John L. Armstrong

1.2k total citations
17 papers, 958 citations indexed

About

John L. Armstrong is a scholar working on Plant Science, Molecular Biology and Pollution. According to data from OpenAlex, John L. Armstrong has authored 17 papers receiving a total of 958 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Plant Science, 4 papers in Molecular Biology and 4 papers in Pollution. Recurrent topics in John L. Armstrong's work include Environmental DNA in Biodiversity Studies (3 papers), Pharmaceutical and Antibiotic Environmental Impacts (3 papers) and Antibiotic Resistance in Bacteria (2 papers). John L. Armstrong is often cited by papers focused on Environmental DNA in Biodiversity Studies (3 papers), Pharmaceutical and Antibiotic Environmental Impacts (3 papers) and Antibiotic Resistance in Bacteria (2 papers). John L. Armstrong collaborates with scholars based in United States, Ghana and New Zealand. John L. Armstrong's co-authors include Ramon J. Seidler, Jon J. Calomiris, L. Arlene Porteous, George F Rohrmann, G.S. Beaudreau, Kirby D. Smith, Brian J. McCarthy, Lidia S. Watrud, Gitte M. Knudsen and Michael V. Walter and has published in prestigious journals such as Applied and Environmental Microbiology, Journal of Bacteriology and Plant and Soil.

In The Last Decade

John L. Armstrong

17 papers receiving 841 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John L. Armstrong United States 13 383 305 218 213 162 17 958
David Drissner Switzerland 16 292 0.8× 422 1.4× 162 0.7× 415 1.9× 97 0.6× 37 1.3k
Laura M. M. Ottoboni Brazil 21 323 0.8× 148 0.5× 274 1.3× 373 1.8× 78 0.5× 51 1.4k
Atsushi Yamazoe Japan 19 716 1.9× 433 1.4× 405 1.9× 274 1.3× 166 1.0× 68 1.4k
Erol Çapkın Türkiye 20 170 0.4× 326 1.1× 172 0.8× 149 0.7× 425 2.6× 35 1.2k
Makoto Urai Japan 17 350 0.9× 130 0.4× 138 0.6× 123 0.6× 73 0.5× 41 920
Leise Riber Denmark 19 640 1.7× 510 1.7× 398 1.8× 108 0.5× 97 0.6× 39 1.3k
Ellen Krögerrecklenfort Germany 11 220 0.6× 531 1.7× 302 1.4× 145 0.7× 80 0.5× 13 848
A. C. Wolters Netherlands 11 299 0.8× 203 0.7× 393 1.8× 289 1.4× 74 0.5× 13 793
Daniëlle Janssens Belgium 14 657 1.7× 73 0.2× 331 1.5× 489 2.3× 81 0.5× 19 1.4k
Jae-Seong So South Korea 20 480 1.3× 148 0.5× 147 0.7× 211 1.0× 103 0.6× 83 1.2k

Countries citing papers authored by John L. Armstrong

Since Specialization
Citations

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

Fields of papers citing papers by John L. Armstrong

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John L. Armstrong. 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 John L. Armstrong. The network helps show where John L. Armstrong may publish in the future.

Co-authorship network of co-authors of John L. Armstrong

This figure shows the co-authorship network connecting the top 25 collaborators of John L. Armstrong. A scholar is included among the top collaborators of John L. Armstrong 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 John L. Armstrong. John L. Armstrong is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

17 of 17 papers shown
1.
Taylor, Robert K., et al.. (2003). Effect of inoculum dose on infection of apple ( Malus domestica ) flowers by Erwinia amylovora. New Zealand Journal of Crop and Horticultural Science. 31(4). 325–333. 12 indexed citations
2.
Jackson, T.A., et al.. (2002). Abundance and distribution of microbial populations in sheep fleece. New Zealand Journal of Agricultural Research. 45(1). 49–55. 10 indexed citations
3.
Porteous, L. Arlene, John L. Armstrong, Ramon J. Seidler, & Lidia S. Watrud. (1994). An effective method to extract DNA from environmental samples for polymerase chain reaction amplification and DNA fingerprint analysis. Current Microbiology. 29(5). 301–307. 76 indexed citations
4.
Porteous, L. Arlene & John L. Armstrong. (1993). A simple mini-method to extract DNA directly from soil for use with polymerase chain reaction amplification. Current Microbiology. 27(2). 115–118. 29 indexed citations
5.
Armstrong, John L.. (1993). Biased DNA Integration inColletotrichum gloeosporioidesf. sp.aeschynomeneTransformants with Benomyl Resistance. Phytopathology. 83(3). 328–328. 4 indexed citations
6.
Porteous, L. Arlene & John L. Armstrong. (1991). Recovery of bulk DNA from soil by a rapid, small-scale extraction method. Current Microbiology. 22(6). 345–348. 83 indexed citations
7.
Walter, Michael V., et al.. (1991). Formation of transconjugants on plating media following in situ conjugation experiments. Canadian Journal of Microbiology. 37(9). 703–707. 6 indexed citations
8.
Armstrong, John L., et al.. (1990). Transconjugation between Bacteria in the Digestive Tract of the Cutworm Peridroma saucia. Applied and Environmental Microbiology. 56(5). 1492–1493. 27 indexed citations
9.
Armstrong, John L., et al.. (1989). The cutworm Peridroma saucia (Lepidoptera: Noctuidae) supports growth and transport of pBR322-bearing bacteria. Applied and Environmental Microbiology. 55(9). 2200–2205. 19 indexed citations
10.
Armstrong, John L., et al.. (1989). Restriction fragment length polymorphisms distinguish ectomycorrhizal fungi. Plant and Soil. 116(1). 1–7. 31 indexed citations
11.
Knudsen, Gitte M., et al.. (1988). Predictive model of conjugative plasmid transfer in the rhizosphere and phyllosphere. Applied and Environmental Microbiology. 54(2). 343–347. 53 indexed citations
12.
Armstrong, John L., Gitte M. Knudsen, & Ramon J. Seidler. (1987). Microcosm method to assess survival of recombinant bacteria associated with plants and herbivorous insects. Current Microbiology. 15(4). 229–232. 30 indexed citations
13.
Armstrong, John L., George F Rohrmann, & G.S. Beaudreau. (1985). Delta endotoxin of Bacillus thuringiensis subsp. israelensis. Journal of Bacteriology. 161(1). 39–46. 90 indexed citations
14.
Calomiris, Jon J., John L. Armstrong, & Ramon J. Seidler. (1984). Association of metal tolerance with multiple antibiotic resistance of bacteria isolated from drinking water. Applied and Environmental Microbiology. 47(6). 1238–1242. 189 indexed citations
15.
Armstrong, John L., Jon J. Calomiris, & Ramon J. Seidler. (1982). Selection of antibiotic-resistant standard plate count bacteria during water treatment. Applied and Environmental Microbiology. 44(2). 308–316. 97 indexed citations
16.
Armstrong, John L., et al.. (1981). Antibiotic-resistant bacteria in drinking water. Applied and Environmental Microbiology. 42(2). 277–283. 129 indexed citations
17.
Smith, Kirby D., John L. Armstrong, & Brian J. McCarthy. (1967). The introduction of radioisotopes into RNA by methylation in vitro. Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis. 142(2). 323–330. 73 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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