Organisationsprofil

Organisationsprofil

Based on the recent calculations climate change is more rapid in the Arctic than in any other region. Previously frozen ground is thawing and releasing substantial quantities of carbon which microbes can decompose. Microbes mineralize the carbon fraction and convert it to carbon dioxide and methane. Climate change models estimate that C released from thawing arctic permafrost might represent the largest future transfer of C from the biosphere to the atmosphere resulting in a positive feedback loop. In addition to CH4 and CO2 flux, thawing permafrost releases nitrogen which can result as nitrous oxide flux, another greenhouse gas with high climate warming potential.

Our interest is in understanding how microbes in the arctic soils respond to the warming on a molecular scale and what is the function and role of the microbial communities in production of greenhouse gases in the arctic. The tools used are based on high throughput sequencing of the community DNA and RNA i.e. metagenomics and metatranscriptomics. Read more from our webpage https://www.helsinki.fi/en/researchgroups/molecular-environmental-biosciences/research/arctic-microbial-ecology

Internationellt och inhemskt samarbete Publikationer och projekt inom de senaste fem åren.

Projekt 2017 2019

Changing Climate Alters Microbial Community Function In Arctic Regions

Hultman, J., Viitamäki, S. & Pessi, I. S.

Helsingin yliopisto

01/01/201731/12/2019

Projekt: Helsingfors Universitetets treåriga forskningsprojekt

Publikationer 2017 2018

Black Queen Evolution and Trophic Interactions Determine Plasmid Survival after the Disruption of the Conjugation Network

Cairns, J., Koskinen, K., Penttinen, R., Patinen, T., Hartikainen, A., Jokela, R., Ruusulehto, L., Viitamäki, S., Mattila, S., Hiltunen, T. & Jalasvuori, M., 2 okt 2018, I : mSystems. 3, 5, 14 s., e00104-18.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Construction and characterization of synthetic bacterial community for experimental ecology and evolution

Cairns, J., Jokela, R., Hultman, J., Tamminen, M., Virta, M. & Hiltunen, T., 14 aug 2018, I : Frontiers in Genetics. 9, 12 s., 312.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Host range of antibiotic resistance genes in wastewater treatment plant influent and effluent

Hultman, J., Tamminen, M., Pärnänen, K., Cairns, J., Karkman, A. & Virta, M., 1 apr 2018, I : FEMS Microbiology Ecology. 94, 4, s. 1-10 10 s., fiy038.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Maternal gut and breast milk microbiota affect infant gut antibiotic resistome and mobile genetic elements

Pärnänen, K., Karkman, A., Hultman, J., Lyra, C., Bengtsson-Palme, J., Larsson, D. G. J., Rautava, S., Isolauri, E., Salminen, S., Kumar, H., Satokari, R. & Virta, M., 24 sep 2018, I : Nature Communications. 9, 11 s., 3891.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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Aktiviteter 2017 2019

  • 7 Arrangemang av och deltagande i konferens/workshop/kurs/seminarium
  • 7 !!Oral presentation
  • 3 !!Invited talk
  • 2 Akademisk besök på annan institution

Medical University Graz

Sirja Viitamäki (Besökande forskare), Igor S Pessi (Besökande forskare)
10 apr 201918 apr 2019

Aktivitet: Typer för besök till extern institutionAkademisk besök på annan institution

Functions and activity of soil microbial communities in the changing Arctic

Sirja Viitamäki (!!Speaker)
4 mar 2019

Aktivitet: Typer för tal eller presentation!!Oral presentation

15th Symposium on Bacterial Genetics and Ecology

Sirja Viitamäki (Poster presentation)
26 maj 201930 maj 2019

Aktivitet: Typer för deltagande i eller organisering av evenemangArrangemang av och deltagande i konferens/workshop/kurs/seminarium

Genome-centric investigation of soil microbial communities along a natural climate gradient in the Finnish Arctic

Igor S Pessi (!!Speaker)
13 nov 2018

Aktivitet: Typer för tal eller presentation!!Oral presentation

Microbial community dynamics in the arctic soils

Jenni Hultman (!!Speaker)
26 apr 2018

Aktivitet: Typer för tal eller presentation!!Invited talk

Press / media