Change search
ReferencesLink to record
Permanent link

Direct link
Metagenomic analysis reveals adaptations to a cold-adapted lifestyle in a low-temperature acid mine drainage stream
Umeå University, Faculty of Science and Technology, Department of Molecular Biology (Faculty of Science and Technology).
Show others and affiliations
2015 (English)In: FEMS Microbiology Ecology, ISSN 0168-6496, E-ISSN 1574-6941, Vol. 91, no 4, fiv011Article in journal (Refereed) Published
Abstract [en]

An acid mine drainage (pH 2.5-2.7) stream biofilm situated 250 m below ground in the low-temperature (6-10 degrees C) Kristineberg mine, northern Sweden, contained a microbial community equipped for growth at low temperature and acidic pH. Metagenomic sequencing of the biofilm and planktonic fractions identified the most abundant microorganism to be similar to the psychrotolerant acidophile, Acidithiobacillus ferrivorans. In addition, metagenome contigs were most similar to other Acidithiobacillus species, an Acidobacteria-like species, and a Gallionellaceae-like species. Analyses of the metagenomes indicated functional characteristics previously characterized as related to growth at low temperature including cold-shock proteins, several pathways for the production of compatible solutes and an anti-freeze protein. In addition, genes were predicted to encode functions related to pH homeostasis and metal resistance related to growth in the acidic metal-containing mine water. Metagenome analyses identified microorganisms capable of nitrogen fixation and exhibiting a primarily autotrophic lifestyle driven by the oxidation of the ferrous iron and inorganic sulfur compounds contained in the sulfidic mine waters. The study identified a low diversity of abundant microorganisms adapted to a low-temperature acidic environment as well as identifying some of the strategies the microorganisms employ to grow in this extreme environment.

Place, publisher, year, edition, pages
2015. Vol. 91, no 4, fiv011
Keyword [en]
metagenome, acid mine drainage, psychrotolerant, Acidithiobacillus ferrivorans, low temperature
National Category
URN: urn:nbn:se:umu:diva-106514DOI: 10.1093/femsec/fiv011ISI: 000355327300002OAI: diva2:841919
Available from: 2015-07-15 Created: 2015-07-14 Last updated: 2015-07-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Liljeqvist, MariaDopson, Mark
By organisation
Department of Molecular Biology (Faculty of Science and Technology)
In the same journal
FEMS Microbiology Ecology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 35 hits
ReferencesLink to record
Permanent link

Direct link