World's Best Scientists 2026 revealed!
Rika Ozawa

Rika Ozawa

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 42 3445 3217 133 130 108 7217

Rika Ozawa publications per year

The chart shows the history of publications by Rika Ozawa between 1993 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Rika Ozawa published across 34 years, from 1993 to 2026, averaging 3.3 papers a year. Output peaked at 9 publications in 2013. 5 of the 113 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1993 to 2026. Vertical axis: number of publications, 0 to 9. Peak 9 publications in 2013. 1993: 1 publication 1994: 0 publications 1995: 3 publications 1996: 3 publications 1997: 0 publications 1998: 0 publications 1999: 1 publication 2000: 4 publications 2001: 2 publications 2002: 2 publications 2003: 3 publications 2004: 4 publications 2005: 2 publications 2006: 7 publications 2007: 2 publications 2008: 3 publications 2009: 3 publications 2010: 4 publications 2011: 7 publications 2012: 7 publications 2013: 9 publications 2014: 4 publications 2015: 4 publications 2016: 4 publications 2017: 3 publications 2018: 6 publications 2019: 6 publications 2020: 1 publication 2021: 3 publications 2022: 3 publications 2023: 4 publications 2024: 3 publications 2025: 4 publications 2026: 1 publication
1993 2026

113 publications in total across all disciplines

View publications per year as a table
Rika Ozawa: publications per year, 1993 to 2026
Year Publications
1993 1
1994 0
1995 3
1996 3
1997 0
1998 0
1999 1
2000 4
2001 2
2002 2
2003 3
2004 4
2005 2
2006 7
2007 2
2008 3
2009 3
2010 4
2011 7
2012 7
2013 9
2014 4
2015 4
2016 4
2017 3
2018 6
2019 6
2020 1
2021 3
2022 3
2023 4
2024 3
2025 4
2026 1
Total 113
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Rika Ozawa 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 Rika Ozawa sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 106–110 publications, is where this scientist sits. 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
36–40 publications 467+

This scientist: 108 publications — 30th percentile

30% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247 108
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Rika Ozawa 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 Rika Ozawa sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 42 D-Index, is where this scientist sits. 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: 42 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228 42
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Overview

What is she best known for?

The fields of study she is best known for:

  • Botany
  • Enzyme
  • Gene

Her scientific interests lie mostly in Botany, Tetranychus urticae, Herbivore, Green leaf volatiles and Jasmonic acid. The Botany study combines topics in areas such as Arabidopsis thaliana, Jasmonate and Biochemistry. Her research investigates the connection with Tetranychus urticae and areas like Acariformes which intersect with concerns in Biological pest control.

Her biological study spans a wide range of topics, including Brassica, Plant defense against herbivory and Cotesia glomerata. Rika Ozawa combines subjects such as Arabidopsis, Transformation and Odor with her study of Green leaf volatiles. Her Jasmonic acid study combines topics from a wide range of disciplines, such as Methyl salicylate and Regulation of gene expression.

Her most cited work include:

  • Herbivory-induced volatiles elicit defence genes in lima bean leaves. (572 citations)
  • Involvement of Jasmonate- and Salicylate-Related Signaling Pathways for the Production of Specific Herbivore-Induced Volatiles in Plants (233 citations)
  • Changing green leaf volatile biosynthesis in plants: An approach for improving plant resistance against both herbivores and pathogens (218 citations)

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

Rika Ozawa focuses on Botany, Herbivore, Tetranychus urticae, Jasmonic acid and Biochemistry. Her Botany research is multidisciplinary, relying on both Spider and Arabidopsis. The Arabidopsis study combines topics in areas such as Botrytis cinerea and Arabidopsis thaliana.

Rika Ozawa studied Herbivore and Plant defense against herbivory that intersect with Elicitor. Her Tetranychus urticae research is multidisciplinary, relying on both Phytoseiidae, Acariformes, Predation and Olfactometer. The concepts of her Jasmonic acid study are interwoven with issues in Methyl salicylate, Methyl jasmonate, Biological pest control and Microbiology.

She most often published in these fields:

  • Botany (65.17%)
  • Herbivore (22.47%)
  • Tetranychus urticae (17.98%)

What were the highlights of her more recent work (between 2016-2020)?

  • Botany (65.17%)
  • Horticulture (12.36%)
  • Plant defense against herbivory (7.87%)

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

The scientist’s investigation covers issues in Botany, Horticulture, Plant defense against herbivory, Larva and Host. Rika Ozawa merges Botany with Angelica acutiloba in her research. Her research on Horticulture also deals with topics like

  • Integrated pest management which intersects with area such as Crop, Predator, Mite, Limonene and Spider,
  • Spodoptera litura that intertwine with fields like Biological pest control, Animal ecology and Infestation.

Her Plant defense against herbivory research incorporates themes from Insect, Resistance and White. Her Solidago altissima course of study focuses on Isoflavones and Herbivore. Her Cotesia vestalis research incorporates elements of Arabidopsis thaliana, Arabidopsis, Mutant, Reductase and Plant physiology.

Between 2016 and 2020, her most popular works were:

  • Tetranins: new putative spider mite elicitors of host plant defense (13 citations)
  • Identification of a Hexenal Reductase That Modulates the Composition of Green Leaf Volatiles. (12 citations)
  • Experience of plant infestation by the omnivorous arthropod Nesidiocoris tenuis affects its subsequent responses to prey-infested plant volatiles (12 citations)

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

  • Botany
  • Enzyme
  • Gene

Botany, Green leaf volatiles, Plant defense against herbivory, Tachinidae and Behavioral response are her primary areas of study. Her Olfactometer research extends to Botany, which is thematically connected. She interconnects Predation, Biological pest control, Horticulture, Animal ecology and Cutworm in the investigation of issues within Olfactometer.

Her Tachinidae research includes themes of Terpenoid and Enzyme. Her work in Tetranychus urticae tackles topics such as Spider mite which are related to areas like Jasmonate. The study incorporates disciplines such as Arabidopsis thaliana, Arabidopsis, Mutant, Reductase and Plant physiology in addition to Cotesia vestalis.

Best Publications

  • Herbivory-induced volatiles elicit defence genes in lima bean leaves.

    Gen-ichiro Arimura;Rika Ozawa;Takeshi Shimoda;Takaaki Nishioka

  • Involvement of Jasmonate- and Salicylate-Related Signaling Pathways for the Production of Specific Herbivore-Induced Volatiles in Plants

    Rika Ozawa;Gen Ichiro Arimura;Junji Takabayashi;Takeshi Shimoda

  • Changing green leaf volatile biosynthesis in plants: An approach for improving plant resistance against both herbivores and pathogens

    Kaori Shiojiri;Kyutaro Kishimoto;Rika Ozawa;Soichi Kugimiya

  • Volatile C6-aldehydes and Allo-ocimene activate defense genes and induce resistance against Botrytis cinerea in Arabidopsis thaliana.

    Kyutaro Kishimoto;Kenji Matsui;Rika Ozawa;Junji Takabayashi

  • Herbivore-induced volatiles induce the emission of ethylene in neighboring lima bean plants.

    Gen-ichiro Arimura;Rika Ozawa;Takaaki Nishioka;Wilhelm Boland

  • Herbivore-induced defense response in a model legume. Two-spotted spider mites induce emission of (E)-beta-ocimene and transcript accumulation of (E)-beta-ocimene synthase in Lotus japonicus.

    Gen-ichiro Arimura;Rika Ozawa;Soichi Kugimiya;Junji Takabayashi

  • Intake and transformation to a glycoside of (Z)-3-hexenol from infested neighbors reveals a mode of plant odor reception and defense

    Koichi Sugimoto;Koichi Sugimoto;Kenji Matsui;Yoko Iijima;Yoshihiko Akakabe

  • Plant–plant interactions mediated by volatiles emitted from plants infested by spider mites

    Gen-ichiro Arimura;Rika Ozawa;Jun-ichiro Horiuchi;Takaaki Nishioka

  • Volatile 1-octen-3-ol induces a defensive response in Arabidopsis thaliana

    Kyutaro Kishimoto;Kenji Matsui;Rika Ozawa;Junji Takabayashi

  • Recent Advances in Plant Early Signaling in Response to Herbivory

    Gen Ichiro Arimura;Rika Ozawa;Massimo E. Maffei

  • Differential metabolisms of green leaf volatiles in injured and intact parts of a wounded leaf meet distinct ecophysiological requirements.

    Kenji Matsui;Kohichi Sugimoto;Kohichi Sugimoto;Jun'ichi Mano;Rika Ozawa

  • Identification of receptors of main sex-pheromone components of three Lepidopteran species.

    Hidefumi Mitsuno;Takeshi Sakurai;Masatoshi Murai;Tetsuya Yasuda

  • Herbivore-Specific, Density-Dependent Induction of Plant Volatiles: Honest or “Cry Wolf” Signals?

    Kaori Shiojiri;Rika Ozawa;Soichi Kugimiya;Masayoshi Uefune

  • Direct fungicidal activities of C6-aldehydes are important constituents for defense responses in Arabidopsis against Botrytis cinerea.

    Kyutaro Kishimoto;Kenji Matsui;Rika Ozawa;Junji Takabayashi

  • Gene responses in bean leaves induced by herbivory and by herbivore-induced volatiles.

    Gen ichiro Arimura;Kosuke Tashiro;Satoru Kuhara;Takaaki Nishioka

  • Plasma membrane potential depolarization and cytosolic calcium flux are early events involved in tomato (Solanum lycopersicon) plant-to-plant communication☆

    Simon A. Zebelo;Kenji Matsui;Rika Ozawa;Massimo E. Maffei

  • A comparison of the responses of Tetranychus urticae (Acari : Tetranychidae) and Phytoseiulus persimilis (Acari : Phytoseiidae) to volatiles emitted from lima bean leaves with different levels of damage made by T. urticae or Spodoptera exigua (Lepidoptera : Noctuidae)

    Jun Ichiro Horiuchi;Gen Ichiro Arimura;Rika Ozawa;Takeshi Shimoda

  • Components of C6-aldehyde-induced resistance in Arabidopsis thaliana against a necrotrophic fungal pathogen, Botrytis cinerea

    Kyutaro Kishimoto;Kenji Matsui;Rika Ozawa;Junji Takabayashi

  • Analysis of defensive responses activated by volatile allo-ocimene treatment in Arabidopsis thaliana

    Kyutaro Kishimoto;Kenji Matsui;Rika Ozawa;Junji Takabayashi

  • Exposure of Lima Bean Leaves to Volatiles from Herbivore-Induced Conspecific Plants Results in Emission of Carnivore Attractants: Active or Passive Process?

    Yasuyuki Choh;Takeshi Shimoda;Rika Ozawa;Marcel Dicke

Frequent Co-Authors

Junji Takabayashi
Junji Takabayashi Kyoto University
Gen-ichiro Arimura
Gen-ichiro Arimura Tokyo University of Science
Kenji Matsui
Kenji Matsui Yamaguchi University
Takaaki Nishioka
Takaaki Nishioka Kyoto University
Massimo Maffei
Massimo Maffei University of Turin
Maurice W. Sabelis
Maurice W. Sabelis University of Amsterdam
Kazuya Akimitsu
Kazuya Akimitsu Kagawa University
Wilhelm Boland
Wilhelm Boland Max Planck Society
Toshiyuki Ohnishi
Toshiyuki Ohnishi Shizuoka University
Marcel Dicke
Marcel Dicke Wageningen University & Research

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