Hjem
Ruth-Anne Sandaas bilde

Ruth-Anne Sandaa

Professor
  • E-postRuth.Sandaa@uib.no
  • Telefon+47 55 58 46 46
  • Besøksadresse
    Thormøhlens gate 53 A/B
  • Postadresse
    Postboks 7803
    5020 Bergen

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.
Vitenskapelig artikkel
  • Vis forfatter(e) 2021. Removal of large viruses and their dispersal through fecal pellets of the appendicularian Oikopleura dioica during Emiliania huxleyi bloom conditions. Limnology and Oceanography.
  • Vis forfatter(e) 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. Viruses.
  • Vis forfatter(e) 2021. Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence. Biological Reviews. 1-16.
  • Vis forfatter(e) 2021. A persistent giant algal virus, with a unique morphology, encodes an unprecedented number of genes involved in energy metabolism. Journal of Virology. 1-58.
  • Vis forfatter(e) 2020. Reproducing the virus-to-copepod link in Arctic mesocosms using host fitness optimization. Limnology and Oceanography.
  • Vis forfatter(e) 2020. Lateral gene transfer of anion-conducting channelrhodopsins between green algae and giant viruses. Current Biology.
  • Vis forfatter(e) 2020. Genetically similar temperate phages form coalitions with their shared host that lead to niche-specific fitness effects. The ISME Journal.
  • Vis forfatter(e) 2019. Seasonal dynamics of algae-infecting viruses and their inferred interactions with protists. Viruses. 1-16.
  • Vis forfatter(e) 2018. Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. Frontiers in Microbiology. 1-17.
  • Vis forfatter(e) 2018. Seasonality drives microbial community structure, shaping both eukaryotic and prokaryotic host–viral relationships in an Arctic marine ecosystem. Viruses. 1-22.
  • Vis forfatter(e) 2018. Is the virus important? And some other questions. Viruses. 1-4.
  • Vis forfatter(e) 2017. The response of heterotrophic prokaryote and viral communities to labile organic carbon inputs is controlled by the predator food chain structure. Viruses. 1-15.
  • Vis forfatter(e) 2017. Seasonal dynamics of haptophytes and dsDNA algal viruses suggest complex virus-host relationship. Viruses. 18 sider.
  • Vis forfatter(e) 2017. Micromonas versus virus: New experimental insights challenge viral impact. Environmental Microbiology. 2068-2076.
  • Vis forfatter(e) 2017. Linking bacterial community structure to advection and environmental impact along a coast-fjord gradient of the Sognefjord, western Norway. Progress in Oceanography. 13-30.
  • Vis forfatter(e) 2017. Emerging interaction patterns in the Emiliania huxleyi-EhV system. Viruses. 1-14.
  • Vis forfatter(e) 2016. Synechococcus in the Atlantic Gateway to the Arctic Ocean. Frontiers in Marine Science.
  • Vis forfatter(e) 2016. Confirming the "rapid phosphorus transfer from microorganisms to mesozooplankton in the eastern mediterranean sea" scenario through a mesocosm experiment. Journal of Plankton Research. 502-521.
  • Vis forfatter(e) 2015. Tsv-N1: A novel DNA algal virus that infects tetraselmis striata. Viruses. 3937-3953.
  • Vis forfatter(e) 2015. Top-down and bottom-up control on bacterial diversity in a western Norwegian deep-silled fjord. FEMS Microbiology Ecology.
  • Vis forfatter(e) 2015. Seasonal diversity and dynamics of haptophytes in the Skagerrak, Norway, explored by high-throughput sequencing. Molecular Ecology. 3026-3042.
  • Vis forfatter(e) 2015. Characterisation of three novel giant viruses reveals huge diversity among viruses infecting Prymnesiales (Haptophyta). Virology. 180-188.
  • Vis forfatter(e) 2014. Virus infection of Haptolina ericina and Phaeocystis pouchetii implicates evolutionary conservation of programmed cell death induction in marine haptophyte-virus interactions. Journal of Plankton Research. 943-955.
  • Vis forfatter(e) 2014. Dip in the gene pool: Metagenomic survey of natural coccolithovirus communities. Virology. 129-137.
  • Vis forfatter(e) 2014. A theoretical analysis of how strain-specific viruses can control microbial species diversity. Proceedings of the National Academy of Sciences of the United States of America. 7813-7818.
  • Vis forfatter(e) 2013. Strong seasonality and interannual recurrence in marine myovirus communities. Applied and Environmental Microbiology. 6253-6259.
  • Vis forfatter(e) 2013. Genomic sequence and analysis of EhV-99B1, a new coccolithovirus from the Norwegian fjords. Intervirology. 60-66.
  • Vis forfatter(e) 2013. Effects of differences in organic supply on bacterial diversity subject to viral lysis. FEMS Microbiology Ecology. 202-213.
  • Vis forfatter(e) 2012. Mg2+ as an indicator of nutritional status in marine bacteria. The ISME Journal. 524-530.
  • Vis forfatter(e) 2012. Finding a needle in the virus metagenome haystack - micro-metagenome analysis captures a snapshot of the diversity of a bacteriophage armoire. PLOS ONE. 13 sider.
  • Vis forfatter(e) 2012. Effect of increased pCO2 on bacterial assemblage shifts in response to glucose addition in Fram Strait seawater mesocosms. FEMS Microbiology Ecology. 713-723.
  • Vis forfatter(e) 2011. Water quality and microbial community structure in juvenile Atlantic cod (Gadus morhua L.) cultures. Aquaculture. 111-120.
  • Vis forfatter(e) 2011. Two new subfamilies of DNA mismatch repair proteins (MutS) specifically abundant in the marine environment. The ISME Journal. 1143-1151.
  • Vis forfatter(e) 2011. Diversity of airborne bacteria in samples collected using different devices for aerosol collection. Aerobiologia. 107-120.
  • Vis forfatter(e) 2011. Development of phoH as a Novel Signature Gene for Assessing Marine Phage Diversity. Applied and Environmental Microbiology. 7730-7739.
  • Vis forfatter(e) 2010. Bacterial community composition in an Arctic phytoplankton mesocosm bloom: the impact of silicate and glucose. Polar Biology. 1557-1565.
  • Vis forfatter(e) 2009. Viral control of bacterial biodiversity - evidence from a nutrient-enriched marine mesocosm experiment. Environmental Microbiology. 2585-2597.
  • Vis forfatter(e) 2008. Response of marine viral populations to a nutrient induced phytoplankton bloom at different pCO2 levels. Biogeosciences. 523-533.
  • Vis forfatter(e) 2008. Phylogenetic analysis of members of the Phycodnaviridae virus family, using amplified fragments of the major capsid protein gene. Applied and Environmental Microbiology. 3048-3057.
  • Vis forfatter(e) 2008. Photosynthetic genes in viral populations with a large genomic size range from Norwegian coastal waters. FEMS Microbiology Ecology. 2-11.
  • Vis forfatter(e) 2008. Monitoring the opportunistic bacteria Pseudoalteromonas sp. LT-13 in a great scallop, Pecten maximus hatchery. Aquaculture. 14-21.
  • Vis forfatter(e) 2008. Marine mimivirus relatives are probably large algal viruses. Virology Journal. 8 sider.
  • Vis forfatter(e) 2008. Counterintuitive carbon-to-nutrient coupling in an Arctic pelagic ecosystem. Nature. 387-391.
  • Vis forfatter(e) 2008. Burden or benefit? Virus-host interactions in the marine environment. Research in Microbiology. 374-381.
  • Vis forfatter(e) 2007. Characterisation of bacterial communities associated with intensively reared cod (Gadus morhua) larvae using Denaturing Gradient Gel Electrophoresis (DGGE). Aquaculture. 319-327.
  • Vis forfatter(e) 2006. Seasonal variations in virus-host populations in Norwegian coastal waters: Focusing on the cyanophage community infecting marine Synechococcus spp. Applied and Environmental Microbiology. 4610-4618.
  • Vis forfatter(e) 2004. Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. Limnology and Oceanography. 180-190.
  • Vis forfatter(e) 2004. Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity. Limnology and Oceanography. 180-190.
  • Vis forfatter(e) 2004. Discovery of a dsRNA virus infecting the marine photosynthetic protist Micromonas pusilla. Virology. 280-291.
  • Vis forfatter(e) 2004. A multiplex polymerase chain reaction assay for genus-, group- and species-specific detection of mycobacteria. Diagnostic microbiology and infectious disease. 99-104.
  • Vis forfatter(e) 2003. Virioplankton community structure along a salinity gradient in a solar saltern. Extremophiles. 347-351.
  • Vis forfatter(e) 2003. Sequence analysis in the 23S rDNA region of Mycobacterium tuberculosis and related species. Journal of Microbial Methods. 373-380.
  • Vis forfatter(e) 2003. Response of bacterial and viral communities to nutrient manipulations in seawater mesocosms. Aquatic Microbial Ecology. 109-212.
  • Vis forfatter(e) 2003. Characterization of the bacterial community associated with early stages of great scallop (Pecten maximus) using denaturing gradient gel electrophoresis (DGGE). Systematic and Applied Microbiology. 302-311.
  • Vis forfatter(e) 2003. Characterisation of bacterial communities associated with early life stages of cultured Great Scallop, Pecten maximus using Denaturing Gradient Gel Electrophoresis (DGGE). Systematic and Applied Microbiology. 302-311.
  • Vis forfatter(e) 2003. Amplified ribosomal DNA restriction analysis in the differentiation of related species of mycobacteria. Journal of Microbiological Methods. 83-90.
  • Vis forfatter(e) 2002. Isolation and characterization of a virus that infects Emiliania huxleyi (Haptophyceae). Journal of Phycology. 767-774.
  • Vis forfatter(e) 2001. Population dynamics and diversity of phytoplankton, bacteria and viruses in a seawater enclosure. Marine Ecology Progress Series. 47-57.
  • Vis forfatter(e) 2001. Microbial population dynamics and diversity during a bloom of the marine coccolithophorid Emiliania huxleyi (Haptophyta). Marine Ecology Progress Series. 39-46.
  • Vis forfatter(e) 2001. Isolation and characterization of two viruses with large genome size infecting Chrysochromulina ericina (Prymneriophyceae) and Pyramimonas orientalis (Prasinophyceae). Virology. 272-280.
  • Vis forfatter(e) 2001. Influence of long-term heavy-metal contamination on microbial communities in soil. Soil Biology and Biochemistry. 287-295.
  • Vis forfatter(e) 1999. Analysis of bacterial communities in heavy metal contaminated soils at different levels of resolution. FEMS Microbiology Ecology. 237-251.
  • Vis forfatter(e) 1999. Abundance and diversity of Archaea in heavy-metal contaminated soils. Applied and Environmental Microbiology. 3293-3297.
  • Vis forfatter(e) 1998. Rapid method for fluorometric quantification of DNA in soil. Soil Biology and Biochemistry. 265-268.
  • Vis forfatter(e) 1998. Novel techniques for analysing microbial diversity in natural and perturbed environments. Journal of Biotechnology. 53-62.
  • Vis forfatter(e) 1998. Analysis of broad-scale differences in microbial community composition of two pristine forest soils. Systematic and Applied Microbiology. 579-587.
  • Vis forfatter(e) 1996. High frequency transfer of a broad host range plasmid present in an atypical strain of the fish pathogen Aeromonas salmonicida. Diseases of Aquatic Organisms. 71-75.
  • Vis forfatter(e) 1994. Transfer in Marine sediments of the naturally occuring plasmid pRAS1 encoding multiple antibiotic resistance. Applied and Environmental Microbiology.
  • Vis forfatter(e) 1994. Spredning av antibiotikaresistens blandt bakterier fra ... Miljøvirkninger ved havbruk.
  • Vis forfatter(e) 1994. Immunomagnetic beads as a tool in conjugation experiments. Journal of Microbiological Methods. 111-115.
  • Vis forfatter(e) 1994. Distribution of tetracycline resistant determinants among Gram... Applied and Environmental Microbiology. 908-912.
  • Vis forfatter(e) 1993. Transfer and maintenance of the plasmid RP4 in marine sediments. Microbial Releases.
  • Vis forfatter(e) 1992. Transferable drug resistance in bacteria isolated from fish farm sedime ents. Canadian Journal of Microbiology (print). 1061-1065.
Rapport
  • Vis forfatter(e) 1994. Miljøeffekter ved utsetting av mikroorganismer. SFT, 93513. .
  • Vis forfatter(e) 1994. Miljøeffekter ved utsetting av mikroorganismer. Dir. for naturforvaltning, BTEK 69404. .
Faglig foredrag
  • Vis forfatter(e) 2013. VIRUSES, CONTROLLING FORCE ON HOST DIVERSITY? -Life in the fast-line,.
  • Vis forfatter(e) 2013. Unexpected diversity in algal viruses.
  • Vis forfatter(e) 2010. Use of flow cytometry in air and marine microbiological research.
Populærvitenskapelig foredrag
  • Vis forfatter(e) 2007. Virus-viktig økologisk faktor i havet.
  • Vis forfatter(e) 2007. Av og til er en nanometer nok.
  • Vis forfatter(e) 1996. Plasmid diversity in Icelandic hot springs.
  • Vis forfatter(e) 1993. Gene-transfer in marine sediments.
  • Vis forfatter(e) 1993. Gene transfer between bacteria in marine sediments.
  • Vis forfatter(e) 1993. Antibiotika-resistens i oppdrettsanlegg. Hvor kommer den fra - hvordan kan den spres?
  • Vis forfatter(e) 1993. Antibiotika resistens i oppdrettsanlegg.
Vitenskapelig foredrag
  • Vis forfatter(e) 2021. Algal virus infection strategies and their effect on host diversity .
  • Vis forfatter(e) 2020. Diversity in marine virus-host relationships and their effect of phytoplankton community structure. .
  • Vis forfatter(e) 2019. Friends or foes, strategies for stable co-existance in algel viruses infecting haptophytes.
  • Vis forfatter(e) 2018. Reluctant affairs-algal virus-haptophyte relationship in the Ocean. .
  • Vis forfatter(e) 2018. Diversity of marine prymnesioviruses and their strategies for stable co-existence with their phytoplankton hosts.
  • Vis forfatter(e) 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.
  • Vis forfatter(e) 2017. Synechococcus in the Arctic Ocean.
  • Vis forfatter(e) 2017. Microbial Food web structure in a changing Arctic.
  • Vis forfatter(e) 2017. Marine viruses, small but important.
  • Vis forfatter(e) 2017. Marine viruses small but ecologically important.
  • Vis forfatter(e) 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 .
  • Vis forfatter(e) 2016. Role of appendicularians in aquatic viral ecology: particle trapping, ingestion and consequences for the marine microbial food web.
  • Vis forfatter(e) 2016. Marine Viruses, small but major players in the ocean ecosystem.
  • Vis forfatter(e) 2016. Marine Viruses are small but important.
  • Vis forfatter(e) 2016. Development of a semi-automated method for metagenomic characterization of total virus assemblages from seasonal high-latitude seawater samples.
  • Vis forfatter(e) 2015. Diversity, seasonal dynamics and biotic interactions in marine phytoplankton and virus communities.
  • Vis forfatter(e) 2015. Diversity and seasonal dynamics of marine haptophytes and their viruses and the role of biotic interactions.
  • Vis forfatter(e) 2014. Diversity and seasonal dynamics of marine haptophytes and their viruses.
  • Vis forfatter(e) 2013. Diversity and dynamics of marine haptophytes and their viruses.
  • Vis forfatter(e) 2012. Viruses, a controlling force on prokaryotic diversity?
  • Vis forfatter(e) 2012. Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing.
  • Vis forfatter(e) 2012. Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing.
  • Vis forfatter(e) 2011. Geographic segregation and mechanisms of genetic evolution between coccolithovirus populations: a genomic study.
  • Vis forfatter(e) 2010. Host-viruses interactions in blooming and non-blooming haptophytes.
  • Vis forfatter(e) 2009. Live and let die: Molecular methods for studying host-virus interactions using Chrysochromulina ericina and CeV-01B as a model system.
  • Vis forfatter(e) 2008. Increased level of CO2 in the ecosphere may modify the structure of marine plankton.
  • Vis forfatter(e) 2007. Total numbers and activity of environmental airborne bacteria.
  • Vis forfatter(e) 2007. Burden or Benefit- virus-host interactions in the marine environment.
  • Vis forfatter(e) 2006. Viral community analysis.
  • Vis forfatter(e) 2005. Viral diversity in the marine environment. Effect on the species richness and activity of planktonic organisms.
  • Vis forfatter(e) 2005. VIRAL DIVERSITY IN THE MARINE ENVIRONMENT. EFFECT ON THE SPECIES RICHNESS OF PLANKTONIC ORGANISMS.
  • Vis forfatter(e) 2005. Are colonies or colonial cells of Phaeocystis pouchetii (prymnesiophyceae) susceptible to virus infection?
  • Vis forfatter(e) 2004. Viral diversity in solar saltern.
  • Vis forfatter(e) 2003. CHARACTERISATION OF BACTERIAL COMMUNITIES ASSOCIATED WITH EARLY LIFE STAGES OF CULTURED GREAT SCALLOP (PECTEN MAXIMUS), USING DENATURING GRADIENT GEL ELECTROPHORESIS (DGGE).
  • Vis forfatter(e) 2002. Marine phytoplankton viruses - ecology, physiology and host virus interactions.
  • Vis forfatter(e) 2002. Marine Phytoplankton Viruses-Ecology, Physiology and Host Virus Interactions.
  • Vis forfatter(e) 2001. The discovery of a novel algal virus type infecxtion of the phytoplankter Micromonas pusilla by a double stranded RNA reovirus.
  • Vis forfatter(e) 2000. Population dynamics in the virioplankton community during marine algal blooms.
  • Vis forfatter(e) 2000. Isolation and characterization of two marine viruses infecting Chrysochromulina ericina and Pyramimonas orientalis.
  • Vis forfatter(e) 2000. Infection of Micromonas pusilla (Prasinophyceae) by a dsRNA virus.
  • Vis forfatter(e) 2000. Diversity and succession of algae, virus and bacteria in nutrient enriched seawater enclosures.
  • Vis forfatter(e) 2000. Bacterial population dynamics and diversity after viral lysis of three different algal species.
  • Vis forfatter(e) 1998. Transfer of the naturally occuring plasmid pRAS1 affects the microbiological diversity in marine sediments [poster].
  • Vis forfatter(e) 1998. Transfer of the naturally occuring plasmid pRAS1 affects the microbialdiversity in marine sediments.
  • Vis forfatter(e) 1998. Spread of the plasmid pRAS1 in sea water and marine sediment - characterization of recipients [poster].
  • Vis forfatter(e) 1998. Changes im the microbiological community structure and diversity in metal contaminated soils.
  • Vis forfatter(e) 1998. Bacterial activity and diversity measured by differential-PCR.
  • Vis forfatter(e) 1997. Novel techniques for analysing microbial diversity in natural and perturbed environments.
  • Vis forfatter(e) 1997. Monitoring environmental impact of antropogenic activity on microbial communities.
  • Vis forfatter(e) 1996. Molecular methods for investigating changes in microbial communities.
  • Vis forfatter(e) 1996. Effect of heavy metal contamination on the microbial community structure in soil.
  • Vis forfatter(e) 1996. Changes in the microbial diversity in soil due to heavy metal contamination.
Short communication
  • Vis forfatter(e) 2015. The 474-kilobase-pair complete genome sequence of CeV-01B, a virus infecting Haptolina (Chrysochromulina) ericina (Prymnesiophyceae). Microbiology Resource Announcements (MRA). 1-2.
Mastergradsoppgave
  • Vis forfatter(e) 2006. DNA characterization and phylogenetic analyses on species of pelagic Crustacea from the Mid-Atlantic ridge.
Populærvitenskapelig artikkel
  • Vis forfatter(e) 2004. Produksjon av kamskjellyngel. Vekk med antibiotika og opp med overlevelsen. Norsk Fiskeoppdrett. 59-61.
  • Vis forfatter(e) 2003. Vennlige Virus. Bergens Tidende.
Doktorgradsavhandling
  • Vis forfatter(e) 2016. Bacterial, archaeal and viral community structure in a deep Norwegian fjord.
  • Vis forfatter(e) 2010. Microbial ecology in the early life stages of intensively reared marine species.
  • Vis forfatter(e) 1994. Conjugal transfer of antibiotic resistance genes in marine sediments.
Intervju
  • Vis forfatter(e) 2004. Maneter, virus og bakterier.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vis forfatter(e) 2010. Fingerprinting aquatic virus communities. 10 sider.
  • Vis forfatter(e) 2000. Molecular biology and genetic diversity of microorganisms. 15 sider.
Leksikonartikkel
  • Vis forfatter(e) 2009. Viral pool, environmental. 553-567. I:
    • Vis forfatter(e) 2009. Encyclopedia of microbiology, volume 3. Elsevier.
Poster
  • Vis forfatter(e) 2020. Enzyme discovery from the edge of (sequence) space.
  • Vis forfatter(e) 2020. Bringing deep-sea enzymes to light.
  • Vis forfatter(e) 2017. Diversity of novel viruses infecting haptophytes.
  • Vis forfatter(e) 2016. RNA-Seq analysis of host and viral gene expression highlights the interaction between Prymnesium kappa and the virus HeV-RF02.
  • Vis forfatter(e) 2016. Marine viral diversity in the Arctic - from surface to deep waters through the long polar night and day.
  • Vis forfatter(e) 2014. Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data.
  • Vis forfatter(e) 2012. Diversity and seasonal dynamics of haptophytes in outer Oslofjorden revealed by 454 pyrosequencing.
  • Vis forfatter(e) 2011. Virus resistance in marine phytoplankton - a status update.
  • Vis forfatter(e) 2011. Virus resistance in eukariotic marine phytoplankton - a status update.
  • Vis forfatter(e) 2011. Pelagiske virus i Kongsfjord.
  • Vis forfatter(e) 2010. Host-viruses interactions in blooming and non-blooming haptophytes.
  • Vis forfatter(e) 2005. Mg2+ plays an important role in marine bacteria.
  • Vis forfatter(e) 2004. Microbial biodiversity control.
  • Vis forfatter(e) 2003. Inlet water flown over a biofilm with probiotic bacteria-a possible strategy to increase survival of scallop larvae?
  • Vis forfatter(e) 2000. A method for diversity analysis of viruses in small volumes of seawater.
  • Vis forfatter(e) 1999. Virus i Havet.
  • Vis forfatter(e) 1993. Transfer of a broad host range plasmid from Aeromonas salmonicida to bacteria indigenous to the marine environment.
  • Vis forfatter(e) 1993. In situ transfer in the marine environment of a broad host range plasmid indigenious to Aeromonas salmonicida.
Vitenskapelig oversiktsartikkel/review
  • Vis forfatter(e) 2021. Going to extremes - A metagenomic journey into the dark matter of life. FEMS Microbiology Letters. 1-16.
  • Vis forfatter(e) 2020. Fungi and viruses as important players in microbial mats. FEMS Microbiology Ecology. 1-13.
  • Vis forfatter(e) 2018. Simple models combining competition, defence and resource availability have broad implications in pelagic microbial food webs. Ecology Letters. 1440-1452.

Se fullstendig 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

  • Micropolar
  • Microbial network organisation (MINOS)
  • Diversity and dynamics of marine Haptophytes (HAPTODIV)

Molecular Microbial ecology.

Forskergrupper