• Anticancer activity in Planctomycetes 

      Calisto, Rita; Sæbø, Eirik Færøy; Storesund, Julia Endresen; Øvreås, Lise; Herfindal, Lars; Lage, Olga M. (Peer reviewed; Journal article, 2019-01-07)
      There is a strong need to develop new drugs against many severe diseases. Therapy resistance is a major problem, for instance, in infectious diseases and cancer. Drug discovery has again turned to nature to search for ...
    • Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study 

      Tsagaraki, Tatiana Margo; Pree, Bernadette; Leiknes, Øystein; Larsen, Aud; Bratbak, Gunnar; Øvreås, Lise; Egge, Jorun Karin; Spanek, Roman; Paulsen, Maria Lund; Olsen, Yngvar; Vadstein, Olav; Thingstad, T. Frede (Peer reviewed; Journal article, 2018)
      Combining a minimum food web model with Arctic microbial community dynamics, we have suggested that top-down control by copepods can affect the food web down to bacterial consumption of organic carbon. Pursuing this ...
    • Changes in marine prokaryote composition with season and depth over an Arctic polar year 

      Wilson, Bryan; Müller, Oliver; Nordmann, Eva-Lena; Seuthe, Lena; Bratbak, Gunnar; Øvreås, Lise (Peer reviewed; Journal article, 2017-04-13)
      As the global climate changes, the higher latitudes are seen to be warming significantly faster. It is likely that the Arctic biome will experience considerable shifts in ice melt season length, leading to changes in ...
    • CREST – Classification Resources for Environmental Sequence Tags 

      Lanzén, Anders; Jørgensen, Steffen Leth; Huson, Daniel H.; Gorfer, Markus; Grindhaug, Svenn Helge; Jonassen, Inge; Øvreås, Lise; Urich, Tim (Peer reviewed; Journal article, 2012-11-08)
      Sequencing of taxonomic or phylogenetic markers is becoming a fast and efficient method for studying environmental microbial communities. This has resulted in a steadily growing collection of marker sequences, most notably ...
    • Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates 

      Müller, Oliver; Bang‐Andreasen, Toke; White III, Richard Allen; Elberling, Bo; Taş, Neslihan; Kneafsey, Timothy J.; Jansson, Janet K; Øvreås, Lise (Peer reviewed; Journal article, 2018-12-13)
      Thawing permafrost can stimulate microbial activity, leading to faster decomposition of formerly preserved organic matter and CO2 release. Detailed knowledge about the vertical distribution of the responsible microbial ...
    • Evolution of temperature optimum in Thermotogaceae and the prediction of trait values of uncultured organisms 

      Dahle, Håkon; Hannisdal, Bjarte; Steinsbu, Bjørn Olav; Ommedal, Hege; Einen, Jørn; Jensen, Sigmund; Larsen, Øyvind; Øvreås, Lise; Norland, Svein (Peer reviewed; Journal article, 2011-06-03)
      Quantitative characterization of the mode and rate of phenotypic evolution is rarely applied to prokaryotes. Here, we present an analysis of temperature optimum (Topt) evolution in the thermophilic family Thermotogaceae, ...
    • Flow cytometric quantification of viruses in activated sludge 

      Brown, Matthew; Camézuli, Stella; Davenport, Russell J.; Petelenz-Kurdziel, Elzbieta Anna; Øvreås, Lise; Curtis, Tom (Peer reviewed; Journal article, 2015-10-18)
      Viruses may play a critical role in the microbial dynamics of activated sludge systems; however the difficulty of their quantification makes long term and large scale studies costly, timely and challenging. Thus a flow ...
    • High-quality draft genome of the methanotroph Methylovulum psychrotolerans Str. HV10-M2 isolated from plant material at a high-altitude environment 

      Mateos-Rivera, Alejandro; Islam, Tajul; Marshall, Ian P.G.; Schreiber, Lars; Øvreås, Lise (Peer reviewed; Journal article, 2018-04-12)
      Here we present the genome of Methylovulum psychrotolerans strain HV10-M2, a methanotroph isolated from Hardangervidda national park (Norway). This strain represents the second of the two validly published species genus ...
    • Inter-laboratory testing of the effect of DNA blocking reagent G2 on DNA extraction from low-biomass clay samples 

      Jacobsen, Carsten Suhr; Nielsen, Tue Kjærgaard; Vester, Jan Kjølhede; Stougaard, Peter; Nielsen, Jeppe Lund; Voriskova, Jana; Winding, Anne; Baldrian, Petr; Liu, Binbin; Frostegård, Åsa; Pedersen, Dorthe; Tveit, Alexander Tøsdal; Svenning, Mette Marianne; Tebbe, Christoph C.; Øvreås, Lise; Jakobsen, Pia Bach; Blazewicz, Steven J.; Hubablek, Valerie; Bertilsson, Stefan; Hansen, Lars Hestbjerg; Cary, S. Craig; Holben, William E.; Ekelund, Flemming; Bælum, Jacob (Peer reviewed; Journal article, 2018-04-09)
      Here we show that a commercial blocking reagent (G2) based on modified eukaryotic DNA significantly improved DNA extraction efficiency. We subjected G2 to an inter-laboratory testing, where DNA was extracted from the same ...
    • Novel and Unexpected Microbial Diversity in Acid Mine Drainage in Svalbard (78° N), Revealed by Culture-Independent Approaches 

      Garcia-Moyano, Antonio; Austnes, Andreas Erling; Lanzén, Anders; Gonzalez-Toril, Elena; Aguilera, Ángeles; Øvreås, Lise (Peer reviewed; Journal article, 2015-10-13)
      Svalbard, situated in the high Arctic, is an important past and present coal mining area. Dozens of abandoned waste rock piles can be found in the proximity of Longyearbyen. This environment offers a unique opportunity for ...
    • The ocean sampling day consortium 

      Kopf, Anna; Bicak, Mesude; Kottmann, Renzo; Schnetzer, Julia; Kostadinov, Ivaylo; Lehmann, Katja; Fernandez-Guerra, Antonio; Jeanthon, Christian; Rahav, Eyal; Ullrich, Matthias; Wichels, Antje; Gerdts, Gunnar; Polymenakou, Paraskevi; Kotoulas, Giorgos; Siam, Rania; Abdallah, Rehab Z; Sonnenschein, Eva C; Cariou, Thierry; O’Gara, Fergal; Jackson, Stephen; Orlic, Sandi; Steinke, Michael; Busch, Julia; Duarte, Bernardo; Caçador, Isabel; Canning-Clode, João; Bobrova, Oleksandra; Marteinsson, Viggo; Reynisson, Eyjolfur; Loureiro, Clara M; Luna, Gian M; Quero, Grazia M; Löscher, Carolin R; Kremp, Anke; DeLorenzo, Marie E; Øvreås, Lise; Tolman, Jennifer; LaRoche, Julie; Penna, Antonella; Frischer, Marc; Davis, Timothy; Katherine, Barker; Meyer, Christopher P; Ramos, Sandra; Magalhães, Catarina; Jude-Lemeilleur, Florence; Aguirre-Macedo, Ma L; Wang, Shiao; Poulton, Nicole; Jones, Scott; Collin, Rachel; Fuhrman, Jed A; Conan, Pascal; Alonso, Cecilia; Stambler, Noga; Goodwin, Kelly; Yakimov, Michael M; Baltar, Federico; Bodrossy, Levente; Van De Kamp, Jodie; Frampton, Dion M; Ostrowski, Martin; Van Ruth, Paul; Malthouse, Paul; Claus, Simon; Deneudt, Klaas; Mortelmans, Jonas; Pitois, Sophie; Wallom, David; Salter, Ian; Costa, Rodrigo; Schroeder, Declan C; Kandil, Mahrous M; Amaral, Valentina; Biancalana, Florencia; Santana, Rafael; Pedrotti, Maria L; Yoshida, Takashi; Ogata, Hiroyuki; Ingleton, Tim; Munnik, Kate; Rodriguez-Ezpeleta, Naiara; Berteaux-Lecellier, Veronique; Wecker, Patricia; Cancio, Ibon; Vaulot, Daniel; Bienhold, Christina; Ghazal, Hassan; Chaouni, Bouchra; Essayeh, Soumya; Ettamimi, Sara; Zaid, El H; Boukhatem, Noureddine; Bouali, Abderrahim; Chahboune, Rajaa; Barrijal, Said; Timinouni, Mohammed; El Otmani, Fatima; Bennani, Mohamed; Mea, Marianna; Todorova, Nadezhda; Karamfilov, Ventzislav; ten Hoopen, Petra; Cochrane, Guy; L’Haridon, Stephane; Bizsel, Kemal C; Vezzi, Alessandro; Lauro, Federico M; Martin, Patrick; Jensen, Rachelle M; Hinks, Jamie; Gebbels, Susan; Rosselli, Riccardo; De Pascale, Fabio; Schiavon, Riccardo; dos Santos, Antonina; Villar, Emilie; Pesant, Stéphane; Cataletto, Bruno; Malfatti, Francesca; Edirisinghe, Ranjith; Silveira, Jorge A H; Barbier, Michele; Turk, Valentina; Tinta, Tinkara; Fuller, Wayne J; Salihoglu, Ilkay; Serakinci, Nedime; Ergoren, Mahmut C; Bresnan, Eileen; Iriberri, Juan; Nyhus, Paul A F; Bente, Edvardsen; Karlsen, Hans E; Golyshin, Peter N; Gasol, Josep M; Moncheva, Snejana; Dzhembekova, Nina; Johnson, Zackary; Sinigalliano, Christopher D; Gidley, Maribeth L; Zingone, Adriana; Danovaro, Roberto; Tsiamis, George; Clark, Melody S; Costa, Ana C; El Bour, Monia; Martins, Ana M; Collins, R E; Ducluzeau, Anne-Lise; Martinez, Jonathan; Costello, Mark J; Amaral-Zettler, Linda A; Gilbert, Jack A; Davies, Neil; Field, Dawn; Glöckner, Frank O (Peer reviewed; Journal article, 2015-06-19)
      Ocean Sampling Day was initiated by the EU-funded Micro B3 (Marine Microbial Biodiversity, Bioinformatics, Biotechnology) project to obtain a snapshot of the marine microbial biodiversity and function of the world’s oceans. ...
    • Planctomycetes dominate biofilms on surfaces of the kelp Laminaria hyperborea 

      Bengtsson, Mia M.; Øvreås, Lise (Peer reviewed; Journal article, 2010)
      Background: Bacteria belonging to Planctomycetes display several unique morphological and genetic features and are found in a wide variety of habitats on earth. Their ecological roles in these habitats are still poorly ...
    • Response of Methanogens in Arctic Sediments to Temperature and Methanogenic Substrate Availability 

      Blake, Lynsay; Tveit, Alexander Tøsdal; Øvreås, Lise; Head, Ian M.; Gray, Neil (Peer reviewed; Journal article, 2015-06-17)
      Although cold environments are major contributors to global biogeochemical cycles, comparatively little is known about their microbial community function, structure, and limits of activity. In this study a microcosm based ...
    • Seasonal dynamics of bacterial biofilms on the kelp Laminaria hyperborea 

      Bengtsson, Mia M.; Sjøtun, Kjersti; Øvreås, Lise (Peer reviewed; Journal article, 2010-05)
      Seasonal variations of the cell density and bacterial community composition in biofilms growing on the surface of the kelp Laminaria hyperborea from 2 sites on the southwestern coast of Norway were investigated using total ...
    • Simple models combining competition, defence and resource availability have broad implications in pelagic microbial food webs 

      Våge, Selina; Bratbak, Gunnar; Egge, Jorun Karin; Heldal, Mikal; Larsen, Aud; Norland, Svein; Paulsen, Maria Lund; Pree, Bernadette; Sandaa, Ruth-Anne; Skjoldal, Evy Foss; Tsagaraki, Tatiana Margo; Øvreås, Lise; Thingstad, T. Frede (Peer reviewed; Journal article, 2018-09)
      In food webs, interactions between competition and defence control the partitioning of limiting resources. As a result, simple models of these interactions contain links between biogeochemistry, diversity, food web structure ...
    • Utilization of kelp-derived carbon sources by kelp surface-associated bacteria 

      Bengtsson, Mia M.; Sjøtun, Kjersti; Storesund, Julia Endresen; Øvreås, Lise (Peer reviewed; Journal article, 2011-01)
      The surfaces of kelp are covered with bacteria that may utilize kelp-produced carbon and thereby contribute significantly to the carbon flux in kelp forest ecosystems. There is scant knowledge about the identity of these ...