• Down-regulation of the bacterial protein biosynthesis machinery in response to weeks, years, and decades of soil warming 

      Söllinger, Andrea; Séneca, Joana; Mathilde, Borg Dahl; Motleleng, Liabo Lillien; Prommer, Judith; Verbruggen, Erik; Sigurdsson, Bjarni D.; Janssens, Ivan A.; Peñuelas, Josep; Urich, Tim; Richter, Andreas; Tveit, Alexander (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-25)
      How soil microorganisms respond to global warming is key to infer future soil-climate feedbacks, yet poorly understood. Here, we applied metatranscriptomics to investigate microbial physiological responses to mediumterm (8 years) and long-term (>50 years) subarctic grassland soil warming of +6°C. Besides indications for a community-wide up-regulation of centralmetabolic pathways and cell replication, ...
    • Long-term warming-induced trophic downgrading in the soil microbial food web 

      Dahl, Mathilde Borg; Söllinger, Andrea; Sigurðsson, Páll; Janssens, Ivan; Peñuelas, Josep; Sigurdsson, Bjarni D.; Richter, Andreas; Tveit, Alexander; Urich, Tim (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-01)
      Climatic warming has been hypothesized to accelerate organic matter decomposition by soil microorganisms and thereby enhance carbon (C) release to the atmosphere. However, the long-term consequences of soil warming on belowground biota interactions are poorly understood. Here we investigate how geothermal warming by 6 °C for more than 50 years affects soil microbiota. Using metatranscriptomics we ...
    • Microbial responses to herbivory-induced vegetation changes in a high-Arctic peatland 

      Bender, Kathrin Marina; Svenning, Mette Marianne; Hu, Yuntao; Richter, Andreas; Schückel, Julia; Jørgensen, Bodil; Liebner, Susanne; Tveit, Alexander Tøsdal (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-30)
      Herbivory by barnacle geese (<i>Branta leucopsis</i>) alters the vegetation cover and reduces ecosystem productivity in high-Arctic peatlands, limiting the carbon sink strength of these ecosystems. Here we investigate how herbivory-induced vegetation changes affect the activities of peat soil microbiota using metagenomics, metatranscriptomics and targeted metabolomics in a comparison of fenced ...
    • Widespread soil bacterium that oxidizes atmospheric methane 

      Tveit, Alexander Tøsdal; Hestnes, Anne Grethe; Robinson, Serina Lee; Schintlmeister, Arno; Dedysh, Svetlana N; Jehmlich, Nico; Bergen, Martin von; Herbold, Craig; Wagner, Michael; Richter, Andreas; Svenning, Mette Marianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-08)
      Increasing atmospheric methane concentrations contribute significantly to global warming. The only known biological sink for atmospheric methane is oxidation by methane oxidizing bacteria (MOB). Due to the lack of pure cultures, the physiology and metabolic potential of MOB that oxidize atmospheric methane remains a mystery. Here, we report on isolation and characterization of a MOB that can grow ...