John Ryals

27.4k total citations · 14 hit papers
109 papers, 21.2k citations indexed

About

John Ryals is a scholar working on Plant Science, Molecular Biology and Biotechnology. According to data from OpenAlex, John Ryals has authored 109 papers receiving a total of 21.2k indexed citations (citations by other indexed papers that have themselves been cited), including 68 papers in Plant Science, 52 papers in Molecular Biology and 13 papers in Biotechnology. Recurrent topics in John Ryals's work include Plant-Microbe Interactions and Immunity (46 papers), Plant pathogens and resistance mechanisms (18 papers) and Plant tissue culture and regeneration (16 papers). John Ryals is often cited by papers focused on Plant-Microbe Interactions and Immunity (46 papers), Plant pathogens and resistance mechanisms (18 papers) and Plant tissue culture and regeneration (16 papers). John Ryals collaborates with scholars based in United States, Switzerland and Japan. John Ryals's co-authors include Scott Uknes, E. R. Ward, Leslie Friedrich, Helmut Keßmann, Urs Neuenschwander, Henry‐York Steiner, Terrence P. Delaney, Antonio Molina, Bernard Vernooij and Kay A. Lawton and has published in prestigious journals such as Science, Cell and Proceedings of the National Academy of Sciences.

In The Last Decade

John Ryals

108 papers receiving 20.0k citations

Hit Papers

5 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.

Systemic Acquired Resistance.

1996 1.6k citations John Ryals, Urs Neuenschwander et al. The Plant Cell profile →
Requirement of Salicylic Acid for the Induction of Systemic Acquired Resistance

1993 1.4k citations Leslie Friedrich, Bernard Vernooij et al. profile →
A Central Role of Salicylic Acid in Plant Disease Resistance

1994 1.4k citations Terrence P. Delaney, Scott Uknes et al. profile →
Coordinate Gene Activity in Response to Agents That Induce Systemic Acquired Resistance.

1991 1.0k citations E. R. Ward, Scott Uknes et al. The Plant Cell profile →
Benzothiadiazole, a novel class of inducers of systemic acquired resistance, activates gene expression and disease resistance in wheat.

1996 878 citations S. Volrath, G. Knauf-Beiter et al. The Plant Cell profile →
Systemic Acquired Resistance

1996 835 citations John Ryals, Urs Neuenschwander et al. The Plant Cell profile →
Acquired resistance in Arabidopsis.

1992 790 citations Scott Uknes, Mary B. Moyer et al. The Plant Cell profile →
Increase in Salicylic Acid at the Onset of Systemic Acquired Resistance in Cucumber

1990 762 citations John Ryals, E. R. Ward et al. profile →
Benzothiadiazole induces disease resistance in Arabidopsis by activation of the systemic acquired resistance signal transduction pathway

1996 641 citations Kay A. Lawton, Leslie Friedrich et al. profile →
Arabidopsis signal transduction mutant defective in chemically and biologically induced disease resistance.

1995 585 citations Terrence P. Delaney, Leslie Friedrich et al. Proceedings of the National Academy of Sciences profile →
Arabidopsis mutants simulating disease resistance response

1994 583 citations Terrence P. Delaney, Scott Uknes et al. profile →
A benzothiadiazole derivative induces systemic acquired resistance in tobacco

1996 563 citations Leslie Friedrich, Kay A. Lawton et al. profile →
α-Hydroxybutyrate Is an Early Biomarker of Insulin Resistance and Glucose Intolerance in a Nondiabetic Population

2010 546 citations Walter Gall, Kirk Beebe et al. PLoS ONE profile →
INDUCTION OF SYSTEMIC ACQUIRED DISEASE RESISTANCE IN PLANTS BY CHEMICALS

1994 481 citations Helmut Keßmann, Theo Staub et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John Ryals United States	65	16.9k	8.0k	1.9k	1.2k	1.1k	109	21.2k
Daniel F. Klessig United States	93	27.5k 1.6×	13.3k 1.7×	1.8k 0.9×	2.2k 1.8×	971 0.9×	238	32.5k
Chris Lamb United States	64	18.2k 1.1×	11.8k 1.5×	1.6k 0.8×	796 0.6×	1.3k 1.2×	115	22.3k
Mikio Nishimura Japan	82	10.8k 0.6×	13.8k 1.7×	2.5k 1.3×	336 0.3×	1.4k 1.3×	443	20.7k
Massimo Delledonne Italy	62	9.5k 0.6×	7.2k 0.9×	1.1k 0.6×	514 0.4×	403 0.4×	197	13.9k
Jian‐Min Zhou China	74	19.2k 1.1×	6.9k 0.9×	1.3k 0.7×	805 0.6×	650 0.6×	167	21.9k
Maarten J. Chrispeels United States	64	9.7k 0.6×	8.6k 1.1×	1.1k 0.6×	537 0.4×	2.6k 2.4×	187	14.3k
Joseph P. Noel United States	80	5.9k 0.4×	16.8k 2.1×	1.1k 0.6×	517 0.4×	1.6k 1.4×	181	21.4k
Michael G. Murray United States	26	8.4k 0.5×	5.5k 0.7×	979 0.5×	396 0.3×	754 0.7×	46	12.5k
Dae‐Jin Yun South Korea	74	12.3k 0.7×	10.0k 1.2×	625 0.3×	443 0.4×	534 0.5×	265	16.4k
Vladimir Shulaev United States	54	11.7k 0.7×	7.6k 0.9×	485 0.3×	684 0.6×	357 0.3×	107	15.9k

Countries citing papers authored by John Ryals

Since Specialization

Citations

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

Fields of papers citing papers by John Ryals

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Ryals

This figure shows the co-authorship network connecting the top 25 collaborators of John Ryals. A scholar is included among the top collaborators of John Ryals 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 Ryals. John Ryals 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

Yobi, Abou, Bernard Wone, Wenxin Xu, et al.. (2012). Metabolomic Profiling in Selaginella lepidophylla at Various Hydration States Provides New Insights into the Mechanistic Basis of Desiccation Tolerance. Molecular Plant. 6(2). 369–385. 116 indexed citations

Oliver, Melvin J., Lining Guo, Danny C. Alexander, et al.. (2011). A Sister Group Contrast Using Untargeted Global Metabolomic Analysis Delineates the Biochemical Regulation Underlying Desiccation Tolerance in Sporobolus stapfianus . The Plant Cell. 23(4). 1231–1248. 189 indexed citations

Lawton, Kay A., Merit Cudkowicz, Meredith V. Brown, et al.. (2011). Biochemical alterations associated with ALS. Amyotrophic Lateral Sclerosis. 13(1). 110–118. 76 indexed citations

Wetmore, Diana, Elizabeth Joseloff, Joseph M. Pilewski, et al.. (2010). Metabolomic Profiling Reveals Biochemical Pathways and Biomarkers Associated with Pathogenesis in Cystic Fibrosis Cells. Journal of Biological Chemistry. 285(40). 30516–30522. 64 indexed citations

Romero, Roberto, Shali Mazaki‐Tovi, Edi Vaisbuch, et al.. (2010). Metabolomics in premature labor: a novel approach to identify patients at risk for preterm delivery. The Journal of Maternal-Fetal & Neonatal Medicine. 23(12). 1344–1359. 134 indexed citations

Gall, Walter, Kirk Beebe, Kay A. Lawton, et al.. (2010). α-Hydroxybutyrate Is an Early Biomarker of Insulin Resistance and Glucose Intolerance in a Nondiabetic Population. PLoS ONE. 5(5). e10883–e10883. 546 indexed citations breakdown →

Ohta, Tetsuya, Naoya Masutomi, Naohisa Tsutsui, et al.. (2009). Untargeted Metabolomic Profiling as an Evaluative Tool of Fenofibrate-Induced Toxicology in Fischer 344 Male Rats. Toxicologic Pathology. 37(4). 521–535. 187 indexed citations

Molina, Antonio, Jörn Görlach, S. Volrath, & John Ryals. (1999). Wheat Genes Encoding Two Types of PR-1 Proteins Are Pathogen Inducible, but Do Not Respond to Activators of Systemic Acquired Resistance. Molecular Plant-Microbe Interactions. 12(1). 53–58. 94 indexed citations

Ryals, John, Kristianna B. Weymann, Kay A. Lawton, et al.. (1997). The Arabidopsis NIM1 protein shows homology to the mammalian transcription factor inhibitor I kappa B.. The Plant Cell. 9(3). 425–439. 376 indexed citations

10.

Görlach, Jörn, S. Volrath, G. Knauf-Beiter, et al.. (1996). Benzothiadiazole, a Novel Class of Inducers of Systemic Acquired Resistance, Activates Gene Expression and Disease Resistance in Wheat. The Plant Cell. 8(4). 629–629. 165 indexed citations

11.

Neuenschwander, Urs, Leslie Friedrich, Terrence P. Delaney, et al.. (1995). Activation of plant disease resistance.. Aspects of applied biology. 217–225. 7 indexed citations

12.

Weymann, Kris, Michelle D. Hunt, Scott Uknes, et al.. (1995). Suppression and Restoration of Lesion Formation in Arabidopsis lsd Mutants. The Plant Cell. 7(12). 2013–2013. 34 indexed citations

13.

Meins, Frederick, Bernard Fritig, Huub J. M. Linthorst, et al.. (1994). Plant chitinase genes. Plant Molecular Biology Reporter. 12(2). S22–S28. 65 indexed citations

14.

Ryals, John, Scott Uknes, & E. R. Ward. (1994). Systemic Acquired Resistance. PLANT PHYSIOLOGY. 104(4). 1109–1112. 349 indexed citations

15.

Mizutani, Masaharu, et al.. (1993). Molecular Cloning and Sequencing of a cDNA Encoding Mung Bean Cytochrome P450 (P450C4H) Possessing Cinnamate 4-Hydroxylase Activity. Biochemical and Biophysical Research Communications. 190(3). 875–880. 81 indexed citations

16.

Lawton, Kay A., E. R. Ward, George B. Payne, Mary B. Moyer, & John Ryals. (1992). Acidic and basic class III chitinase mRNA accumulation in response to TMV infection of tobacco. Plant Molecular Biology. 19(5). 735–743. 94 indexed citations

17.

Edelbaum, Orit, Menachem Rubinstein, Daniela Novick, et al.. (1991). Two antiviral proteins, gp35 and gp22, correspond to ?-1,3-glucanase and an isoform of PR-5. Plant Molecular Biology. 17(1). 171–173. 19 indexed citations

18.

Ward, E. R., George B. Payne, Mary B. Moyer, et al.. (1991). Differential Regulation of β-1,3-Glucanase Messenger RNAs in Response to Pathogen Infection. PLANT PHYSIOLOGY. 96(2). 390–397. 119 indexed citations

19.

Payne, George B., Patrick L. Ahl, Mary B. Moyer, et al.. (1990). Isolation of complementary DNA clones encoding pathogenesis-related proteins P and Q, two acidic chitinases from tobacco.. Proceedings of the National Academy of Sciences. 87(1). 98–102. 125 indexed citations

20.

Payne, George B., Nalini Desai, Shericca Williams, et al.. (1989). Isolation and sequence of a genomic clone encoding the basic form of pathogenesis-related protein 1 fromNicotiana tabacum. Plant Molecular Biology. 12(5). 595–596. 34 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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