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Nozomu Koizumi

D-Index & Metrics

Biology and Biochemistry

D-Index
46
Citations
7897
World Ranking
18939
National Ranking
1363

Nozomu Koizumi 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 Nozomu Koizumi 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: 126 publications — 15th percentile

15% of scientists in this discipline score the same or lower.

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

Nozomu Koizumi 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 Nozomu Koizumi 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: 46 D-Index — 4th percentile

4% of scientists in this discipline score the same or lower.

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

Overview

Nozomu Koizumi is affiliated with Osaka Metropolitan University in Japan. Their research encompasses various aspects of biochemistry, genetics, molecular biology, agricultural and biological sciences. Koizumi's work is concentrated in molecular biology and plant science, with additional focus on biochemistry, cell biology, and insect science.

Their primary areas of investigation include photosynthetic processes and mechanisms, antioxidant activity and oxidative stress, plant molecular biology research, RNA research and splicing, plant stress responses and tolerance, plant reproductive biology, and endoplasmic reticulum stress and disease.

Koizumi has published extensively in several academic venues. Frequent publication outlets include:

  • Plant Biotechnology
  • Food Quality and Preference
  • Plant Cell Reports
  • Genes to Cells
  • PLoS ONE

Among notable recent papers are:

  • "Comparison of public attitudes toward five alternative proteins in Japan" (2022, Food Quality and Preference)
  • "Genetic engineering of eggplant accumulating β-carotene in fruit" (2020, Plant Cell Reports)
  • "Unpaired nucleotides on the stem of microRNA precursor are important for precise cleavage by Dicer-like 1 in Arabidopsis" (2022, Genes to Cells)
  • "THESEUS1 is involved in tunicamycin-induced root growth inhibition, ectopic lignin deposition, and cell wall damage-induced unfolded protein response" (2022, Plant Biotechnology)
  • "A comparative analysis of attitudes toward genome-edited food among Japanese public and scientific community" (2024, PLoS ONE)

Koizumi frequently collaborates with other researchers, including:

  • Yuji Iwata
  • Kei-ichiro Mishiba
  • Yube Yamaguchi
  • Ryuma Shineha
  • Satomi Takeda

Best Publications

  • Periodic DNA Methylation in Maize Nucleosomes and Demethylation by Environmental Stress

    Nicolas Steward;Mikako Ito;Yube Yamaguchi;Nozomu Koizumi

  • An Arabidopsis transcription factor, AtbZIP60, regulates the endoplasmic reticulum stress response in a manner unique to plants.

    Yuji Iwata;Nozomu Koizumi

  • Arabidopsis bZIP60 Is a Proteolysis-Activated Transcription Factor Involved in the Endoplasmic Reticulum Stress Response

    Yuji Iwata;Nina V. Fedoroff;Nozomu Koizumi

  • Producing decaffeinated coffee plants

    Shinjiro Ogita;Hirotaka Uefuji;Yube Yamaguchi;Nozomu Koizumi

  • Arabidopsis IRE1 catalyses unconventional splicing of bZIP60 mRNA to produce the active transcription factor

    Yukihiro Nagashima;Kei-ichiro Mishiba;Eiji Suzuki;Yukihisa Shimada

  • Molecular characterization of two Arabidopsis Ire1 homologs, endoplasmic reticulum-located transmembrane protein kinases.

    Nozomu Koizumi;Immaculada M. Martinez;Yukio Kimata;Kenji Kohno

  • The STT3a Subunit Isoform of the Arabidopsis Oligosaccharyltransferase Controls Adaptive Responses to Salt/Osmotic Stress

    Hisashi Koiwa;Fang Li;Michael G. McCully;Imelda Mendoza

  • Screening of cadmium‐responsive genes in Arabidopsis thaliana

    N. Suzuki;N. Koizumi;H. Sano

  • Plant transducers of the endoplasmic reticulum unfolded protein response

    Yuji Iwata;Nozomu Koizumi

  • Secreted proteins of tobacco cultured BY2 cells: identification of a new member of pathogenesis-related proteins.

    Y. Okushima;N. Koizumi;T. Kusano;H. Sano

  • Defects in IRE1 enhance cell death and fail to degrade mRNAs encoding secretory pathway proteins in the Arabidopsis unfolded protein response

    Kei-ichiro Mishiba;Yukihiro Nagashima;Eiji Suzuki;Noriko Hayashi

  • Osmotic Stress Tolerance of Transgenic Tobacco Expressing a Gene Encoding a Membrane-Located Receptor-Like Protein from Tobacco Plants

    Takashi Tamura;Kojiro Hara;Yube Yamaguchi;Nozomu Koizumi

  • Molecular Cloning and Functional Characterization of Three Distinct N-Methyltransferases Involved in the Caffeine Biosynthetic Pathway in Coffee Plants

    Hirotaka Uefuji;Shinjiro Ogita;Yube Yamaguchi;Nozomu Koizumi

  • 7-Methylxanthine methyltransferase of coffee plants. Gene isolation and enzymatic properties.

    Mikihiro Ogawa;Yuka Herai;Nozomu Koizumi;Tomonobu Kusano

  • Identification of an Arabidopsis transmembrane bZIP transcription factor involved in the endoplasmic reticulum stress response

    Hiromi Tajima;Yuji Iwata;Megumi Iwano;Seiji Takayama

  • Regulation by Cytokinins of Endogenous Levels of Jasmonic and Salicylic Acids in Mechanically Wounded Tobacco Plants

    Hiroshi Sano;Shigemi Seo;Nozomu Koizumi;Tomoya Niki

  • Cadmium stress induces production of thiol compounds and transcripts for enzymes involved in sulfur assimilation pathways in Arabidopsis

    Emiko Harada;Yube Yamaguchi;Nozomu Koizumi;Sano Hiroshi

  • Identification of early-responsive genes associated with the hypersensitive response to tobacco mosaic virus and characterization of a WRKY-type transcription factor in tobacco plants.

    H. Yoda;M. Ogawa;Y. Yamaguchi;N. Koizumi

  • Glycosyl hydrolases of cell wall are induced by sugar starvation in Arabidopsis

    Eun-Jeong Lee;Yasuhiro Matsumura;Kouichi Soga;Takayuki Hoson

  • The crystal structure of the novel calcium-binding protein AtCBL2 from Arabidopsis thaliana.

    Masamichi Nagae;Akira Nozawa;Nozomu Koizumi;Hiroshi Sano

Frequent Co-Authors

Hiroshi Sano
Hiroshi Sano Nara Institute of Science and Technology
Tomonobu Kusano
Tomonobu Kusano Tohoku University
Yasuyuki Yamada
Yasuyuki Yamada Hosei University
Fumihiko Sato
Fumihiko Sato Kyoto University
Maarten J. Chrispeels
Maarten J. Chrispeels University of California, San Diego
Seiji Takayama
Seiji Takayama University of Tokyo
Toshiyuki Shimizu
Toshiyuki Shimizu University of Tokyo
Nina V. Fedoroff
Nina V. Fedoroff Pennsylvania State University
Kenji Kohno
Kenji Kohno Nara Institute of Science and Technology
Megumi Iwano
Megumi Iwano Nara Institute of Science and Technology

External Links

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Best Scientists Citing Nozomu Koizumi

Hiroshi Sano

Hiroshi Sano

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Publications: 38

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Stephen H. Howell

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Iowa State University

Publications: 28

Jeanmarie Verchot

Jeanmarie Verchot

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Publications: 20

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Publications: 19

Jörg Kudla

Jörg Kudla

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Publications: 19

Fumio Takaiwa

Fumio Takaiwa

National Agriculture and Food Research Organization

Publications: 18

Hisashi Koiwa

Hisashi Koiwa

Texas A&M University

Publications: 17

Raymond L. Rodriguez

Raymond L. Rodriguez

University of California, Davis

Publications: 16

Tomonobu Kusano

Tomonobu Kusano

Tohoku University

Publications: 16

Jian-Kang Zhu

Jian-Kang Zhu

Southern University of Science and Technology

Publications: 16

Sheng Luan

Sheng Luan

University of California, Berkeley

Publications: 14

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Elizabeth P. B. Fontes

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Publications: 13

Girdhar K. Pandey

Girdhar K. Pandey

University of Delhi

Publications: 12

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Aligarh Muslim University

Publications: 12

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International Centre for Genetic Engineering and Biotechnology

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