World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
38
Citations
6419
World Ranking
4337
National Ranking
1072

Malcolm R. Siegel publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Malcolm R. Siegel sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 90 publications — 18th percentile

18% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

Malcolm R. Siegel D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Malcolm R. Siegel sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 38 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Gene
  • Botany
  • Enzyme

The scientist’s investigation covers issues in Botany, Endophyte, Festuca arundinacea, Epichloë and Acremonium. He works in the field of Botany, namely Lolium. His research in Endophyte intersects with topics in Aphid and Festuca.

His research integrates issues of Epichloe typhina, Seed treatment, Pyrrolizidine and Epichloë coenophiala in his study of Festuca arundinacea. His Epichloë research incorporates elements of Nucleic acid sequence, Gene, Agronomy and Neotyphodium. His Acremonium research incorporates themes from Fungi imperfecti and Parasitism.

His most cited work include:

  • Fungal endophyte-infected grasses: Alkaloid accumulation and aphid response. (336 citations)
  • Fungal Endophytes of Grasses (240 citations)
  • Evolutionary diversification of fungal endophytes of tall fescue grass by hybridization with Epichloë species (227 citations)

What are the main themes of his work throughout his whole career to date?

Malcolm R. Siegel mainly investigates Botany, Endophyte, Acremonium, Animal science and Festuca arundinacea. His work deals with themes such as Epichloë and Nicotiana tabacum, which intersect with Botany. His Endophyte research integrates issues from Perennial plant, Aphid, Poaceae, Agronomy and Host.

His Acremonium research includes themes of Weight gain, Fungi imperfecti, Toxicity, Festuca arizonica and Lolium perenne. His Animal science research is multidisciplinary, incorporating perspectives in Acremonium coenophialum, Rodent, Endocrinology and Reproduction. His Festuca arundinacea study combines topics in areas such as Protoplast, Pyrrolizidine, Epichloë coenophiala and Fungicide.

He most often published in these fields:

  • Botany (60.00%)
  • Endophyte (47.14%)
  • Acremonium (30.00%)

What were the highlights of his more recent work (between 1993-2018)?

  • Botany (60.00%)
  • Epichloë (15.71%)
  • Endophyte (47.14%)

In recent papers he was focusing on the following fields of study:

Botany, Epichloë, Endophyte, Festuca and Host are his primary areas of study. His study in the fields of Acremonium and Fungal endophyte under the domain of Botany overlaps with other disciplines such as Ergot alkaloid. Malcolm R. Siegel has included themes like Genus, Agronomy and Neotyphodium in his Epichloë study.

His Endophyte research is multidisciplinary, incorporating elements of Genetics, Alkaloid, Animal science and Festuca arundinacea. His work in Festuca addresses subjects such as Lolium, which are connected to disciplines such as Aphid and Loline alkaloid. Malcolm R. Siegel interconnects Perennial plant, Inoculation, Inflorescence, Poaceae and Seedling in the investigation of issues within Host.

Between 1993 and 2018, his most popular works were:

  • Evolutionary diversification of fungal endophytes of tall fescue grass by hybridization with Epichloë species (227 citations)
  • Contribution of Fungal Loline Alkaloids to Protection from Aphids in a Grass-Endophyte Mutualism (208 citations)
  • Sexual compatibility and taxonomy of a new species of Epichloe symbiotic with fine fescue grasses (155 citations)

In his most recent research, the most cited papers focused on:

  • Gene
  • Botany
  • Enzyme

Malcolm R. Siegel mostly deals with Epichloë, Botany, Neotyphodium, Endophyte and Epichloe festucae. The various areas that Malcolm R. Siegel examines in his Epichloë study include Lolium and Festuca arundinacea. His Lolium research integrates issues from Aphid, Festuca and Loline alkaloid.

Malcolm R. Siegel has researched Festuca arundinacea in several fields, including Ascomycota and Phylogenetic tree. His research in Epichloe festucae intersects with topics in Acremonium and Agronomy, Festuca rubra.

Best Publications

  • Fungal endophyte-infected grasses: Alkaloid accumulation and aphid response.

    M. R. Siegel;G. C. M. Latch;L. P. Bush;F. F. Fannin

  • Fungal Endophytes of Grasses

    M. R. Siegel;G. C. M. Latch;M. C. Johnson

  • Contribution of Fungal Loline Alkaloids to Protection from Aphids in a Grass-Endophyte Mutualism

    Heather H. Wilkinson;Malcolm R. Siegel;Jimmy D. Blankenship;Allison C. Mallory

  • Evolutionary diversification of fungal endophytes of tall fescue grass by hybridization with Epichloë species

    Huei-Fung Tsai;Jih-Shiou Liu;Chuck Staben;Michael J. Christensen

  • Endophyte Parasitism of Tall Fescue

    Charles W. Bacon;Malcolm R. Siegel

  • A fungal endophyte in tall fescue: incidence and dissemination

    M. R. Siegel;M. C. Johnson;D. R. Varney;W. C. Nesmith

  • Insect feeding deterrents in endophyte-infected tall fescue.

    M. C. Johnson;D. L. Dahlman;M. R. Siegel;L. P. Bush

  • Chemistry, occurrence and biological effects of saturated pyrrolizidine alkaloids associated with endophyte-grass interactions

    L.P. Bush;F.F. Fannin;M.R. Siegel;D.L. Dahlman

  • Sexual compatibility and taxonomy of a new species of Epichloe symbiotic with fine fescue grasses

    Adrian Leuchtmann;Christopher L. Schardl;Malcolm R. Siegel

  • Molecular phylogenetic relationships of nonpathogenic grass mycosymbionts and clavicipitaceous plant pathogens

    Christopher L. Schardl;Jih Shiou Liu;James F. White;Raphael A. Finkel

  • Suppression of mycorrhizal fungi in fescue by the acremonium coenophialum endophyte

    Myra Chu-Chou;B. Guo;Z.-Q. An;J.W. Hendrix

  • The β-tubulin gene of Epichloë typhina from perennial ryegrass (Lolium perenne).

    Alfred D. Byrd;Christopher L. Schardl;Peeranan J. Songlin;Kim L. Mogen

  • Rhizome and herbage production of endophyte-removed tall fescue clones and populations

    J. P. De Battista;J. H. Bouton;C. W. Bacon;M. R. Siegel

  • An Endophytic Fungus and Resistance to Sod Webworms: Association in Lolium Perenne L.

    Unknown

  • Defensive chemicals in grass-fungal endophyte associations.

    Malcolm R. Siegel;Lowell P. Bush

  • Mechanism of action and fate of the fungicide chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile) in biological systems: I. Reactions with cells and subcellular components of Saccharomyces pastorianus

    Ronald W. Tillman;Malcolm R. Siegel;John W. Long

  • Detection of Epichloe typhina in tall fescue by means of enzyme-linked immunosorbent assay.

    M. C. Johnson;T. P. Pirone;M. R. Siegel;D. R. Varney

  • Relationships among non-Acremonium sp. fungal endophytes in five grass species.

    Zhi-Qiang An;M. R. Siegel;W. Hollin;Huei-Fung Tsai

  • A fungal endophyte of tall fescue: evaluation of control methods.

    M. R. Siegel;D. R. Varney;M. C. Johnson;W. C. Nesmith

  • Expression of antifungal activity in agar culture by isolates of grass endophytes

    Malcolm R. Siegel;Garrick C. M. Latch

  • Performance of lactating dairy cows fed tall fescue forage.

    S.R. Strahan;R.W. Hemken;J.A. Jackson;R.C. Buckner

  • Toxin Production in Grass/Endophyte Associations

    M. R. Siegel;L. P. Bush

  • Transformation of Acremonium coenophialum, a protective fungal symbiont of the grass Festuca arundinacea.

    Huei-Fung Tsai;Malcolm R. Siegel;Christopher L. Schardl

Frequent Co-Authors

Lowell P. Bush
Lowell P. Bush University of Kentucky
R.W. Hemken
R.W. Hemken University of Kentucky
Christopher L. Schardl
Christopher L. Schardl University of Kentucky
Joseph Kuć
Joseph Kuć University of Kentucky
Zhiqiang An
Zhiqiang An The University of Texas Health Science Center at Houston
James A. Boling
James A. Boling University of Kentucky
James F. White
James F. White Rutgers, The State University of New Jersey
Charles W. Bacon
Charles W. Bacon Agricultural Research Service
Daryl D. Rowan
Daryl D. Rowan Plant & Food Research
Robert J. Harmon
Robert J. Harmon University of Kentucky

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