World's Best Scientists 2026 revealed!
Ralf-Udo Ehlers

Ralf-Udo Ehlers

D-Index & Metrics

Biology and Biochemistry

D-Index
50
Citations
9134
World Ranking
17634
National Ranking
1219

Ralf-Udo Ehlers 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 Ralf-Udo Ehlers 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: 308 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Ralf-Udo Ehlers 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 Ralf-Udo Ehlers 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: 50 D-Index — 11th percentile

11% of scientists in this discipline score the same or lower.

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

Overview

Ralf-Udo Ehlers is affiliated with E-nema in Germany, focusing on research within Agricultural and Biological Sciences and Biochemistry, Genetics and Molecular Biology. Their work spans multiple subfields, notably Insect Science, Molecular Biology, and Plant Science, with additional contributions in Aging and Cell Biology.

The scientist's research primarily addresses topics related to entomopathogenic microorganisms used in pest control and insect resistance and genetics. Their portfolio also includes studies on nematode management and characterization, insect symbiosis and bacterial influences, insect pest control strategies, plant-microbe interactions and immunity, and insect and pesticide research.

Frequent coauthors in their publications include Carlos Molina, Verena Dörfler, Mike Barg, Bart Vandenbossche, and Giulia Godina.

Ralf-Udo Ehlers publishes regularly in several research venues, with the highest number of publications in Nematology, followed by the Journal of Invertebrate Pathology, the Journal of Applied Entomology, the World Journal of Microbiology and Biotechnology, and Scientific Reports.

Selected recent papers authored or coauthored by Ehlers include:

  • Characterization of the phenotypic and genotypic tolerance to abiotic stresses of natural populations of Heterorhabditis bacteriophora, 2020, Scientific Reports
  • Molecular identification, phylogeny and phylogeography of the entomopathogenic nematodes of the genus Heterorhabditis Poinar, 1976: a multigene approach, 2020, Nematology
  • Gluconacetobacter diazotrophicus Pal5 Enhances Plant Robustness Status under the Combination of Moderate Drought and Low Nitrogen Stress in Zea mays L., 2021, Microorganisms
  • Stress tolerance in entomopathogenic nematodes: Engineering superior nematodes for precision agriculture, 2023, Journal of Invertebrate Pathology
  • Single nucleotide polymorphism markers in Heterorhabditis bacteriophora associated with virulence at low temperature, 2022, Nematology

Best Publications

  • Nematodes as biocontrol agents

    Parwinder S. Grewal;Ralf-Udo Ehlers;David I. Shapiro-Ilan

  • Mass production of entomopathogenic nematodes for plant protection

    Ralf-Udo Ehlers

  • Status of entomopathogenic nematodes and their symbiotic bacteria from selected countries or regions of the world

    Harry K. Kaya;M.M. Aguillera;Alfred Alumai;Ho Yul Choo

  • Current and Future Use of Nematodes in Biocontrol: Practice and Commercial Aspects with Regard to Regulatory Policy Issues

    Ralf-Udo Ehlers

  • Pathogenicity, development, and reproduction of Heterorhabditis bacteriophora and Steinernema carpocapsae under axenic in vivo conditions.

    Richou Han;Ralf-Udo Ehlers

  • Food signal production of Photorhabdus luminescens inducing the recovery of entomopathogenic nematodes Heterorhabditis spp. in liquid culture

    O. Strauch;R.-U. Ehlers

  • Establishment of monoxenic inocula for scaling up in vitro cultures of the entomopathogenic nematodes Steinernema spp. and Heterorhabditis spp

    S. Lunau;S. Stoessel;A.J. Schmidt-Peisker;R.-U. Ehlers

  • Susceptibility of leatherjackets (Tipula paludosa and Tipula oleracea; Tipulidae; Nematocera) to the entomopathogenic nematode Steinernema feltiae.

    Arne Peters;Ralf-Udo Ehlers

  • Nematodes as Biological Control Agents

    Parwinder S Grewal;R Ehlers;D I Shapiro-llan

  • Liquid culture of the entomopathogenic nematode-bacterium-complex Heterorhabditis megidis/Photorhabdus luminescens

    Ralf-Udo Ehlers;Stefan Lunau;Karina Krasomil-Osterfeld;Karl Hermann Osterfeld

  • Dangerous liaisons: The symbiosis of entomopathogenic nematodes and bacteria

    Todd A. Ciche;Creg Darby;Ralf-Udo Ehlers;Steven Forst

  • The structure of the Brassica napus seed microbiome is cultivar-dependent and affects the interactions of symbionts and pathogens

    Daria Rybakova;Riccardo Mancinelli;Riccardo Mancinelli;Mariann Wikström;Ann-Sofie Birch-Jensen

  • Lawn, turfgrass and pasture applications.

    P. S. Grewal;A. M. Koppenhöfer;H. Y. Choo;R. U. Ehlers

  • Insect Biocontrol with Non-endemic Entomopathogenic Nematodes (Steinernema and Heterorhabditis spp.): Conclusions and Recommendations of a Combined OECD and COST Workshop on Scientific and Regulatory Policy Issues

    R.-U. Ehlers;H. M. T. Hokkanen

  • Field persistence of the entomopathogenic nematode Heterorhabditis bacteriophora in different crops

    Alper Susurluk;Alper Susurluk;Ralf-Udo Ehlers

  • Culture conditions define automictic or amphimictic reproduction in entomopathogenic rhabditid nematodes of the genus Heterorhabditis

    O. Strauch;S. Stoessel;R.-U. Ehlers

  • Foliar application of the entomopathogenic nematode Steinernema carpocapsae for biological control of diamondback moth larvae (Plutella xylostella)

    S. Schroer;R.-U. Ehlers

  • Compatibility and interactions with agrochemicals and other biocontrol agents.

    A. M. Koppenhöfer;P. S. Grewal;R. U. Ehlers;D. I. Shapiro-Ilan

  • Juvenile development and life cycle of Heterorhabditis bacteriophora and H. indica (Nematoda: Heterorhabditidae)

    Stefan-Andreas Johnigk;Ralf-Udo Ehlers

  • The influence of phase variants of Xenorhabdus spp. and Escherichia coli (Enterobacteriaceae) on the propagation of entomopathogenic nematodes of the genera Steinernema and Heterorhabditis

    Ralf-Udo Ehlers;Stefan Stoessel;Urs Wyss

Frequent Co-Authors

Erko Stackebrandt
Erko Stackebrandt Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures
Gabriele Berg
Gabriele Berg University of Potsdam
Maurice Moens
Maurice Moens Ghent University
Neus Teixidó
Neus Teixidó Institute of Agrifood Research and Technology
Christoph Keel
Christoph Keel University of Lausanne
Michael T. Wilson
Michael T. Wilson University of Essex
Sergei A. Subbotin
Sergei A. Subbotin California Department of Food and Agriculture
Harry K. Kaya
Harry K. Kaya University of California, Davis

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