Ulfar Bergthorsson

3.1k total citations
36 papers, 2.1k citations indexed

About

Ulfar Bergthorsson is a scholar working on Molecular Biology, Genetics and Aging. According to data from OpenAlex, Ulfar Bergthorsson has authored 36 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Molecular Biology, 22 papers in Genetics and 12 papers in Aging. Recurrent topics in Ulfar Bergthorsson's work include Evolution and Genetic Dynamics (19 papers), Genetics, Aging, and Longevity in Model Organisms (12 papers) and CRISPR and Genetic Engineering (10 papers). Ulfar Bergthorsson is often cited by papers focused on Evolution and Genetic Dynamics (19 papers), Genetics, Aging, and Longevity in Model Organisms (12 papers) and CRISPR and Genetic Engineering (10 papers). Ulfar Bergthorsson collaborates with scholars based in United States, Sweden and United Kingdom. Ulfar Bergthorsson's co-authors include Vaishali Katju, John R. Roth, Jeffrey D. Palmer, Dan I. Andersson, Howard Ochman, Brendan Thomason, Keith L. Adams, H Ochman, E. Susan Slechta and Aaron O. Richardson and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Current Biology.

In The Last Decade

Ulfar Bergthorsson

35 papers receiving 2.0k citations

Peers

Ulfar Bergthorsson
Christian M. Zmasek United States
Ryszard Korona Poland
Tim F. Cooper United States
Anthony L. Shiver United States
Kui Lin China
Kristina Smith United States
Lilach Hadany Israel
Clifford Zeyl United States
Sujai Kumar United Kingdom
Zachary D. Blount United States
Christian M. Zmasek United States
Ulfar Bergthorsson
Citations per year, relative to Ulfar Bergthorsson Ulfar Bergthorsson (= 1×) peers Christian M. Zmasek

Countries citing papers authored by Ulfar Bergthorsson

Since Specialization
Citations

This map shows the geographic impact of Ulfar Bergthorsson's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ulfar Bergthorsson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ulfar Bergthorsson more than expected).

Fields of papers citing papers by Ulfar Bergthorsson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ulfar Bergthorsson. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ulfar Bergthorsson. The network helps show where Ulfar Bergthorsson may publish in the future.

Co-authorship network of co-authors of Ulfar Bergthorsson

This figure shows the co-authorship network connecting the top 25 collaborators of Ulfar Bergthorsson. A scholar is included among the top collaborators of Ulfar Bergthorsson based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ulfar Bergthorsson. Ulfar Bergthorsson is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Bergthorsson, Ulfar, et al.. (2022). Bergerac strains of Caenorhabditis elegans revisited: expansion of Tc 1 elements imposes a significant genomic and fitness cost. G3 Genes Genomes Genetics. 12(11). 4 indexed citations
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Bergthorsson, Ulfar, Caroline J. Sheeba, Anke Konrad, et al.. (2020). Long-term experimental evolution reveals purifying selection on piRNA-mediated control of transposable element expression. BMC Biology. 18(1). 162–162. 7 indexed citations
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Konrad, Anke, Stéphane Flibotte, Jon Taylor, et al.. (2018). Mutational and transcriptional landscape of spontaneous gene duplications and deletions in Caenorhabditis elegans. Proceedings of the National Academy of Sciences. 115(28). 7386–7391. 40 indexed citations
7.
Konrad, Anke, Owen Thompson, R Waterston, et al.. (2017). Mitochondrial Mutation Rate, Spectrum and Heteroplasmy in Caenorhabditis elegans Spontaneous Mutation Accumulation Lines of Differing Population Size. Molecular Biology and Evolution. 34(6). msx051–msx051. 44 indexed citations
8.
Edgley, Mark L., Jon Taylor, Stéphane Flibotte, et al.. (2015). Rapid Increase in frequency of gene copy-number variants during experimental evolution in Caenorhabditis elegans. BMC Genomics. 16(1). 1044–1044. 30 indexed citations
9.
Katju, Vaishali, et al.. (2014). Fitness decline in spontaneous mutation accumulation lines of Caenorhabditis elegans with varying effective population sizes. Evolution. 69(1). 104–116. 32 indexed citations
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Bergthorsson, Ulfar, et al.. (2014). Physella acuta: atypical mitochondrial gene order among panpulmonates (Gastropoda). Journal of Molluscan Studies. 80(4). 388–399. 24 indexed citations
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Katju, Vaishali & Ulfar Bergthorsson. (2013). Copy-number changes in evolution: rates, fitness effects and adaptive significance. Frontiers in Genetics. 4. 273–273. 113 indexed citations
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Fitzpatrick, Kelly A., et al.. (2011). High Spontaneous Rate of Gene Duplication in Caenorhabditis elegans. Current Biology. 21(4). 306–310. 91 indexed citations
13.
Bu, Lijing, Ulfar Bergthorsson, & Vaishali Katju. (2011). Local synteny and codon usage contribute to asymmetric sequence divergence of Saccharomyces cerevisiaegene duplicates. BMC Evolutionary Biology. 11(1). 279–279. 5 indexed citations
14.
Katju, Vaishali, et al.. (2009). Variation in gene duplicates with low synonymous divergence in Saccharomyces cerevisiae relative to Caenorhabditis elegans. Genome biology. 10(7). R75–R75. 12 indexed citations
15.
Nekola, Jeffrey C., Brian Coles, & Ulfar Bergthorsson. (2009). Evolutionary pattern and process within the Vertigo gouldii (Mollusca: Pulmonata, Pupillidae) group of minute North American land snails. Molecular Phylogenetics and Evolution. 53(3). 1010–1024. 41 indexed citations
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Bergthorsson, Ulfar, Dan I. Andersson, & John R. Roth. (2007). Ohno's dilemma: Evolution of new genes under continuous selection. Proceedings of the National Academy of Sciences. 104(43). 17004–17009. 278 indexed citations
17.
Bergthorsson, Ulfar, Aaron O. Richardson, Gregory J. Young, Leslie R. Goertzen, & Jeffrey D. Palmer. (2004). Massive horizontal transfer of mitochondrial genes from diverse land plant donors to the basal angiosperm Amborella. Proceedings of the National Academy of Sciences. 101(51). 17747–17752. 177 indexed citations
18.
Bergthorsson, Ulfar, Keith L. Adams, Brendan Thomason, & Jeffrey D. Palmer. (2003). Widespread horizontal transfer of mitochondrial genes in flowering plants. Nature. 424(6945). 197–201. 371 indexed citations
19.
Hendrickson, Heather, E. Susan Slechta, Ulfar Bergthorsson, Dan I. Andersson, & John R. Roth. (2002). Amplification–mutagenesis: Evidence that “directed” adaptive mutation and general hypermutability result from growth with a selected gene amplification. Proceedings of the National Academy of Sciences. 99(4). 2164–2169. 134 indexed citations
20.
Bergthorsson, Ulfar & Howard Ochman. (1998). Distribution of chromosome length variation in natural isolates of Escherichia coli. Molecular Biology and Evolution. 15(1). 6–16. 171 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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