Forskergrupper
Forskning
Half of the accessible oxygen on earth is produced by marine microorganisms, which constitute ~95% of the biomass in the marine ecosystem. Viruses interfere with these biogeochemical cycles by lysing ~50% of the microbial biomass every day. Most marine viruses are bacteriophages, since bacteria are the most common prey items. However viruses infecting photosynthetic organisms like Cyanobacteria (cyanophages) and Phytoplankton (algal viruses) are also important players in marine ecology as their host organisms are responsible for most of the primary production in the ocean. My primary research objective is to gain information about these viral-host interactions in the marine environment.
Research topics:
- Describe and qualify the dynamics and diversity of viral communities and their effects on the host community in natural and experimental ecosystems.
- Generate new knowledge of two mortality mechanisms causing lysis of marine phytoplankton: viral infection and programmed cell death (PCD), and explore relations between them.
- Identify viral genes that may play important roles in the metabolic processes of their hosts, increasing both the host and the phage fitness in these environments (co-evolution).
- Uncovering the keys to success of viruses in extreme marine environments like Arctic deep-sea hydrothermal vent and methane seeps systems.
Publikasjoner
Vitenskapelig foredrag
- Sandaa, Ruth-Anne (2024). How low abundant viruses and their hosts coexist in the ocean. (ekstern lenke)
- Bjune, Anne Elisabeth; Bratbak, Gunnar; Eliassen, Sigrunn et al. (2023). Omlegging fra tradisjonelle forelesninger til studentaktiv læring – eksempel fra et grunnemne i biolog. (ekstern lenke)
- Sandaa, Ruth-Anne (2023). How do low abundant viruses and their host survive in the ocean?. (ekstern lenke)
- Saltvedt, Marius Rydningen; Wang, Haina; Dahle, Håkon et al. (2023). PERSISTENT VIRUS PRODUCTION BY PHYTOPLANKTON. (ekstern lenke)
- Wang, Haina; Saltvedt, Marius Rydningen; Blanc-Mathieu, Romain et al. (2022). Genomes of two giant viruses and their capacity in the infection cycles. (ekstern lenke)
- Sandaa, Ruth-Anne (2021). Algal virus infection strategies and their effect on host diversity . (ekstern lenke)
- Sandaa, Ruth-Anne (2020). Diversity in marine virus-host relationships and their effect of phytoplankton community structure. . (ekstern lenke)
- Sandaa, Ruth-Anne; Blanc-Mathieu, Romain; Dahle, Håkon et al. (2019). Friends or foes, strategies for stable co-existance in algel viruses infecting haptophytes. (ekstern lenke)
- Sandaa, Ruth-Anne (2018). Reluctant affairs-algal virus-haptophyte relationship in the Ocean. . (ekstern lenke)
- Sandaa, Ruth-Anne (2018). Diversity of marine prymnesioviruses and their strategies for stable co-existence with their phytoplankton hosts. (ekstern lenke)
- Tsagaraki, Tatiana; Egge, Jorun Karin; Bratbak, Gunnar et al. (2017). Microbial Food web structure in a changing Arctic.. (ekstern lenke)
- Paulsen, Maria Lund; Doré, Hugo; Garczarek, Laurence et al. (2017). Synechococcus in the Arctic Ocean. (ekstern lenke)
- Sandaa, Ruth-Anne; Ray, Jessica Louise; Enoult, Francois et al. (2017). Light and depth - main drivers of marine virus diversity and dynamics in the Arctic - Metagenomic analysis of total viral assemblages from surface to the deep . (ekstern lenke)
- Sandaa, Ruth-Anne (2017). Marine viruses, small but important. (ekstern lenke)
- Sandaa, Ruth-Anne (2017). Marine viruses small but ecologically important. (ekstern lenke)
- Ray, Jessica Louise; Enault, François; Johannessen, Torill Vik et al. (2017). from light to dark and shallow to deep: Metagenomic analysis of total virus assemblages from arctic seawater provides a first glance of season- and depth-driven virus diversity and dynamics. (ekstern lenke)
- Ray, Jessica Louise; Johannessen, Torill Vik; Wilson, Brian C. et al. (2016). Development of a semi-automated method for metagenomic characterization of total virus assemblages from seasonal high-latitude seawater samples. (ekstern lenke)
- Ray, Jessica Louise; Lawrence, Janice; Petelenz-Kurdziel, Elzbieta Anna et al. (2016). Role of appendicularians in aquatic viral ecology: particle trapping, ingestion and consequences for the marine microbial food web. (ekstern lenke)
- Sandaa, Ruth-Anne (2016). Marine Viruses, small but major players in the ocean ecosystem. (ekstern lenke)
- Sandaa, Ruth-Anne (2016). Marine Viruses are small but important. (ekstern lenke)
- Edvardsen, Bente; Egge, Elianne Sirnæs; Stadniczenko, Sandra Gran et al. (2015). Diversity, seasonal dynamics and biotic interactions in marine phytoplankton and virus communities. (ekstern lenke)
- Edvardsen, Bente; Egge, Elianne Sirnæs; Stadniczenko, Sandra Gran et al. (2015). Diversity and seasonal dynamics of marine haptophytes and their viruses and the role of biotic interactions. (ekstern lenke)
- Edvardsen, Bente; Egge, Elianne Sirnæs; Johannessen, Torill Vik et al. (2014). Diversity and seasonal dynamics of marine haptophytes and their viruses. (ekstern lenke)
- Edvardsen, Bente; Egge, Elianne Sirnæs; Torill Vik, Johannessen et al. (2013). Diversity and dynamics of marine haptophytes and their viruses. (ekstern lenke)
- Egge, Elianne Sirnæs; Eikrem, Wenche; Hostyeva, Vladyslava et al. (2012). Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing. (ekstern lenke)
- Egge, Elianne Sirnæs; Eikrem, Wenche; Hostyeva, Vladyslava et al. (2012). Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing. (ekstern lenke)
- Sandaa, Ruth-Anne; Töpper, B; Larsen, Aud et al. (2012). Viruses, a controlling force on prokaryotic diversity?. (ekstern lenke)
- Pagarete, Antonio; Puntervoll, Pål; Lanzén, Anders et al. (2011). Geographic segregation and mechanisms of genetic evolution between coccolithovirus populations: a genomic study. (ekstern lenke)
- Ray, Jessica Louise; Haramaty, Liti; Fredricks, Helen F et al. (2010). Host-viruses interactions in blooming and non-blooming haptophytes. (ekstern lenke)
- Ray, Jessica Louise; Larsen, Aud; Sandaa, Ruth-Anne (2009). Live and let die: Molecular methods for studying host-virus interactions using Chrysochromulina ericina and CeV-01B as a model system. (ekstern lenke)
- Thingstad, T.F.; Bellerby, Richard; Bratbak, Gunnar et al. (2008). Increased level of CO2 in the ecosphere may modify the structure of marine plankton. (ekstern lenke)
- Sandaa, Ruth-Anne (2007). Burden or Benefit- virus-host interactions in the marine environment. (ekstern lenke)
- Thyrhaug, Runar; Einen, Jørn; Sandaa, Ruth-Anne et al. (2007). Total numbers and activity of environmental airborne bacteria. (ekstern lenke)
- Sandaa, Ruth-Anne (2006). Viral community analysis. (ekstern lenke)
- Jacobsen, Anita; Martinez-Martinez, J; Verity, P et al. (2005). Are colonies or colonial cells of Phaeocystis pouchetii (prymnesiophyceae) susceptible to virus infection?. (ekstern lenke)
- Sandaa, Ruth-Anne (2005). VIRAL DIVERSITY IN THE MARINE ENVIRONMENT. EFFECT ON THE SPECIES RICHNESS OF PLANKTONIC ORGANISMS. (ekstern lenke)
- Sandaa, Ruth-Anne; Larsen, Aud; Thingstad, Tron Frede (2005). Viral diversity in the marine environment. Effect on the species richness and activity of planktonic organisms. (ekstern lenke)
- Sandaa, Ruth-Anne; Bratbak, Gunnar (2004). Viral diversity in solar saltern. (ekstern lenke)
- Sandaa, Ruth-Anne; Brunvold, Laila; Jakobsen, Anita et al. (2003). CHARACTERISATION OF BACTERIAL COMMUNITIES ASSOCIATED WITH EARLY LIFE STAGES OF CULTURED GREAT SCALLOP (PECTEN MAXIMUS), USING DENATURING GRADIENT GEL ELECTROPHORESIS (DGGE). (ekstern lenke)
- Larsen, Aud; Thyrhaug, Runar; Sandaa, Ruth-Anne et al. (2002). Marine phytoplankton viruses - ecology, physiology and host virus interactions. (ekstern lenke)
- Larsen, Aud; Castberg, Tonje; Sandaa, Ruth-Anne et al. (2002). Marine Phytoplankton Viruses-Ecology, Physiology and Host Virus Interactions. (ekstern lenke)
- Brussaard, Corina; Sandaa, Ruth-Anne; Heldal, Mikal (2001). The discovery of a novel algal virus type infecxtion of the phytoplankter Micromonas pusilla by a double stranded RNA reovirus. (ekstern lenke)
- Bratbak, Gunnar; Brussaard, Corina P. D.; Castberg, Tonje et al. (2000). Diversity and succession of algae, virus and bacteria in nutrient enriched seawater enclosures. (ekstern lenke)
- Castberg, Tonje; Sandaa, Ruth-Anne; Bratbak, Gunnar (2000). Bacterial population dynamics and diversity after viral lysis of three different algal species. (ekstern lenke)
- Sandaa, Ruth-Anne; Heldal, Mikal; Castberg, Tonje et al. (2000). Isolation and characterization of two marine viruses infecting Chrysochromulina ericina and Pyramimonas orientalis. (ekstern lenke)
- Sandaa, Ruth-Anne; Larsen, Aud; Castberg, Tonje et al. (2000). Population dynamics in the virioplankton community during marine algal blooms. (ekstern lenke)
- Brussaard, Corina P.D.; Sandaa, Ruth-Anne; Bratbak, Gunnar (2000). Infection of Micromonas pusilla (Prasinophyceae) by a dsRNA virus. (ekstern lenke)
- Sandaa, Ruth-Anne; Thorsen, Berit Kristine; Mazengia, Kibret Yimer et al. (1998). Transfer of the naturally occuring plasmid pRAS1 affects the microbialdiversity in marine sediments. (ekstern lenke)
- Sandaa, Ruth-Anne; Daae, Frida Lise; Catberg, Tonje et al. (1998). Changes im the microbiological community structure and diversity in metal contaminated soils. (ekstern lenke)
- Thorsen, Berit Kristine; Sandaa, Ruth-Anne; Mazengia, Kibret Yimer et al. (1998). Transfer of the naturally occuring plasmid pRAS1 affects the microbiological diversity in marine sediments [poster]. (ekstern lenke)
- Enger, Øivind; Sandaa, Ruth-Anne (1998). Bacterial activity and diversity measured by differential-PCR. (ekstern lenke)
- Eide, A.G.; Mazengia, K.Y.; Torsvik, Vigdis Lid et al. (1998). Spread of the plasmid pRAS1 in sea water and marine sediment - characterization of recipients [poster]. (ekstern lenke)
- Torsvik, Vigdis Lid; Drønen, Karine; Sandaa, Ruth-Anne et al. (1997). Monitoring environmental impact of antropogenic activity on microbial communities. (ekstern lenke)
- Torsvik, Vigdis Lid; Daae, Frida Lise; Sandaa, Ruth-Anne et al. (1997). Novel techniques for analysing microbial diversity in natural and perturbed environments. (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis Lid (1996). Effect of heavy metal contamination on the microbial community structure in soil. (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis Lid (1996). Molecular methods for investigating changes in microbial communities. (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis Lid (1996). Changes in the microbial diversity in soil due to heavy metal contamination. (ekstern lenke)
Poster
- Ruiz Martinez, Eliana; Larsen, Aud; Sandaa, Ruth-Anne et al. (2024). Phaeoviruses present in cultured and natural kelp species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway.. (ekstern lenke)
- Wang, Haina; Saltvedt, Marius Rydningen; Blanc-Mathieu, Romain et al. (2022). Genomes of two giant viruses and their capacity in the infection cycles. (ekstern lenke)
- Saltvedt, Marius Rydningen; Wang, Haina; Lawrence, Janice et al. (2022). Friend or enemy: The story of a frenemy relationship between a virus and its host. (ekstern lenke)
- Arsin, Hasan; Fedøy, Anita-Elin; Røyseth, Victoria et al. (2020). Enzyme discovery from the edge of (sequence) space. (ekstern lenke)
- Arsin, Hasan; Fedøy, Anita-Elin; Røyseth, Victoria et al. (2020). Bringing deep-sea enzymes to light. (ekstern lenke)
- Sandaa, Ruth-Anne; Johanessen, Torill; Lawrence, Janice et al. (2017). Diversity of novel viruses infecting haptophytes. (ekstern lenke)
- Kegel, Jessica U.; Johannessen, Torill Vik; John, Uwe et al. (2016). RNA-Seq analysis of host and viral gene expression highlights the interaction between Prymnesium kappa and the virus HeV-RF02.. (ekstern lenke)
- Sandaa, Ruth-Anne; Ray, Jessica Louise; Storesund, Julia Endresen et al. (2016). Marine viral diversity in the Arctic - from surface to deep waters through the long polar night and day.. (ekstern lenke)
- Le Moine Bauer, Sven; Steen, Ida Helene; Sandaa, Ruth-Anne et al. (2014). Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data. (ekstern lenke)
- Egge, Elianne Sirnæs; Eikrem, Wenche; Hostyeva, Vladyslava et al. (2012). Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing. (ekstern lenke)
- Ray, Jessica Louise; Sandaa, Ruth-Anne; Larsen, Aud (2011). Virus resistance in eukariotic marine phytoplankton - a status update. (ekstern lenke)
- Larsen, Aud; Sandaa, Ruth-Anne; Thyrhaug, Runar et al. (2011). Pelagiske virus i Kongsfjord. (ekstern lenke)
- Ray, Jessica Louise; Sandaa, Ruth-Anne; Larsen, Aud (2011). Virus resistance in marine phytoplankton - a status update. (ekstern lenke)
- Ray, Jessica Louise; Haramaty, Liti; Fredricks, Helen F et al. (2010). Host-viruses interactions in blooming and non-blooming haptophytes. (ekstern lenke)
- Heldal, Mikal; Norland, Svein; Erichsen, Egil Severin et al. (2005). Mg2+ plays an important role in marine bacteria. (ekstern lenke)
- Sandaa, Ruth-Anne; Larsen, Aud; Thingstad, Tron Frede (2004). Microbial biodiversity control. (ekstern lenke)
- Brunvold, Laila; Sandaa, Ruth-Anne; Jakobsen, Anita et al. (2003). Inlet water flown over a biofilm with probiotic bacteria-a possible strategy to increase survival of scallop larvae?. (ekstern lenke)
- Sandaa, Ruth-Anne; Bratbak, Gunnar (2000). A method for diversity analysis of viruses in small volumes of seawater. (ekstern lenke)
- Bratbak, Gunnar; Brussaard, Corina; Castberg, Tonje et al. (1999). Virus i Havet. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Øyvind (1993). In situ transfer in the marine environment of a broad host range plasmid indigenious to Aeromonas salmonicida. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Ø. (1993). Transfer of a broad host range plasmid from Aeromonas salmonicida to bacteria indigenous to the marine environment. (ekstern lenke)
Vitenskapelig artikkel
- Ruiz Martinez, Eliana; Mckeown, Dean A.; Schroeder, Decland C. et al. (2023). Phaeoviruses Present in Cultured and Natural Kelp Species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway. (ekstern lenke)
- Mayers, Kyle; Kuhlisch, Constanze; Basso, Jonelle T. R. et al. (2023). Grazing on Marine Viruses and Its Biogeochemical Implications. (ekstern lenke)
- Tjendra, Jesslyn; Storesund, Julia Endresen; Dahle, Håkon et al. (2023). Molecular evidence of parallel evolution in a cyanophage. (ekstern lenke)
- Blanc-Mathieu, Romain; Dahle, Håkon; Hofgaard, Antje et al. (2021). A persistent giant algal virus, with a unique morphology, encodes an unprecedented number of genes involved in energy metabolism. (ekstern lenke)
- Schatz, Daniella; Schleyer, Guy; Saltvedt, Marius Rydningen et al. (2021). Ecological significance of extracellular vesicles in modulating host-virus interactions during algal blooms. (ekstern lenke)
- Mayers, Kyle; Lawrence, Janice; Skaar, Katrine Sandnes et al. (2021). Removal of large viruses and their dispersal through fecal pellets of the appendicularian Oikopleura dioica during Emiliania huxleyi bloom conditions. (ekstern lenke)
- ARSIN, Hasan; Jasilionis, Andrius; Dahle, Håkon et al. (2021). Exploring codon adjustment strategies towards Escherichia coli-based production of viral proteins encoded by HTH1, a novel prophage of the marine bacterium Hypnocyclicus thermotrophus. (ekstern lenke)
- Sandaa, Ruth-Anne; Saltvedt, Marius Rydningen; Dahle, Håkon et al. (2021). Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence. (ekstern lenke)
- Rozenberg, A.; Opperman, J.; Wietek, J. et al. (2020). Lateral gene transfer of anion-conducting channelrhodopsins between green algae and giant viruses. (ekstern lenke)
- Basso, J.T.R; Ankrah, N.Y.D; Tuttle, M.J. et al. (2020). Genetically similar temperate phages form coalitions with their shared host that lead to niche-specific fitness effects.. (ekstern lenke)
- Thingstad, T. Frede; Våge, Selina; Bratbak, Gunnar et al. (2020). Reproducing the virus-to-copepod link in Arctic mesocosms using host fitness optimization.. (ekstern lenke)
- Gran Stadniczeñko, Sandra; Krabberød, Anders Kristian; Sandaa, Ruth-Anne et al. (2019). Seasonal dynamics of algae-infecting viruses and their inferred interactions with protists. (ekstern lenke)
- Sandaa, Ruth-Anne; Bratbak, Gunnar (2018). Is the virus important? And some other questions. (ekstern lenke)
- Sandaa, Ruth-Anne; Storesund, Julia Endresen; Olesin, Emily Maria et al. (2018). Seasonality drives microbial community structure, shaping both eukaryotic and prokaryotic host–viral relationships in an Arctic marine ecosystem. (ekstern lenke)
- Le Moine Bauer, Sven; Stensland, Anne; Daae, Frida Lise et al. (2018). Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. (ekstern lenke)
- Storesund, Julia Endresen; Sandaa, Ruth-Anne; Thingstad, T. Frede et al. (2017). Linking bacterial community structure to advection and environmental impact along a coast-fjord gradient of the Sognefjord, western Norway. (ekstern lenke)
- Ruiz Martinez, Eliana; Oosterhof, Monique; Sandaa, Ruth-Anne et al. (2017). Emerging interaction patterns in the Emiliania huxleyi-EhV system. (ekstern lenke)
- Johannessen, Torill Vik; Larsen, Aud; Bratbak, Gunnar et al. (2017). Seasonal dynamics of haptophytes and dsDNA algal viruses suggest complex virus-host relationship. (ekstern lenke)
- Sandaa, Ruth-Anne; Pree, Bernadette; Larsen, Aud et al. (2017). The response of heterotrophic prokaryote and viral communities to labile organic carbon inputs is controlled by the predator food chain structure. (ekstern lenke)
- Ruiz Martinez, Eliana; Baudoux, Anne-Claire; Simon, Nathalie et al. (2017). Micromonas versus virus: New experimental insights challenge viral impact. (ekstern lenke)
- Pitta, Paraskevi; Nejstgaard, Jens Christian; Tsagaraki, Tatiana et al. (2016). Confirming the "rapid phosphorus transfer from microorganisms to mesozooplankton in the eastern mediterranean sea" scenario through a mesocosm experiment. (ekstern lenke)
- Paulsen, Maria Lund; Doré, Hugo; Garczarek, Laurence et al. (2016). Synechococcus in the Atlantic Gateway to the Arctic Ocean. (ekstern lenke)
- Johannessen, Torill Vik; Bratbak, Gunnar; Larsen, Aud et al. (2015). Characterisation of three novel giant viruses reveals huge diversity among viruses infecting Prymnesiales (Haptophyta). (ekstern lenke)
- Storesund, Julia Endresen; Erga, Svein Rune; Ray, Jessica Louise et al. (2015). Top-down and bottom-up control on bacterial diversity in a western Norwegian deep-silled fjord. (ekstern lenke)
- Egge, Elianne Sirnæs; Johannessen, Torill Vik; Andersen, Tom et al. (2015). Seasonal diversity and dynamics of haptophytes in the Skagerrak, Norway, explored by high-throughput sequencing. (ekstern lenke)
- Pagarete, António; Grébert, Théophile; Stepanova, Olga et al. (2015). Tsv-N1: A novel DNA algal virus that infects tetraselmis striata. (ekstern lenke)
- Thingstad, Tron Frede; Våge, Selina; Storesund, Julia Endresen et al. (2014). A theoretical analysis of how strain-specific viruses can control microbial species diversity. (ekstern lenke)
- Ray, Jessica Louise; Haramaty, Liti; Thyrhaug, Runar et al. (2014). Virus infection of Haptolina ericina and Phaeocystis pouchetii implicates evolutionary conservation of programmed cell death induction in marine haptophyte-virus interactions. (ekstern lenke)
- Pagarete, António; Kusonmano, Kanthida; Petersen, Kjell et al. (2014). Dip in the gene pool: Metagenomic survey of natural coccolithovirus communities. (ekstern lenke)
- Pagarete, Antonio; Chow, Cheryl-Emiliane T.; Johannessen, Torill Vik et al. (2013). Strong seasonality and interannual recurrence in marine myovirus communities. (ekstern lenke)
- Tøpper, Birte; Thingstad, Tron Frede; Sandaa, Ruth-Anne (2013). Effects of differences in organic supply on bacterial diversity subject to viral lysis. (ekstern lenke)
- Pagarete, Antonio; Lanzén, Anders; Puntervoll, Pål et al. (2013). Genomic sequence and analysis of EhV-99B1, a new coccolithovirus from the Norwegian fjords. (ekstern lenke)
- Heldal, Mikal; Norland, Svein; Erichsen, Egil Severin et al. (2012). Mg2+ as an indicator of nutritional status in marine bacteria. (ekstern lenke)
- Ray, Jessica Louise; Dondrup, Michael; Modha, Sejal et al. (2012). Finding a needle in the virus metagenome haystack - micro-metagenome analysis captures a snapshot of the diversity of a bacteriophage armoire. (ekstern lenke)
- Ray, Jessica Louise; Tøpper, Birte; An, Shu et al. (2012). Effect of increased pCO2 on bacterial assemblage shifts in response to glucose addition in Fram Strait seawater mesocosms. (ekstern lenke)
- Ogata, Hiroyuki; Ray, Jessica Louise; Toyoda, Kensuke et al. (2011). Two new subfamilies of DNA mismatch repair proteins (MutS) specifically abundant in the marine environment. (ekstern lenke)
- Goldsmith, Dawn B.; Crosti, Giuseppe; Dwivedi, Bhakti et al. (2011). Development of phoH as a Novel Signature Gene for Assessing Marine Phage Diversity. (ekstern lenke)
- Fahlgren, C; Bratbak, Gunnar; Sandaa, Ruth-Anne et al. (2011). Diversity of airborne bacteria in samples collected using different devices for aerosol collection. (ekstern lenke)
- Van der Meeren, Terje; Brunvold, Laila; Sandaa, Ruth-Anne et al. (2011). Water quality and microbial community structure in juvenile Atlantic cod (Gadus morhua L.) cultures. (ekstern lenke)
- Tøpper, Birte; Larsen, Aud; Thingstad, Tron Frede et al. (2010). Bacterial community composition in an Arctic phytoplankton mesocosm bloom: the impact of silicate and glucose. (ekstern lenke)
- Sandaa, Ruth-Anne; Gomez-Consarnau, Laura; Pinhassi, Jarone et al. (2009). Viral control of bacterial biodiversity - evidence from a nutrient-enriched marine mesocosm experiment. (ekstern lenke)
- Sandaa, Ruth-Anne (2008). Burden or benefit? Virus-host interactions in the marine environment. (ekstern lenke)
- Larsen, Jens Borggaard; Larsen, Aud; Bratbak, Gunnar et al. (2008). Phylogenetic analysis of members of the Phycodnaviridae virus family, using amplified fragments of the major capsid protein gene. (ekstern lenke)
- Monier, Adam; Larsen, Jens Borggaard; Sandaa, Ruth-Anne et al. (2008). Marine mimivirus relatives are probably large algal viruses. (ekstern lenke)
- Thingstad, T. Frede; Bellerby, Richard; Bratbak, Gunnar et al. (2008). Counterintuitive carbon-to-nutrient coupling in an Arctic pelagic ecosystem. (ekstern lenke)
- Larsen, Jens Borggaard; Larsen, Aud; Thyrhaug, Runar et al. (2008). Response of marine viral populations to a nutrient induced phytoplankton bloom at different pCO2 levels. (ekstern lenke)
- Sandaa, Ruth-Anne; Brunvold, Laila; Magnesen, Thorolf et al. (2008). Monitoring the opportunistic bacteria Pseudoalteromonas sp. LT-13 in a great scallop, Pecten maximus hatchery. (ekstern lenke)
- Sandaa, Ruth-Anne; Clokie, Martha ; Mann, Nicholas H. (2008). Photosynthetic genes in viral populations with a large genomic size range from Norwegian coastal waters. (ekstern lenke)
- Brunvold, Laila; Sandaa, Ruth-Anne; Mikkelsen, Helene et al. (2007). Characterisation of bacterial communities associated with intensively reared cod (Gadus morhua) larvae using Denaturing Gradient Gel Electrophoresis (DGGE). (ekstern lenke)
- Sandaa, Ruth-Anne; Larsen, Aud (2006). Seasonal variations in virus-host populations in Norwegian coastal waters: Focusing on the cyanophage community infecting marine Synechococcus spp. (ekstern lenke)
- Kurabachew, M; Enger, O; Sandaa, Ruth-Anne et al. (2004). A multiplex polymerase chain reaction assay for genus-, group- and species-specific detection of mycobacteria. (ekstern lenke)
- Brussaard, Corina P.D.; Noordeloos, A.A.M.; Sandaa, Ruth-Anne et al. (2004). Discovery of a dsRNA virus infecting the marine photosynthetic protist Micromonas pusilla. (ekstern lenke)
- Larsen, Aud; Flaten, Gro Anita Fonnes; Sandaa, Ruth-Anne et al. (2004). Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. (ekstern lenke)
- Larsen, Aud; Flaten, Gro Anita Fonnes; Sandaa, Ruth-Anne et al. (2004). Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. (ekstern lenke)
- Sandaa, Ruth-Anne; Magnesen, Thorolf (2003). Characterization of the bacterial community associated with early stages of great scallop (Pecten maximus) using denaturing gradient gel electrophoresis (DGGE). (ekstern lenke)
- Øvreås, Lise; Bourne, David; Sandaa, Ruth-Anne et al. (2003). Response of bacterial and viral communities to nutrient manipulations in seawater mesocosms. (ekstern lenke)
- Sandaa, Ruth-Anne; Skjoldal, Evy Foss; Bratbak, Gunnar (2003). Virioplankton community structure along a salinity gradient in a solar saltern. (ekstern lenke)
- Kurabachew, Mekonnen; Sandaa, Ruth-Anne; Enger, Øivind et al. (2003). Sequence analysis in the 23S rDNA region of Mycobacterium tuberculosis and related species. (ekstern lenke)
- Kurabachew, Mekonnen; Enger, Øivind; Sandaa, Ruth-Anne et al. (2003). Amplified ribosomal DNA restriction analysis in the differentiation of related species of mycobacteria. (ekstern lenke)
- Sandaa, Ruth-Anne; Magnesen, Thorolf; Torkildsen, Lise et al. (2003). Characterisation of bacterial communities associated with early life stages of cultured Great Scallop, Pecten maximus using Denaturing Gradient Gel Electrophoresis (DGGE). (ekstern lenke)
- Castberg, Tonje; Thyrhaug, Runar; Larsen, Aud et al. (2002). Isolation and characterization of a virus that infects Emiliania huxleyi (Haptophyceae). (ekstern lenke)
- Sandaa, Ruth-Anne; Heldal, Mikal; Castberg, Tonje et al. (2001). Isolation and characterization of two viruses with large genome size infecting Chrysochromulina ericina (Prymneriophyceae) and Pyramimonas orientalis (Prasinophyceae). (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis; Enger, Øivind (2001). Influence of long-term heavy-metal contamination on microbial communities in soil. (ekstern lenke)
- Castberg, Tonje; Larsen, Aud; Sandaa, Ruth-Anne et al. (2001). Microbial population dynamics and diversity during a bloom of the marine coccolithophorid Emiliania huxleyi (Haptophyta). (ekstern lenke)
- Larsen, Aud; Castberg, Tonje; Sandaa, Ruth-Anne et al. (2001). Population dynamics and diversity of phytoplankton, bacteria and viruses in a seawater enclosure. (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis Lid; Enger, Øivind et al. (1999). Analysis of bacterial communities in heavy metal contaminated soils at different levels of resolution. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Øivind; Torsvik, Vigdis Lid (1999). Abundance and diversity of Archaea in heavy-metal contaminated soils. (ekstern lenke)
- Torsvik, Vigdis Lid; Daae, Frida Lise; Sandaa, Ruth-Anne et al. (1998). Novel techniques for analysing microbial diversity in natural and perturbed environments. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Øivind; Torsvik, Vigdis Lid (1998). Rapid method for fluorometric quantification of DNA in soil. (ekstern lenke)
- Chatzinotas, Antonis; Sandaa, Ruth-Anne; Schönhuber, Wilhelm et al. (1998). Analysis of broad-scale differences in microbial community composition of two pristine forest soils. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Ø. (1996). High frequency transfer of a broad host range plasmid present in an atypical strain of the fish pathogen Aeromonas salmonicida. (ekstern lenke)
- Sandaa, Ruth-Anne; Enger, Ø. (1994). Transfer in Marine sediments of the naturally occuring plasmid pRAS1 encoding multiple antibiotic resistance. (ekstern lenke)
- Enger, Ø.; Sandaa, Ruth-Anne (1994). Immunomagnetic beads as a tool in conjugation experiments. (ekstern lenke)
- Andersen, S. R.; Sandaa, Ruth-Anne (1994). Distribution of tetracycline resistant determinants among Gram.... (ekstern lenke)
- Sandaa, Ruth-Anne (1994). Spredning av antibiotikaresistens blandt bakterier fra .... (ekstern lenke)
- Sandaa, Ruth-Anne (1993). Transfer and maintenance of the plasmid RP4 in marine sediments. (ekstern lenke)
- Sandaa, Ruth-Anne; Torsvik, Vigdis Lid; Goksøyr, J (1992). Transferable drug resistance in bacteria isolated from fish farm sedime ents. (ekstern lenke)
Vitenskapelig oversiktsartikkel/review
- Aevarsson, Arnthór; Kaczorowska, Anna-Karina; Adalsteinsson, Björn Thor et al. (2021). Going to extremes - A metagenomic journey into the dark matter of life. (ekstern lenke)
- Carreira, Cátia; Lonborg, Christian; Kühl, Michael et al. (2020). Fungi and viruses as important players in microbial mats. (ekstern lenke)
- Våge, Selina; Bratbak, Gunnar; Egge, Jorun Karin et al. (2018). Simple models combining competition, defence and resource availability have broad implications in pelagic microbial food webs. (ekstern lenke)
Faglig foredrag
- Saltvedt, Marius Rydningen; Lawrence, Janice; Wang, Haina et al. (2021). Vital and all over the place – A neglected group of frenemy viruses. (ekstern lenke)
- Sandaa, Ruth-Anne (2013). Unexpected diversity in algal viruses. (ekstern lenke)
- Sandaa, Ruth-Anne; Töpper, Birte; Larsen, Aud et al. (2013). VIRUSES, CONTROLLING FORCE ON HOST DIVERSITY? -Life in the fast-line,. (ekstern lenke)
- Thyrhaug, Runar; Larsen, Aud; Bratbak, Gunnar et al. (2010). Use of flow cytometry in air and marine microbiological research. (ekstern lenke)
Doktorgradsavhandling
- Storesund, Julia Endresen; Sandaa, Ruth-Anne (2016). Bacterial, archaeal and viral community structure in a deep Norwegian fjord. (ekstern lenke)
- Brunvold, Laila; Sandaa, Ruth-Anne (2010). Microbial ecology in the early life stages of intensively reared marine species. (ekstern lenke)
- Sandaa, Ruth-Anne (1994). Conjugal transfer of antibiotic resistance genes in marine sediments. (ekstern lenke)
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Leksikonartikkel
Populærvitenskapelig foredrag
- Sandaa, Ruth-Anne (2007). Virus-viktig økologisk faktor i havet. (ekstern lenke)
- Larsen, Aud; Sandaa, Ruth-Anne (2007). Av og til er en nanometer nok. (ekstern lenke)
- Thorsen, Berit Kristine; Sandaa, Ruth-Anne; Enger, Øivind (1996). Plasmid diversity in Icelandic hot springs. (ekstern lenke)
- Sandaa, Ruth-Anne (1993). Gene-transfer in marine sediments. (ekstern lenke)
- Sandaa, Ruth-Anne (1993). Antibiotika resistens i oppdrettsanlegg. (ekstern lenke)
- Sandaa, Ruth-Anne (1993). Antibiotika-resistens i oppdrettsanlegg. Hvor kommer den fra - hvordan kan den spres?. (ekstern lenke)
- Sandaa, Ruth-Anne (1993). Gene transfer between bacteria in marine sediments. (ekstern lenke)
Mastergradsoppgave
Populærvitenskapelig artikkel
Intervju
Rapport
Se en full oversikt over publikasjoner i Cristin
1.Sandaa, R.-A., V. Torsvik, J. Goksøyr. 1992. Transferable drug resistance in bacteria from fish-farm sediments. Can. J. Microbiol. 38:1061-1065.
2.Sandaa, R.-A. 1993. Transfer and maintenance of the plasmid RP4 in marine sediments. Microb. Releases. 2:115-119.
3.Enger, Ø., R.-A. Sandaa. 1994. Immunomagnetic beads as a tool in conjugation experiments. J. of Microb. Meth. 19:111-115.
4.Sandaa R.-A., and Ø. Enger. 1994. High frequency transfer of a broad host range plasmid indigenous to the fish pathogen Aeromonas salmonicida. Dis. Aquat. Org. 24:71-75.
5.Sandaa, R.-A., and Ø. Enger. 1994. Transfer of a naturally occurring plasmid in Aeromonas salmonicida 718 in unsterile marine sediments. Appl. Environ. Microbiol. 60: 4234-4238.
6.Andersen, S.R., R.-A. Sandaa. 1994. Distribution of tetracycline resistance determinants among gram-negative bacteria isolated from polluted and unpolluted marine sediments. Appl. Environ. Microbiol. 60:908-912.
7.Sandaa, R-A., Ø. Enger, and V. Torsvik. 1998. Rapid method for fluorometric quantification of bacterial DNA in soil. Soil Biol. Biochem. 30:265-268.
8.Torsvik, V., F.L. Daae, R.-A. Sandaa, and L. Øvreås. 1998. Review. Novel Techniques for analysing microbial diversity in natural and pertutibed environments. J Biotech 64:53-62
9.Chatzinotas A., R.-A. Sandaa, D. Hahn, W. Schönhuber, F.L. Daae, V. Torsvik, J. Zeyer, and R. Amann. 1998. Analysis of Broad-scale Differences in Microbial Community Compositions of Two Pristine Forest Soils. Syst. Appl. Microbiol. 21:579-587
10. Sandaa, R-A., V. Torsvik, Ø. Enger, F.L. Daae, T. Castberg and D. Hahn. 1999. Analysis of bacterial communities in heavy metal contaminated soils at different levels of resolution. FEMS Microb. Ecol. 30:237-251.
11. Sandaa, R-A., Ø. Enger, and V. Torsvik. 1999. Abundance of Archaea in Heavy Metal Contaminated Soils. Appl. Environ. Microbiol. 65:3293-3297
12. Torsvik, V., F.L. Daae, R.-A. Sandaa and L. Øvreås. 2000. Molecular Biology and genetic diversity of microorganisms. In: Journey to diverse Microbial world: Adaptation to exotic environments. J. Seckbach (Ed.) Kluwer Academic Publishers. the Netherlands. pp 43-57.
13. Sandaa, R.-A., V. Torsvik and Ø. Enger. 2001. Influence by long term heavy metal contamination on microbial communities in soil. Soil Biol. Biochem. 33:287-295.
14. Larsen, A., T. Castberg, R.-A. Sandaa, C. Brussaard, J. Egge, J., M. Heldal, A. Paulino, R. Thyrhaug, E. van Hannen, and G. Bratbak. 2001. Population dynamics and diversity of phytoplankton, bacteria and virus in a seawater enclosure. Mar. Ecol. Prog. Ser. 221: 47-57.
15. Castberg, T, A. Larsen, R-A Sandaa, C.P.D Brussaard, J. Egge, M. Heldal, R. Thyrhaug, E. van Hannen, G. Bratbak. 2001. Microbial population dynamics and diversity during blooms of the marine coccolithophorid Emiliania huxleyi (Haptophyta). Mar. Ecol. Prog. Ser. 221:39-46.
16. Smalla K., E. Krogerrecklenfort, H. Heuer, W. Dejonghe, E. Top, M. Osborn, J. Niewint, C. Tebbe, M. Barr, M. Bailey, A. Greated, C. Thomas, S. Turner, P. Young, D. Nikolakopoulou, A. Karagouni, A. Wolters, J. D. van Elsas, K. Drønen, R. Sandaa, S. Borin, J. Brabhu, E. Grohmann and P. Sobecky. 2000. PCR-based detection of mobile genetic elements in total community DNA. Microbiol. 146:1256-1257
17. Sandaa, R.-A., M. Heldal, T. Castberg, R. Thyrhaug and G. Bratbak. 2001. Isolation and characterization of two viruses with large genom size infecting Chrysochromulina ericina (Prymnesiophyceae) and Pyramimonas orientalis (Prasinophyceae). Virol. 290:272-280
18. Castberg, T, R. Thyrhaug, A. Larsen, R-A. Sandaa, M. Heldal, G. Bratbak. 2002. Isolation and characterization of virus infecting Emiliania huxleyi (Haptophyceae). Phycol. 38:767-774
19. Øvreås, L., D. Bourne, R-A. Sandaa, E. O. Casamayor, S. Benlloch, V. Goddard, G. Smerdon, M. Heldal, T. F. Thingstad. 2003. Response of bacterial and viral communities to nutrient manipulations in seawater mesocosms. Aquat. Microb. Ecol. 31: 109–121
20. Sandaa R-A., T. Magnesen, L. Torkildsen, Ø. Bergh. 2003. Characterisation of bacterial communities associated with early life stages of cultured Great Scallop, Pecten maximus using Denaturing Gradient Gel Electrophoresis (DGGE). Syst. Appl. Microbiol. 26:302-311
21. Sandaa, R-A., E. Skjoldal, G. Bratbak. 2003. Virioplankton community structure along a salinity gradient in a solar saltern. Extremophiles. 7:347-351,
22. Kurabachew M.D., Ø. Enger, Sandaa, R-A., B. Bjorvatn. 2003. Sequence analysis in the 23SDNA region of Mycobacterium tuberculosis and related species. J. Microbiol. Methods. 54:373-380
23. Kurabachew M.D., Sandaa, R-A., Ø. Enger, B. Bjorvatn. 2003. Amplified Ribosomal DNA Restriction Analysis (ARDRA) in the differentiation of related species of Mycobacteria. J. Microbiol. Methods. 55: 83-90.
24. Larsen, A., G.A .Fonnes, R-A. Sandaa, T. Castberg, R .Thyrhaug, S.E. Erga, S. Jacquet, and G. Bratbak. 2004. Spring phytoplankton bloom in Norwegian coastal waters: Microbial community dynamics, succession and diversity. Limn. Oceanog. 49:180-190
25. Brussaard, C.P.D, R-A. Sandaa, G. Bratbak. 2004. The discovery of a novel algal virus type infection of the phytoplankter Micromonas pusilla by a double stranded RNA reovirus. Virol. 319:280-291
26. Kurabachew M.D., Ø. Enger, R-A. Sandaa, R. Skuce and B. Bjorvatn. 2004. Multiplex PCR assay for the detection of mycobacteria and species identification of Mycobacterium bovis and Mycobacterium tuberculosis. Diagn. Microbiol. Infect. Dis. 49:99-104.
27. Sandaa R-A., A. Larsen. 2006. Seasonal variations in viral-host populations in Norwegian coastal waters: Focusing on the cyanophage community infecting marine Synechococcus species. Appl. Environ. Microbiol. 72:4610-4618.
28. Brunvold, L, R-A. Sandaa, H. Bleie, D. Herke, A.B. Olsen, H. Mikkelsen, E. Welde, A. Nerland, and Ø. Bergh. 2007. Characterisation of bacterial communities associated with intensively reared cod (Gadus morhua) larvae using Denaturing Gradient Gel Electrophoresis (DGGE). Aquaculture, 272: 319-327
29. Sandaa R-A., M. Clokie, N. Mann. 2008. Photosynthetic genes in viral populations within a huge genomic size range, isolated from Norwegian coastal waters. FEMS Microb. Ecol. 63:2-11
30. Sandaa, R-A., L. Brunvold, T. Magnesen, and Ø. Bergh. 2008. Monitoring opportunistic bacteria in a hatchery for great scallop, Pecten maximus by means of Denaturing Gradient Gel Elecrophoresis (DGGE). Aquaculture 276:14–21.
31. Monier A., J. Borggaard Larsen, R-A. Sandaa, G. Bratbak, J-M. Claverie, H. Ogata. 2008. Marine mimivirus relatives are probably large algal viruses. Virol. J. 5:12
32. Larsen, J.B., A. Larsen, R. Thyrhaug, G. Bratbak, and R-A. Sandaa. 2008. Marine viral populations detected during a nutrient induced phytoplankton bloom at elevated pCO2 levels. Biogeosciences 5: 523–533
33. Larsen, J.B. A. Larsen, G. Bratbak, and R.-A. Sandaa. 2008. Phylogenetic analysis of members of the Phycodnaviridae virus family using amplified fragments of the major capsid protein gene. Appl. Environ. Microbiol. 74:3048-3057.
34. Sandaa, R-A. 2008. Review. Burden or Benefit-viral –host interaction in the marine environment. Review in Research in Microbiology, 159, 374-381.
35. Thingstad TF, R.G.J. Bellerby, G. Bratbak, K.Y. Børsheim, J.K. Egge, M. Heldal, A. Larsen, C. Neill, J. Nejstgaard, S. Norland, R-A. Sandaa, E.F. Skjoldal, T. Tanaka, R. Thyrhaug, B. Töpper. 2008. Counterintuitive food web response to organic carbon enrichment in anarctic pelagic ecosystem. Nature, 455:387-390
36. Sandaa, R-A. 2009. Viral pool, environmental. In: Encyclopedia in Microbiology, third edition, Ed: Moselio Schaechter, Section: Environmental Microbiology and Ecology. pp 553-567. Elsevier Ltd.
37. Sandaa, R-A., S. Short, D. Schröder. 2009, Fingerprinting aquatic virus communities. In: Methods in Aquatic Viral Ecology. American Society of Limnology and Oceanography, Inc., Chapter 2, pp 9–18.
38. Sandaa, R.-A., L. Gomez-Consarnau, J. Pinhassi, L. Riemann, A. Malits, M. Weinbauer, P.A. Gasol, and T. F. Thingstad. 2009. Viruses control of bacterial biodiversity - Linkages between viral and bacterial community structure in a nutrient enriched mesocosm experiment. Environmental Microbiology, 11:2585-2595.
39. Birte Töpper, Aud Larsen, Tron Frede Thingstad, Runar Thyrhaug & Ruth-Anne Sandaa. 2010.Dynamics in bacterial community composition during an Arctic phytoplankton mesocosm bloom. Polar Biology, 33:1557–1565.
40. Fahlgren, C., Bratbak, G., Sandaa, R-A., Thyrhaug, R., Zweifel, U.L. 2010. Diversity of airborne bacteria in samples collected by use of different devices for aerosol collection. Aerobiologia 1:14.
41. van der Meeren T, Brunvold, L., Sandaa, R-A., Bergh, Ø., Castberg, T.,Thyrhaug, R., Mangor-Jensen, A. 2011. Water quality and microbial community structure in juvenile Atlantic cod (Gadus morhua L.) cultures. Aquaculture International, 316:111-120.
42. Ogata, H., Ray, J., Toyoda, K., Sandaa, R.-A, Nagasaki K, Bratbak, G., Claverie, J.M. 2011. Girus-encoded MutS subfamilies abundant in the marine environment. ISME journal, 1-9.
43. Goldsmith, Crosti, Varsani, McDaniel, Dwivedi, Carlson, Suttle, Weinbauer, Sandaa, Breitbart. 2011. Pho Regulon Genes in Phage: Development of a Novel Signature Gene for Assessing Marine Phage Diversity. Appl. Microb. Ecol,77:7730-7739
44. Heldal, M, Norland, S, Erichsen, E.S., Sandaa, R.-A.Larsen, A., Thingstad, F. and Bratbak, G. 2011. Mg2+ as an indicator of nutritional status in marine bacteria, ISME Journal, 1–7.
45. Modha, S. Ray, J., Dondrup, M., Steen, I. H., Sandaa, R.-A. and Clokie, M.. Finding the needle in the metagenomic viral haystack - Micro-metagenome analysis captures a snapshot of the evolution of a bacteriophage armoire, submitted to PLoS One
Prosjekter
- Micropolar
- Microbial network organisation (MINOS)
- Diversity and dynamics of marine Haptophytes (HAPTODIV)