
2016 (English)In: Extremophiles, ISSN 1431-0651, E-ISSN 1433-4909, Vol. 20, no 6, 903-913 p.Article in journal (Refereed) Published
Abstract [en]

Acidithiobacillus ferrivorans is an acidophilic bacterium that represents a substantial proportion of the microbial community in a low temperature mining waste stream. Due to its ability to grow at temperatures below 15 A degrees C, it has previously been classified as 'psychrotolerant'. Low temperature-adapted microorganisms have strategies to grow at cold temperatures such as the production of cold acclimation proteins, DEAD/DEAH box helicases, and compatible solutes plus increasing their cellular membrane fluidity. However, little is known about At. ferrivorans adaptation strategies employed during culture at its temperature extremes. In this study, we report the transcriptomic response of At. ferrivorans SS3 to culture at 8 A degrees C compared to 20 A degrees C. Analysis revealed 373 differentially expressed genes of which, the majority were of unknown function. Only few changes in transcript counts of genes previously described to be cold adaptation genes were detected. Instead, cells cultured at cold (8 A degrees C) altered the expression of a wide range of genes ascribed to functions in transcription, translation, and energy production. It is, therefore, suggested that a temperature of 8 A degrees C imposed little cold stress on At. ferrivorans, underlining its adaptation to growth in the cold as well as suggesting it should be classified as a 'eurypsychrophile'.

Place, publisher, year, edition, pages
2016. Vol. 20, no 6, 903-913 p.
Keyword [en]
Extremophile, Psychrophile, Cold acclimation, Compatible solutes, Metabolism, Electron transport
National Category
Microbiology
Research subject
Ecology, Microbiology
Identifiers
URN: urn:nbn:se:lnu:diva-59011DOI: 10.1007/s00792-016-0882-2ISI: 000387270500009PubMedID: 27783177OAI: oai:DiVA.org:lnu-59011DiVA: diva2:1056741
Available from: 2016-12-15 Created: 2016-12-14 Last updated: 2017-01-24Bibliographically approved

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Christel, StephanFridlund, JimmyDopson, Mark
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CiteExportLink to record
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