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Noel T. Keen

D-Index & Metrics

Biology and Biochemistry

D-Index
70
Citations
17263
World Ranking
7015
National Ranking
3227

Noel T. Keen publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Noel T. Keen sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 189 publications — 45th percentile

45% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Noel T. Keen D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Noel T. Keen sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 70 D-Index — 65th percentile

65% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Research.com Recognitions

  • 1997 - Member of the National Academy of Sciences
  • 1995 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Noel T. Keen was affiliated with the University of California, Riverside in the United States. Their research focused on areas within Agricultural and Biological Sciences, particularly engaging with Ecology, Evolution, Behavior and Systematics, Plant Science, and Ecological Modeling.

The scientist contributed to topics including:

  • Lichen and fungal ecology
  • Mediterranean and Iberian flora and fauna
  • Species Distribution and Climate Change

Among their recent publications were:

  • "An updated checklist of serpentinophytes for research and conservation in ultramafic ecosystems on the southern Iberian Peninsula (Spain)", published in 2024 in Ecological Research
  • "POS0928 ASSESSING METRICS OF REAL WORLD GCA ULTRASONOGRAPHY AGAINST THE HALO COUNT, HALO SCORE AND OGUS", published in 2024 in Annals of the Rheumatic Diseases
  • "Independent colonisations of serpentine habitats highlight species-specific evolutionary histories of lineage diversification", published in 2025 in bioRxiv (Cold Spring Harbor Laboratory)

Frequent co-authors included:

  • Andrés Vicente Pérez Latorre
  • Noelia Hidalgo Triana
  • Federico Casimiro-Soriguer Solanas
  • Estefany Goncalves
  • Helen Keen

The scientist's work appeared in venues such as:

  • Ecological Research
  • Annals of the Rheumatic Diseases
  • bioRxiv (Cold Spring Harbor Laboratory)

Noel T. Keen was recognized with memberships and fellowships including:

  • Member of the National Academy of Sciences (1997)
  • Fellow of the American Association for the Advancement of Science (AAAS) (1995)

Best Publications

  • Improved broad-host-range plasmids for DNA cloning in gram-negative bacteria.

    N.T. Keen;S. Tamaki;D. Kobayashi;D. Trollinger

  • New domain motif: The structure of pectate lyase C, a secreted plant virulence factor

    Marilyn D. Yoder;Noel T. Keen;Frances Jurnak

  • Cloned avirulence gene of Pseudomonas syringae pv. glycinea determines race-specific incompatibility on Glycine max (L.) Merr.

    Brian J. Staskawicz;Douglas Dahlbeck;Noel T. Keen

  • Plant-Microbe Interactions

    Gary Stacey;Noel T. Keen

  • Microbial phyllosphere populations are more complex than previously realized.

    Ching-Hong Yang;David E. Crowley;James Borneman;Noel T. Keen

  • β-1,3-Endoglucanase from Soybean Releases Elicitor-Active Carbohydrates from Fungus Cell Walls

    N. T. Keen;M. Yoshikawa

  • Specific elicitors of plant phytoalexin production: detenninants of race specificity in pathogens?

    N. T. Keen

  • Involvement of preformed antifungal compounds in the resistance of subtropical fruits to fungal decay

    D. Prusky;N.T. Keen

  • Molecular cloning of pectate lyase genes from Erwinia chrysanthemi and their expression in Escherichia coli.

    N T Keen;D Dahlbeck;B Staskawicz;W Belser

  • Cloned avirulence genes from the tomato pathogen Pseudomonas syringae pv. tomato confer cultivar specificity on soybean.

    Donald Y. Kobayashi;Stanley J. Tamaki;Noel T. Keen

  • Bacteria expressing avirulence gene D produce a specific elicitor of the soybean hypersensitive reaction.

    N. T. Keen;S. Tamaki;D. Kobayashi;D. Gerhold

  • Structure of two pectate lyase genes from Erwinia chrysanthemi EC16 and their high-level expression in Escherichia coli.

    N T Keen;S Tamaki

  • Accumulation of Salicylic Acid and 4-Hydroxybenzoic Acid in Phloem Fluids of Cucumber during Systemic Acquired Resistance Is Preceded by a Transient Increase in Phenylalanine Ammonia-Lyase Activity in Petioles and Stems

    Jennifer Smith-Becker;Eric Marois;Elisabeth J. Huguet;Sharon L. Midland

  • Development of the Particle Inflow Gun

    Philippe Vain;Noel Keen;Jesus Murillo;Carl Rathus

  • Structure of a Plant Cell Wall Fragment Complexed to Pectate Lyase C

    Robert D. Scavetta;Steven R. Herron;Arland T. Hotchkiss;Nobuhiro Kita

  • Characterization of the Pseudomonas aeruginosa alginate lyase gene (algL): cloning, sequencing, and expression in Escherichia coli.

    N L Schiller;S R Monday;C M Boyd;N T Keen

  • Structure and organization of the pel genes from Erwinia chrysanthemi EC16.

    S J Tamaki;S Gold;M Robeson;S Manulis

  • hrp Genes of Erwinia chrysanthemi 3937 Are Important Virulence Factors

    Ching-Hong Yang;Marina Gavilanes-Ruiz;Yasushi Okinaka;Regine Vedel

  • avrA and avrE in Pseudomonas syringae pv. tomato PT23 play a role in virulence on tomato plants

    J. M. Lorang;H. Shen;D. Kobayashi;D. Cooksey

  • A receptor on soybean membranes for a fungal elicitor of phytoalexin accumulation.

    Masaaki Yoshikawa;N. T. Keen;Ming-Chang Wang

Frequent Co-Authors

Dov Prusky
Dov Prusky Agricultural Research Organization
Gary Stacey
Gary Stacey University of Missouri
Brian J. Staskawicz
Brian J. Staskawicz University of California, Berkeley
Hao Shen
Hao Shen University of Pennsylvania
Nicole T. Perna
Nicole T. Perna University of Wisconsin–Madison
Douglas Dahlbeck
Douglas Dahlbeck University of California, Berkeley
Hans Thordal-Christensen
Hans Thordal-Christensen University of Copenhagen
Shihui Yang
Shihui Yang Wuhan YZY Biopharma (China)
Leah Tsror
Leah Tsror Agricultural Research Organization
David E. Crowley
David E. Crowley University of California, Riverside

External Links

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Best Scientists Citing Noel T. Keen

Alan Collmer

Alan Collmer

Cornell University

Publications: 67

Dov Prusky

Dov Prusky

Agricultural Research Organization

Publications: 50

James R. Alfano

James R. Alfano

University of Nebraska–Lincoln

Publications: 34

Sylvie Reverchon

Sylvie Reverchon

Claude Bernard University Lyon 1

Publications: 34

William Nasser

William Nasser

Claude Bernard University Lyon 1

Publications: 33

Brian J. Staskawicz

Brian J. Staskawicz

University of California, Berkeley

Publications: 33

Ulla Bonas

Ulla Bonas

Martin Luther University Halle-Wittenberg

Publications: 32

Samuel Kaplan

Samuel Kaplan

The University of Texas Health Science Center at Houston

Publications: 30

Stephen K. Farrand

Stephen K. Farrand

University of Illinois at Urbana-Champaign

Publications: 29

Carol L. Bender

Carol L. Bender

Oklahoma State University

Publications: 29

Keith Poole

Keith Poole

Queen's University

Publications: 28

Gabriele Klug

Gabriele Klug

University of Giessen

Publications: 28

Amy O. Charkowski

Amy O. Charkowski

Colorado State University

Publications: 28

Richard A. Dixon

Richard A. Dixon

University of North Texas

Publications: 27

Jeffery L. Dangl

Jeffery L. Dangl

University of North Carolina at Chapel Hill

Publications: 26

Gregory B. Martin

Gregory B. Martin

Boyce Thompson Institute

Publications: 26

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