World's Best Scientists 2026 revealed!
Makoto Ojika

Makoto Ojika

D-Index & Metrics

Biology and Biochemistry

D-Index
50
Citations
8513
World Ranking
17679
National Ranking
1276

Makoto Ojika 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 Makoto Ojika 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: 278 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

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

Makoto Ojika 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 Makoto Ojika 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: 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

Makoto Ojika is affiliated with Nagoya University in Japan. Their research focuses primarily on Agricultural and Biological Sciences, encompassing 42 publications, alongside substantial work in Biochemistry, Genetics and Molecular Biology with 22 publications, and Medicine with 18 publications. Within these broader fields, Ojika has contributed notably to several subfields including Plant Science, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Pharmacology, and Organic Chemistry.

The main topics that define Ojika's research work include:

  • Plant-Microbe Interactions and Immunity
  • Plant Pathogens and Resistance
  • Fungal Plant Pathogen Control
  • Carbohydrate Chemistry and Synthesis
  • Microbial Natural Products and Biosynthesis
  • Plant Disease Resistance and Genetics
  • Glycosylation and Glycoproteins Research

Ojika's publication record includes research articles addressing diverse aspects of plant science and plant-pathogen relationships. Selected recent papers are:

  • Identification of ε-Poly-L-lysine as an Antimicrobial Product from an Epichloë Endophyte and Isolation of Fungal ε-PL Synthetase Gene, 2020, Molecules
  • Recognition of pathogen-derived sphingolipids in Arabidopsis, 2022, Science
  • AP2/ERF Transcription Factor NbERF-IX-33 Is Involved in the Regulation of Phytoalexin Production for the Resistance of Nicotiana benthamiana to Phytophthora infestans, 2022, Frontiers in Plant Science
  • Botrytis cinerea identifies host plants via the recognition of antifungal capsidiol to induce expression of a specific detoxification gene, 2022, PNAS Nexus
  • Botrytis cinerea tolerates phytoalexins produced by Solanaceae and Fabaceae plants through an efflux transporter BcatrB and metabolizing enzymes, 2023, Frontiers in Plant Science

Among the venues where Ojika frequently publishes are bioRxiv (Cold Spring Harbor Laboratory) with six publications, Bioorganic & Medicinal Chemistry with four, International Journal of Molecular Sciences with three, Molecules with two, and Frontiers in Plant Science with two publications.

Makoto Ojika often collaborates with other researchers in their field. Frequent co-authors include Daigo Takemoto, Aiko Tanaka, Maurizio Camagna, Ikuo Sato, and Sotaro Chiba, each contributing to multiple joint publications ranging from 10 to 15 collaborations.

Best Publications

  • Okadaic acid: an additional non-phorbol-12-tetradecanoate-13-acetate-type tumor promoter

    Masami Suganuma;Hirota Fujiki;Hiroko Suguri;Shigeru Yoshizawa

  • Structure-activity relationship within a series of okadaic acid derivatives.

    Shinji Nishiwaki;Hirota Fujiki;Masami Suganuma;Hiroko Furuya-Suguri

  • Aplyronine A, a potent antitumor substance and the congeners aplyronines B and C isolated from the sea hare Aplysia kurodai

    Kiyoyuki Yamada;Makoto Ojika;Takeshi Ishigaki;Yoshifumi Yoshida

  • Ptaquiloside, a novel norsesquiterpene glucoside from bracken, var.

    Haruki Niwa;Makoto Ojika;Kazumasa Wakamatsu;Kiyoyuki Yamada

  • Firefly luciferase is a bifunctional enzyme: ATP-dependent monooxygenase and a long chain fatty acyl-CoA synthetase.

    Yuichi Oba;Makoto Ojika;Satoshi Inouye

  • Cystothiazoles A and B, new bithiazole-type antibiotics from the myxobacterium Cystobacter fuscus.

    Makoto Ojika;Yoshihiro Suzuki;Akane Tsukamoto;Youji Sakagami

  • Ptaquiloside, the major toxin of bracken, and related terpene glycosides: chemistry, biology and ecology.

    Kiyoyuki Yamada;Makoto Ojika;Hideo Kigoshi

  • Ptaquiloside, a potent carcinogen isolated from bracken fern Pteridium aquilinum var. latiusculum: structure elucidation based on chemical and spectral evidence, and reactions with amino acids, nucleosides, and nucleotides

    Makoto Ojika;Kazumasa Wakamatsu;Haruki Niwa;Kiyoyuki Yamada

  • Aplyronine A, a Potent Antitumor Substance of Marine Origin, Aplyronines B and C, and Artificial Analogues: Total Synthesis and Structure−Cytotoxicity Relationships

    Hideo Kigoshi;Kiyotake Suenaga;Tsuyoshi Mutou;Takeshi Ishigaki

  • Dolabellin, a Cytotoxic Bisthiazole Metabolite from the Sea Hare Dolabella auricularia: Structural Determination and Synthesis

    Hiroki Sone;Takashi Kondo;Minoru Kiryu;Hiroyuki Ishiwata

  • Total Synthesis of Aplyronine A, a Potent Antitumor Substance of Marine Origin

    Hideo Kigoshi;Makoto Ojika;Takeshi Ishigaki;Kiyotake Suenaga

  • Absolute Stereochemistry of Aplyronine A, a Potent Antitumor Substance of Marine Origin

    Makoto Ojika;Hideo Kigoshi;Takeshi Ishigaki;Itaru Tsukada

  • Coffee and Caffeine Ameliorate Hyperglycemia, Fatty Liver, and Inflammatory Adipocytokine Expression in Spontaneously Diabetic KK-Ay Mice

    Rie Yamauchi;Misato Kobayashi;Yuji Matsuda;Makoto Ojika

  • Amphimic acids and related long-chain fatty acids as DNA topoisomerase I inhibitors from an Australian sponge, Amphimedon sp.: Isolation, structure, synthesis, and biological evaluation

    Takayuki Nemoto;Go Yoshino;Makoto Ojika;Youji Sakagami

  • Soft-tissue evidence for homeothermy and crypsis in a Jurassic ichthyosaur

    Johan Lindgren;Peter Sjövall;Volker Thiel;Wenxia Zheng

  • DNA damage by ptaquiloside, a potent bracken carcinogen: detection of selective strand breaks and identification of DNA cleavage products

    Tatsushi Kushida;Motonari Uesugi;Yukio Sugiura;Hideo Kigoshi

  • Termitomycesphins A–D, Novel Neuritogenic Cerebrosides from the Edible Chinese Mushroom Termitomyces albuminosus

    Jianhua Qi;Makoto Ojika;Youji Sakagami

  • Isolation and stereostructure of doliculide, a cytotoxic cyclodepsipeptide from the Japanese sea hare Dolabella auricularia

    Hiroyuki Ishiwata;Takayuki Nemoto;Makoto Ojika;Kiyoyuki Yamada

  • Cystothiazoles C-F, new bithiazole-type antibiotics from the myxobacterium Cystobacter fuscus

    Yoshihiro Suzuki;Makoto Ojika;Youji Sakagami;Ryosuke Fudou

  • Tyrosinase-catalyzed oxidation of rhododendrol produces 2-methylchromane-6,7-dione, the putative ultimate toxic metabolite: implications for melanocyte toxicity

    Shosuke Ito;Makoto Ojika;Toshiharu Yamashita;Kazumasa Wakamatsu

Frequent Co-Authors

Kiyoyuki Yamada
Kiyoyuki Yamada Nagoya University
Youji Sakagami
Youji Sakagami Nagoya University
Kazumasa Wakamatsu
Kazumasa Wakamatsu Fujita Health University
Satoshi Inouye
Satoshi Inouye JNC (Japan)
Shosuke Ito
Shosuke Ito Fujita Health University
Daigo Takemoto
Daigo Takemoto Nagoya University
Koji Uchida
Koji Uchida University of Tokyo
Hideshi Nakamura
Hideshi Nakamura Nagoya University
Koji Nakanishi
Koji Nakanishi Columbia University
Hirota Fujiki
Hirota Fujiki National Cancer Research Institute, UK

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