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D-Index & Metrics

Biology and Biochemistry

D-Index
61
Citations
17317
World Ranking
11179
National Ranking
764

Tomokazu Koshiba 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 Tomokazu Koshiba 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: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 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: 417 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: 196 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: 59 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: 144 publications — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Tomokazu Koshiba 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 Tomokazu Koshiba sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 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: 71 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: 61 D-Index — 44th percentile

44% of scientists in this discipline score the same or lower.

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

Overview

Tomokazu Koshiba is affiliated with Tokyo Metropolitan University in Japan. Their research primarily spans the fields of Agricultural and Biological Sciences as well as Biochemistry, Genetics, and Molecular Biology.

Their work focuses on subfields including Plant Science and Molecular Biology. The main topics covered in their research are Seed Germination and Physiology, Plant Tissue Culture and Regeneration, and Plant Stress Responses and Tolerance.

Koshiba's recent publication is titled Review on Biosynthesis, Signal transduction of ABA and its Function in Physiological and Metabolic Process of Crop plants, published in 2022 in the Global Journal of Agricultural Research.

  • Bewket Getachew
  • Bekele Pawe
  • Akira Endo
  • Masanori Okamoto

The Global Journal of Agricultural Research is a frequent venue for Koshiba's publications.

Best Publications

  • The Arabidopsis cytochrome P450 CYP707A encodes ABA 8′‐hydroxylases: key enzymes in ABA catabolism

    Tetsuo Kushiro;Masanori Okamoto;Kazumi Nakabayashi;Kazutoshi Yamagishi

  • Complex regulation of ABA biosynthesis in plants.

    Mitsunori Seo;Tomokazu Koshiba

  • A Unique Short-Chain Dehydrogenase/Reductase in Arabidopsis Glucose Signaling and Abscisic Acid Biosynthesis and Functions

    Wan-Hsing Cheng;Wan-Hsing Cheng;Akira Endo;Li Zhou;Jessica Penney

  • CYP707A1 and CYP707A2, Which Encode Abscisic Acid 8′-Hydroxylases, Are Indispensable for Proper Control of Seed Dormancy and Germination in Arabidopsis

    Masanori Okamoto;Ayuko Kuwahara;Mistunori Seo;Tetsuo Kushiro

  • Genome-wide profiling of stored mRNA in Arabidopsis thaliana seed germination: epigenetic and genetic regulation of transcription in seed.

    Kazumi Nakabayashi;Masanori Okamoto;Tomokazu Koshiba;Yuji Kamiya

  • The Arabidopsis aldehyde oxidase 3 (AAO3) gene product catalyzes the final step in abscisic acid biosynthesis in leaves.

    Mitsunori Seo;Anton J. M. Peeters;Hanae Koiwai;Takayuki Oritani

  • Regulation of hormone metabolism in Arabidopsis seeds: phytochrome regulation of abscisic acid metabolism and abscisic acid regulation of gibberellin metabolism

    Mitsunori Seo;Atsushi Hanada;Ayuko Kuwahara;Akira Endo

  • Identification of an abscisic acid transporter by functional screening using the receptor complex as a sensor

    Yuri Kanno;Atsushi Hanada;Yasutaka Chiba;Takanari Ichikawa

  • Biochemical analyses of indole-3-acetaldoxime-dependent auxin biosynthesis in Arabidopsis

    Satoko Sugawara;Shojiro Hishiyama;Yusuke Jikumaru;Atsushi Hanada

  • Drought Induction of Arabidopsis 9-cis-Epoxycarotenoid Dioxygenase Occurs in Vascular Parenchyma Cells

    Akira Endo;Yoshiaki Sawada;Hirokazu Takahashi;Masanori Okamoto

  • CYP707A3, a major ABA 8'-hydroxylase involved in dehydration and rehydration response in Arabidopsis thaliana.

    Taishi Umezawa;Masanori Okamoto;Tetsuo Kushiro;Eiji Nambara

  • NARROW LEAF 7 controls leaf shape mediated by auxin in rice.

    Kenji Fujino;Yasuyuki Matsuda;Kenjirou Ozawa;Takeshi Nishimura

  • NAL1 allele from a rice landrace greatly increases yield in modern indica cultivars.

    Daisuke Fujita;Kurniawan Rudi Trijatmiko;Analiza Grubanzo Tagle;Maria Veronica Sapasap

  • Disruption and overexpression of auxin response factor 8 gene of Arabidopsis affect hypocotyl elongation and root growth habit, indicating its possible involvement in auxin homeostasis in light condition.

    Chang‐en Tian;Hideki Muto;Kanako Higuchi;Tomoyuki Matamura

  • AtSWEET13 and AtSWEET14 regulate gibberellin-mediated physiological processes

    Yuri Kanno;Takaya Oikawa;Yasutaka Chiba;Yasuhiro Ishimaru

  • Tissue-Specific Localization of an Abscisic Acid Biosynthetic Enzyme, AAO3, in Arabidopsis

    Hanae Koiwai;Kentaro Nakaminami;Mitsunori Seo;Wataru Mitsuhashi

  • Brassinolide Induces IAA5, IAA19, and DR5, a Synthetic Auxin Response Element in Arabidopsis, Implying a Cross Talk Point of Brassinosteroid and Auxin Signaling

    Ayako Nakamura;Kanako Higuchi;Hideki Goda;Makoto T. Fujiwara

  • Identification of Arabidopsis thaliana NRT1/PTR FAMILY (NPF) proteins capable of transporting plant hormones.

    Yasutaka Chiba;Takafumi Shimizu;Shinya Miyakawa;Yuri Kanno

  • Abscisic aldehyde oxidase in leaves of Arabidopsis thaliana

    Mitsunori Seo;Hanae Koiwai;Shuichi Akaba;Teruya Komano

  • Comparative studies on the Arabidopsis aldehyde oxidase (AAO) gene family revealed a major role of AAO3 in ABA biosynthesis in seeds.

    Mitsunori Seo;Hiroyuki Aoki;Hanae Koiwai;Yuji Kamiya

Frequent Co-Authors

Yuji Kamiya
Yuji Kamiya RIKEN Center for Sustainable Resource Science
Eiji Nambara
Eiji Nambara University of Toronto
Shinichiro Sawa
Shinichiro Sawa Kumamoto University
Setsuko Komatsu
Setsuko Komatsu Fukui University of Technology
Tatsuya Sakai
Tatsuya Sakai Niigata University
Ken-ichiro Hayashi
Ken-ichiro Hayashi Okayama University of Science
Annie Marion-Poll
Annie Marion-Poll University of Paris-Saclay
Koji Takio
Koji Takio University of Washington
Yuri Kanno
Yuri Kanno RIKEN Center for Sustainable Resource Science

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