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Plant Science and Agronomy
USA
2026

D-Index & Metrics

Plant Science and Agronomy

D-Index
94
Citations
31125
World Ranking
218
National Ranking
76

Genetics

D-Index
92
Citations
27694
World Ranking
1011
National Ranking
492

Timothy J. Close 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 Timothy J. Close 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: 242 publications — 86th percentile

86% of scientists in this discipline score the same or lower.

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

Timothy J. Close 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 Timothy J. Close 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: 94 D-Index — 97th percentile

97% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Plant Science and Agronomy in United States Leader Award
  • 2009 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Timothy J. Close is affiliated with the University of California, Riverside in the United States. Their research expertise lies primarily within the Agricultural and Biological Sciences, with a strong focus on Plant Science and occasional work in Insect Science.

The scientist's research covers several main topics, including:

  • Agricultural pest management studies
  • Legume Nitrogen Fixing Symbiosis
  • Soybean genetics and cultivation
  • Genetic and Environmental Crop Studies
  • Peanut Plant Research Studies
  • Genetics and Plant Breeding
  • Plant Parasitism and Resistance

Timothy J. Close has published in frequent collaboration with other researchers, most notably:

  • María Muñoz-Amatriaín
  • Sassoum Lô
  • Ira A. Herniter
  • Stefano Lonardi
  • Philip A. Roberts

Regular publication venues for their work include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Legume Science
  • Horticulturae
  • Journal of Plant Physiology
  • Proceedings of the National Academy of Sciences

Among their recent scientific papers are:

  • "Genomic resources in plant breeding for sustainable agriculture" (2020, Journal of Plant Physiology)
  • "A receptor-like protein mediates plant immune responses to herbivore-associated molecular patterns" (2020, Proceedings of the National Academy of Sciences)
  • "Genetic, textual, and archeological evidence of the historical global spread of cowpea ( Vigna unguiculata [L.] Walp.)" (2020, Legume Science)
  • "The UCR Minicore: a resource for cowpea research and breeding" (2021, Legume Science)
  • "A view of the pan-genome of domesticated Cowpea ( Vigna unguiculata [L.] Walp.)" (2023, The Plant Genome)

Timothy J. Close was awarded the distinction of Fellow of the American Association for the Advancement of Science (AAAS) in 2009.

Best Publications

  • A physical, genetic and functional sequence assembly of the barley genome

    Klaus F.X. Mayer;Robbie Waugh;Peter Langridge;Timothy J. Close

  • A chromosome conformation capture ordered sequence of the barley genome

    Martin Mascher;Heidrun Gundlach;Axel Himmelbach;Sebastian Beier

  • Dehydrins: Emergence of a biochemical role of a family of plant dehydration proteins

    Timothy J. Close

  • Dehydrins: A commonalty in the response of plants to dehydration and low temperature

    Timothy J. Close

  • A cDNA-based comparison of dehydration-induced proteins (dehydrins) in barley and corn.

    Timothy J. Close;Alexander A. Kortt;Peter M. Chandler

  • Development and implementation of high-throughput SNP genotyping in barley

    Timothy J Close;Prasanna R Bhat;Prasanna R Bhat;Stefano Lonardi;Yonghui Wu;Yonghui Wu

  • CLARK: fast and accurate classification of metagenomic and genomic sequences using discriminative k-mers

    Rachid Ounit;Steve Wanamaker;Timothy J Close;Stefano Lonardi

  • Efficient and accurate construction of genetic linkage maps from the minimum spanning tree of a graph.

    Yonghui Wu;Prasanna R. Bhat;Timothy J. Close;Stefano Lonardi

  • Comparative Transcriptional Profiling of Two Contrasting Rice Genotypes under Salinity Stress during the Vegetative Growth Stage

    Harkamal Walia;Clyde Wilson;Pascal Condamine;Xuan Liu

  • Expression of dehydrins under heat stress and their relationship with water relations of sugarcane leaves

    A. Wahid;T. J. Close

  • Comparative DNA Sequence Analysis of Wheat and Rice Genomes

    Mark E. Sorrells;Mauricio La Rota;Catherine E. Bermudez-Kandianis;Robert A. Greene

  • INTERMEDIUM-C, a modifier of lateral spikelet fertility in barley, is an ortholog of the maize domestication gene TEOSINTE BRANCHED 1

    Luke Ramsay;Jordi Comadran;Arnis Druka;David F Marshall

  • A chromosome bin map of 16,000 expressed sequence tag loci and distribution of genes among the three genomes of polyploid wheat.

    L. L. Qi;B. Echalier;S. Chao;S. Chao;G. R. Lazo

  • The binding of Maize DHN1 to Lipid Vesicles. Gain of Structure and Lipid Specificity

    Myong-Chul Koag;Raymond D. Fenton;Stephan Wilkens;Timothy J. Close

  • Purification, immunolocalization, cryoprotective, and antifreeze activity of PCA60: A dehydrin from peach (Prunus persica)

    Michael Wisniewski;Robert Webb;Ron Balsamo;Timothy J Close

  • Dehydrins: genes, proteins, and associations with phenotypic traits

    Scott A. Campbell;Timothy J. Close

  • Recent history of artificial outcrossing facilitates whole-genome association mapping in elite inbred crop varieties

    Nils Rostoks;Luke Ramsay;Katrin MacKenzie;Linda Cardle

  • The Organization and Rate of Evolution of Wheat Genomes Are Correlated With Recombination Rates Along Chromosome Arms

    Eduard D. Akhunov;Andrew W. Goodyear;Shu Geng;Li-Li Qi

  • A New Resource for Cereal Genomics: 22K Barley GeneChip Comes of Age

    Timothy J. Close;Steve I. Wanamaker;Rico A. Caldo;Stacy M. Turner

  • A view of plant dehydrins using antibodies specific to the carboxy terminal peptide.

    Timothy J. Close;Raymond D. Fenton;Francis Moonan

  • Genome-wide SNP discovery and linkage analysis in barley based on genes responsive to abiotic stress

    Nils Rostoks;Sharon Mudie;Linda Cardle;Joanne Russell

  • Construction and characterization of the chloramphenicol-resistance gene cartridge: a new approach to the transcriptional mapping of extrachromosomal elements.

    Timothy J. Close;R.L. Rodriguez

  • Barley Cbf3 Gene Identification, Expression Pattern, and Map Location

    Dong-Woog Choi;Edmundo M. Rodriguez;Timothy J. Close

  • The barley (Hordeum vulgare L.) dehydrin multigene family: sequences, allele types, chromosome assignments, and expression characteristics of 11 Dhn genes of cv Dicktoo

    D.-W. Choi;B. Zhu;T. J. Close

Frequent Co-Authors

Philip A. Roberts
Philip A. Roberts University of California, Riverside
Stefano Lonardi
Stefano Lonardi University of California, Riverside
Gary J. Muehlbauer
Gary J. Muehlbauer University of Minnesota
Shiaoman Chao
Shiaoman Chao Agricultural Research Service
Robbie Waugh
Robbie Waugh James Hutton Institute
Nils Stein
Nils Stein University of Western Australia
Yonghui Wu
Yonghui Wu Google (United States)
Harkamal Walia
Harkamal Walia University of Nebraska–Lincoln
Patrick M. Hayes
Patrick M. Hayes Oregon State University
Roger P. Wise
Roger P. Wise Agricultural Research Service

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