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Peter R. Ryan

D-Index & Metrics

Biology and Biochemistry

D-Index
65
Citations
23278
World Ranking
8971
National Ranking
235

Peter R. Ryan 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 Peter R. Ryan 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: 124 publications — 14th percentile

14% of scientists in this discipline score the same or lower.

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

Peter R. Ryan 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 Peter R. Ryan 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: 65 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

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

Overview

Peter R. Ryan is affiliated with the Commonwealth Scientific and Industrial Research Organisation in Australia. Their research spans primarily the field of Agricultural and Biological Sciences, with a significant focus on Plant Science. Their work also intersects with Agronomy and Crop Science, Soil Science, Analytical Chemistry, and Food Science.

The main areas of research that define this scientist's work include:

  • Plant nutrient uptake and metabolism
  • Aluminum toxicity and tolerance in plants and animals
  • Plant micronutrient interactions and effects
  • Wheat and barley genetics and pathology
  • Plant-microbe interactions and immunity
  • Plant stress responses and tolerance
  • Legume nitrogen fixing symbiosis

Their recent publications illustrate a range of topics within plant and soil sciences, including root exudate composition, aluminum tolerance mechanisms, root microbiomes, soil phosphorus mobilization, and early vigor in wheat. Key papers include:

  • "Manipulating exudate composition from root apices shapes the microbiome throughout the root system," 2021, PLANT PHYSIOLOGY
  • "ZmMATE6 from maize encodes a citrate transporter that enhances aluminum tolerance in transgenic Arabidopsis thaliana," 2021, Plant Science
  • "The microbiomes on the roots of wheat (Triticum aestivum L.) and rice (Oryza sativa L.) exhibit significant differences in structure between root types and along root axes," 2021, Functional Plant Biology
  • "Organic anions facilitate the mobilization of soil organic phosphorus and its subsequent lability to phosphatases," 2022, Plant and Soil
  • "Competitiveness of Early Vigour Wheat (Triticum aestivum L.) Genotypes Is Established at Early Growth Stages," 2022, Agronomy

Frequent co-authors contributing to collaborative research efforts include:

  • Emmanuel Delhaize
  • Akitomo Kawasaki
  • Hanmei Du
  • Anton Wasson
  • Ulrike Mathesius

Common venues for publication demonstrate a consistent scholarly presence in plant and agricultural sciences, including:

  • Plant and Soil
  • PLANT PHYSIOLOGY
  • Functional Plant Biology
  • Journal of Experimental Botany
  • Plants

Best Publications

  • Aluminum Toxicity and Tolerance in Plants

    Emmanuel Delhaize;Peter R. Ryan

  • FUNCTION AND MECHANISM OF ORGANIC ANION EXUDATION FROM PLANT ROOTS

    PR Ryan;E Delhaize;DL Jones

  • Aluminium tolerance in plants and the complexing role of organic acids

    Jian Feng Ma;Peter R Ryan;Emmanuel Delhaize

  • Aluminum Tolerance in Wheat (Triticum aestivum L.) (II. Aluminum-Stimulated Excretion of Malic Acid from Root Apices)

    Emmanuel Delhaize;Peter R. Ryan;Peter J. Randall

  • A wheat gene encoding an aluminum‐activated malate transporter

    Takayuki Sasaki;Yoko Yamamoto;Bunichi Ezaki;Maki Katsuhara

  • Plant and microbial strategies to improve the phosphorus efficiency of agriculture

    Alan E. Richardson;Alan E. Richardson;Jonathan P. Lynch;Peter R. Ryan;Emmanuel Delhaize

  • Aluminium Toxicity in Roots: An Investigation of Spatial Sensitivity and the Role of the Root Cap

    Peter R. Ryan;Joseph M. Ditomaso;Leon V. Kochian

  • AtALMT1, which encodes a malate transporter, is identified as one of several genes critical for aluminum tolerance in Arabidopsis

    Owen A. Hoekenga;Lyza G. Maron;Miguel A. Piñeros;Geraldo M. A. Cançado;Geraldo M. A. Cançado

  • Characterisation of Al-stimulated efflux of malate from the apices of Al-tolerant wheat roots

    Peter R. Ryan;Emmanuel Delhaize;Peter J. Randall

  • Engineering high-level aluminum tolerance in barley with the ALMT1 gene

    Emmanuel Delhaize;Peter R. Ryan;Diane M. Hebb;Yoko Yamamoto

  • Strategies and agronomic interventions to improve the phosphorus-use efficiency of farming systems

    Richard J. Simpson;Astrid Oberson;Richard A. Culvenor;Megan H. Ryan

  • GABA signalling modulates plant growth by directly regulating the activity of plant-specific anion transporters

    Sunita A. Ramesh;Stephen D. Tyerman;Bo Xu;Jayakumar Bose;Jayakumar Bose

  • The identification of aluminium-resistance genes provides opportunities for enhancing crop production on acid soils

    P. R. Ryan;S. D. Tyerman;T. Sasaki;T. Furuichi

  • Interactive Effects of Al3+, H+, and Other Cations on Root Elongation Considered in Terms of Cell-Surface Electrical Potential

    Thomas B. Kinraide;Peter R. Ryan;Leon V. Kochian

  • A Second Mechanism for Aluminum Resistance in Wheat Relies on the Constitutive Efflux of Citrate from Roots

    Peter R. Ryan;Harsh Raman;Sanjay Gupta;Walter J. Horst

  • Effect of phosphorus supply on the formation and function of proteoid roots of white lupin (Lupinus albus L.)

    G. Keerthisinghe;P. J. Hocking;P. R. Ryan;E. Delhaize

  • Transcriptional regulation of aluminium tolerance genes

    Emmanuel Delhaize;Jian Feng Ma;Peter R. Ryan

  • Malate Efflux From Root Apices and Tolerance to Aluminium Are Highly Correlated in Wheat

    PR Ryan;E Delhaize;PJ Randall

  • Genes Encoding Proteins of the Cation Diffusion Facilitator Family That Confer Manganese Tolerance

    Emmanuel Delhaize;Tatsuhiko Kataoka;Diane M. Hebb;Rosemary G. White

  • Rhizosphere engineering and management for sustainable agriculture

    Peter R. Ryan;Yves Dessaux;Linda S. Thomashow;David M. Weller

Frequent Co-Authors

Emmanuel Delhaize
Emmanuel Delhaize Australian National University
Alan Richardson
Alan Richardson Commonwealth Scientific and Industrial Research Organisation
Yoko Yamamoto
Yoko Yamamoto Okayama University
Meixue Zhou
Meixue Zhou University of Tasmania
Michelle Watt
Michelle Watt University of Melbourne
Stephen D. Tyerman
Stephen D. Tyerman University of Adelaide
Hideaki Matsumoto
Hideaki Matsumoto Kibi International University
Harsh Raman
Harsh Raman New South Wales Department of Primary Industries
Richard A. James
Richard A. James Commonwealth Scientific and Industrial Research Organisation
Sergey Shabala
Sergey Shabala University of Western Australia

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Best Scientists Citing Peter R. Ryan

Hans Lambers

Hans Lambers

University of Western Australia

Publications: 124

Jian Feng Ma

Jian Feng Ma

Okayama University

Publications: 85

Leon V. Kochian

Leon V. Kochian

University of Saskatchewan

Publications: 80

Hideaki Matsumoto

Hideaki Matsumoto

Kibi International University

Publications: 71

Zed Rengel

Zed Rengel

University of Western Australia

Publications: 63

Sergey Shabala

Sergey Shabala

University of Western Australia

Publications: 61

Walter J. Horst

Walter J. Horst

University of Hannover

Publications: 55

Shao Jian Zheng

Shao Jian Zheng

Zhejiang University

Publications: 55

Philip J. White

Philip J. White

James Hutton Institute

Publications: 43

Alan Richardson

Alan Richardson

Commonwealth Scientific and Industrial Research Organisation

Publications: 42

Timothy S. George

Timothy S. George

James Hutton Institute

Publications: 41

Megan H. Ryan

Megan H. Ryan

University of Western Australia

Publications: 39

Naoki Yamaji

Naoki Yamaji

Okayama University

Publications: 38

Charlotte Poschenrieder

Charlotte Poschenrieder

Autonomous University of Barcelona

Publications: 38

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Yuriko Kobayashi

Gifu University

Publications: 37

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Ren Fang Shen

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