Keith A. Johnson

3.7k total citations · 1 hit paper
48 papers, 1.7k citations indexed

About

Keith A. Johnson is a scholar working on Molecular Biology, Plant Science and Immunology. According to data from OpenAlex, Keith A. Johnson has authored 48 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Molecular Biology, 9 papers in Plant Science and 7 papers in Immunology. Recurrent topics in Keith A. Johnson's work include Aquaculture disease management and microbiota (7 papers), Myxozoan Parasites in Aquatic Species (6 papers) and Plant Molecular Biology Research (6 papers). Keith A. Johnson is often cited by papers focused on Aquaculture disease management and microbiota (7 papers), Myxozoan Parasites in Aquatic Species (6 papers) and Plant Molecular Biology Research (6 papers). Keith A. Johnson collaborates with scholars based in United States, Canada and Netherlands. Keith A. Johnson's co-authors include Benjamin D. Aronson, Jay Dunlap, Jennifer Loros, Janet Braam, Marilyn Albert, Diana H. Polisensky, Melissa L. Sistrunk, Nikkí A. Delk, Naweed I. Chowdhury and Danuta Maria Antosiewicz and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and PLANT PHYSIOLOGY.

In The Last Decade

Keith A. Johnson

46 papers receiving 1.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Negative Feedback Defining a Circadian Clock: Autoregulation of the Clock Gene frequency

1994 500 citations Benjamin D. Aronson, Keith A. Johnson et al. Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keith A. Johnson United States	18	859	537	424	245	203	48	1.7k
Kevin Keegan United States	21	483 0.6×	736 1.4×	896 2.1×	737 3.0×	90 0.4×	24	2.5k
Xi Wu China	23	452 0.5×	123 0.2×	1.7k 3.9×	135 0.6×	145 0.7×	85	2.5k
Carl D. Johnson United States	20	423 0.5×	326 0.6×	973 2.3×	491 2.0×	128 0.6×	23	2.4k
Elke Clynen Belgium	31	172 0.2×	215 0.4×	1.1k 2.5×	1.1k 4.7×	212 1.0×	73	2.5k
Peter J. Roy Canada	24	199 0.2×	273 0.5×	1.1k 2.6×	352 1.4×	77 0.4×	51	2.4k
R. Elwyn Isaac United Kingdom	30	178 0.2×	187 0.3×	933 2.2×	1.3k 5.2×	317 1.6×	83	2.7k
Richard Komuniecki United States	26	141 0.2×	620 1.2×	616 1.5×	318 1.3×	36 0.2×	83	2.1k
Roland J. Bainton United States	22	247 0.3×	236 0.4×	1.1k 2.6×	1.3k 5.5×	307 1.5×	30	2.5k
Alan K. Chang China	23	289 0.3×	94 0.2×	1.0k 2.4×	119 0.5×	112 0.6×	84	1.9k
Angela Relógio Germany	25	280 0.3×	1.1k 2.0×	676 1.6×	183 0.7×	160 0.8×	61	2.0k

Countries citing papers authored by Keith A. Johnson

Since Specialization

Citations

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

Fields of papers citing papers by Keith A. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keith A. Johnson. 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 Keith A. Johnson. The network helps show where Keith A. Johnson may publish in the future.

Co-authorship network of co-authors of Keith A. Johnson

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

All Works

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20 of 20 papers shown

Ezzati, Ali, Richard Lipton, Reisa Sperling, et al.. (2025). Assessing Stages of Objective Memory Impairment and neuroimaging as risk factors of incident cognitive impairment. Journal of the International Neuropsychological Society. 31(7-8). 490–498.

Langford, Oliver, Rema Raman, Paul Aisen, et al.. (2024). Relationship between Plasma P-Tau217 and Amyloid PET in Racial and Ethnic Underrepresented Groups (RE-URG) Compared with Non RE-URG in LEARN and A4. The Journal of Prevention of Alzheimer s Disease. 11(4). 831–837. 5 indexed citations

Jutten, Roos J., Rebecca E. Amariglio, Paul Maruff, et al.. (2023). Increased intraindividual variability in reaction time performance is associated with emerging cognitive decline in cognitively unimpaired adults.. Neuropsychology. 38(2). 184–197. 9 indexed citations

Johnson, Keith A., et al.. (2020). Antibacterial and hemolytic properties of acrylate-based random ternary copolymers comprised of same center cationic, ethyl and poly(oligoethylene glycol) side chains. European Polymer Journal. 132. 109757–109757. 3 indexed citations

Johnson, Keith A., et al.. (2018). Co-Selection of Mercury- and Antibiotic-Resistance in Hatchery-Reared Salmonids. 2(1). 1 indexed citations

Meredith, Matthew M., Erin M. Parry, Nicholas O. Markham, et al.. (2012). Concomitant Antibiotic and Mercury Resistance Among Gastrointestinal Microflora of Feral Brook Trout, Salvelinus fontinalis. Current Microbiology. 65(5). 575–582. 5 indexed citations

McIntosh, Douglas, Frank A. Fekete, Erin M. Parry, et al.. (2008). Transferable, multiple antibiotic and mercury resistance in Atlantic Canadian isolates of Aeromonas salmonicida subsp. salmonicida is associated with carriage of an IncA/C plasmid similar to the Salmonella enterica plasmid pSN254. Journal of Antimicrobial Chemotherapy. 61(6). 1221–1228. 137 indexed citations

Campbell, Matthew R., et al.. (2008). A New Species of Myxozoan (Myxosporea) from the Brain and Spinal Cord of Rainbow Trout (Oncorhynchus mykiss) from Idaho. Journal of Parasitology. 94(1). 218–222. 17 indexed citations

Campbell, Matthew R., et al.. (2008). Redescription and molecular characterization of Myxobolus kisutchi Yasutake & Wood, 1957. Journal of Fish Diseases. 31(9). 707–712. 7 indexed citations

10.

Dunlap, Jay, Jennifer Loros, Benjamin D. Aronson, et al.. (2007). The Genetic Basis of the Circadian Clock: Identification of frq and FRQ as Clock Components in Neurospora. Novartis Foundation symposium. 183. 3–25. 2 indexed citations

11.

Powell, Madison S., et al.. (2005). Detection of Renibacterium salmoninarum in chinook salmon, Oncorhynchus tshawytscha (Walbaum), using quantitative PCR. Journal of Fish Diseases. 28(10). 615–622. 29 indexed citations

12.

Johnson, Keith A. & Marilyn Albert. (2000). Perfusion abnormalities in prodromal AD. Neurobiology of Aging. 21(2). 289–292. 90 indexed citations

13.

Johnson, Keith A., Melissa L. Sistrunk, Diana H. Polisensky, & Janet Braam. (1998). Arabidopsis thalianaResponses to Mechanical Stimulation Do Not Require ETR1 or EIN21. PLANT PHYSIOLOGY. 116(2). 643–649. 87 indexed citations

14.

Braam, Janet, Melissa L. Sistrunk, Diana H. Polisensky, et al.. (1997). Plant responses to environmental stress: regulation and functions of the ArabidopsisTCH genes. Planta. 203(S1). S35–S41. 79 indexed citations

15.

Cho, Moo Hwan, et al.. (1995). Drug transport across nylon 610 films: influence of synthesis variables.. Pharmaceutical Research. 12(2). 248–256. 4 indexed citations

16.

Aronson, Benjamin D., Keith A. Johnson, Jennifer Loros, & Jay Dunlap. (1994). Negative Feedback Defining a Circadian Clock: Autoregulation of the Clock Gene frequency. Science. 263(5153). 1578–1584. 500 indexed citations breakdown →

17.

Aronson, Benjamin D., et al.. (1992). Molecular Analysis of the Neurospora Clock: Cloning and Characterization of the frequency and period-4 Genes. Chronobiology International. 9(3). 231–239. 8 indexed citations

18.

Johnson, Keith A.. (1991). Physics for you : national curriculum edition for GCSE. 1 indexed citations

19.

Johnson, Keith A.. (1990). Iofetamine I 123 Single Photon Emission Computed Tomography Is Accurate in the Diagnosis of Alzheimer's Disease. Archives of Internal Medicine. 150(4). 752–752. 64 indexed citations

20.

Johnson, Keith A., G. B. Westermann‐Clark, & D. O. Shah. (1987). Transport of Micelle-Solubilized Steroids Across Microporous Membranes. Journal of Pharmaceutical Sciences. 76(4). 277–285. 11 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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