Barry K. Chelm

2.0k total citations
29 papers, 1.5k citations indexed

About

Barry K. Chelm is a scholar working on Molecular Biology, Plant Science and Ecology. According to data from OpenAlex, Barry K. Chelm has authored 29 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Molecular Biology, 14 papers in Plant Science and 11 papers in Ecology. Recurrent topics in Barry K. Chelm's work include Legume Nitrogen Fixing Symbiosis (14 papers), Plant nutrient uptake and metabolism (9 papers) and Microbial Community Ecology and Physiology (7 papers). Barry K. Chelm is often cited by papers focused on Legume Nitrogen Fixing Symbiosis (14 papers), Plant nutrient uptake and metabolism (9 papers) and Microbial Community Ecology and Physiology (7 papers). Barry K. Chelm collaborates with scholars based in United States. Barry K. Chelm's co-authors include Richard B. Hallick, Janet Jansson, William E. Holben, James M. Tiedje, Mary Lou Guerinot, Patrick W. Gray, Emil M. Orozco, Gregory B. Martin, E. Peter Geiduschek and Elizabeth Verkamp and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

Barry K. Chelm

29 papers receiving 1.4k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Barry K. Chelm United States 18 924 528 482 225 183 29 1.5k
Beate Rückert Germany 8 1.1k 1.2× 303 0.6× 446 0.9× 740 3.3× 188 1.0× 9 1.6k
L. U. Rigo Brazil 21 585 0.6× 732 1.4× 207 0.4× 165 0.7× 185 1.0× 50 1.4k
Francine Casse France 16 500 0.5× 806 1.5× 161 0.3× 197 0.9× 110 0.6× 28 1.3k
P. Boistard France 21 419 0.5× 1.3k 2.5× 253 0.5× 185 0.8× 212 1.2× 26 1.7k
William J. Buikema United States 18 1.4k 1.5× 747 1.4× 827 1.7× 310 1.4× 127 0.7× 19 2.6k
Yasuhiro Kasahara Japan 20 563 0.6× 243 0.5× 386 0.8× 336 1.5× 105 0.6× 47 1.1k
Maria Berenice Reynaud Steffens Brazil 20 508 0.5× 634 1.2× 157 0.3× 123 0.5× 168 0.9× 62 1.3k
Jean-Marie Aubert France 24 1.5k 1.6× 662 1.3× 623 1.3× 913 4.1× 86 0.5× 52 2.8k
Jaime Mora Mexico 25 530 0.6× 1.1k 2.1× 187 0.4× 65 0.3× 170 0.9× 52 1.6k
Frank Cannon United Kingdom 24 1.0k 1.1× 970 1.8× 333 0.7× 494 2.2× 386 2.1× 41 2.1k

Countries citing papers authored by Barry K. Chelm

Since Specialization
Citations

This map shows the geographic impact of Barry K. Chelm'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 Barry K. Chelm with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Barry K. Chelm more than expected).

Fields of papers citing papers by Barry K. Chelm

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Barry K. Chelm. 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 Barry K. Chelm. The network helps show where Barry K. Chelm may publish in the future.

Co-authorship network of co-authors of Barry K. Chelm

This figure shows the co-authorship network connecting the top 25 collaborators of Barry K. Chelm. A scholar is included among the top collaborators of Barry K. Chelm 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 Barry K. Chelm. Barry K. Chelm 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
1.
Scott‐Craig, John S., Mary Lou Guerinot, & Barry K. Chelm. (1991). Isolation of Bradyrhizobium japonicum DNA sequences that are transcribed at high levels in bacteroids. Molecular and General Genetics MGG. 228(3). 356–360. 14 indexed citations
2.
Martin, Gregory B., Michael F. Thomashow, & Barry K. Chelm. (1989). Bradyrhizobium japonicum glnB, a putative nitrogen-regulatory gene, is regulated by NtrC at tandem promoters. Journal of Bacteriology. 171(10). 5638–5645. 47 indexed citations
3.
Adams, Thomas H. & Barry K. Chelm. (1988). Effects of Oxygen Levels on the Transcription of nif and gln Genes in Bradyrhizobium japonicum. Microbiology. 134(3). 611–618. 21 indexed citations
4.
Holben, William E., Janet Jansson, Barry K. Chelm, & James M. Tiedje. (1988). DNA Probe Method for the Detection of Specific Microorganisms in the Soil Bacterial Community. Applied and Environmental Microbiology. 54(3). 703–711. 407 indexed citations
5.
Martin, Gregory B., Kenneth A. Chapman, & Barry K. Chelm. (1988). Role of the Bradyrhizobium japonicum ntrC gene product in differential regulation of the glutamine synthetase II gene (glnII). Journal of Bacteriology. 170(12). 5452–5459. 53 indexed citations
6.
McClung, C. Robertson & Barry K. Chelm. (1987). A genetic locus essential for formate-dependent growth of Bradyrhizobium japonicum. Journal of Bacteriology. 169(7). 3260–3267. 10 indexed citations
7.
Chelm, Barry K., et al.. (1986). Apparent eukaryotic origin of glutamine synthetase II from the bacterium Bradyrhizobium japonicum. Nature. 322(6079). 568–570. 111 indexed citations
8.
Guerinot, Mary Lou, et al.. (1985). Characterization of the gene encoding glutamine synthetase I (glnA) from Bradyrhizobium japonicum. Journal of Bacteriology. 162(2). 698–703. 44 indexed citations
9.
Adams, Thomas H., C. Robertson McClung, & Barry K. Chelm. (1984). Physical organization of the Bradyrhizobium japonicum nitrogenase gene region. Journal of Bacteriology. 159(3). 857–862. 41 indexed citations
10.
Chelm, Barry K., John Duffy, & E. Peter Geiduschek. (1982). Interaction of Bacillus subtilis RNA polymerase core with two specificity-determining subunits. Competition between sigma and the SPO1 gene 28 protein.. Journal of Biological Chemistry. 257(11). 6501–6508. 15 indexed citations
11.
Chelm, Barry K., Joseph M. Romeo, S. Brennan, & E. Peter Geiduschek. (1981). A transcriptional map of the bacteriophage SPO1 genome. Virology. 112(2). 572–588. 25 indexed citations
12.
Romeo, Joseph M., S. Brennan, Barry K. Chelm, & E. Peter Geiduschek. (1981). A transcriptional map of the bacteriophage SP01 genome I. The major early promoters. Virology. 111(2). 588–603. 17 indexed citations
13.
Brennan, S., Barry K. Chelm, Joseph M. Romeo, & E. Peter Geiduschek. (1981). A transcriptional map of the bacteriophage SP01 genome: II. The major early transcription units. Virology. 111(2). 604–628. 14 indexed citations
14.
Chelm, Barry K., Caroline Beard, & E. Peter Geiduschek. (1981). Changes in the association between Bacillus subtilis RNA polymerase core and two specificity-determining subunits during transcription. Biochemistry. 20(23). 6564–6569. 7 indexed citations
15.
Chelm, Barry K., Richard B. Hallick, & Patrick W. Gray. (1979). Transcription program of the chloroplast genome of Euglena gracilis during chloroplast development. Proceedings of the National Academy of Sciences. 76(5). 2258–2262. 24 indexed citations
16.
Chelm, Barry K., Patrick W. Gray, & Richard B. Hallick. (1978). Mapping of transcribed regions of Euglena gracilis chloroplast DNA. Biochemistry. 17(20). 4239–4244. 12 indexed citations
17.
Chelm, Barry K., P Hoben, & Richard B. Hallick. (1977). Expression of the chloroplast ribosomal RNA genes of Euglena gracilis during chloroplast development. Biochemistry. 16(4). 776–781. 18 indexed citations
18.
Hallick, Richard B., Barry K. Chelm, Patrick W. Gray, & Emil M. Orozco. (1977). Use of aurintricarboxylic acid as an inhibitor of nucleases during nucleic acid isolation. Nucleic Acids Research. 4(9). 3055–3064. 249 indexed citations
19.
Chelm, Barry K., P Hoben, & Richard B. Hallick. (1977). Cellular content of chloroplast DNA and chloroplast ribosomal RNA genes in Euglena gracilis during chloroplast development. Biochemistry. 16(4). 782–786. 26 indexed citations
20.
Chelm, Barry K. & Richard B. Hallick. (1976). Changes in the expression of the chloroplast genome of Euglena gracilis during chloroplast development. Biochemistry. 15(3). 593–599. 52 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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