World's Best Scientists 2026 revealed!
Hiroshi Kouchi

Hiroshi Kouchi

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D-Index & Metrics

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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 53 1789 1641 57 57 180 10656

Hiroshi Kouchi publications per year

The chart shows the history of publications by Hiroshi Kouchi between 1975 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hiroshi Kouchi published across 50 years, from 1975 to 2024, averaging 3.9 papers a year. Output peaked at 14 publications in 2000. 5 of the 194 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1975 to 2024. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2000. 1975: 2 publications 1976: 1 publication 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 2 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 2 publications 1985: 6 publications 1986: 3 publications 1987: 4 publications 1988: 4 publications 1989: 2 publications 1990: 3 publications 1991: 5 publications 1992: 6 publications 1993: 5 publications 1994: 3 publications 1995: 9 publications 1996: 6 publications 1997: 12 publications 1998: 7 publications 1999: 7 publications 2000: 14 publications 2001: 12 publications 2002: 8 publications 2003: 8 publications 2004: 5 publications 2005: 4 publications 2006: 11 publications 2007: 6 publications 2008: 4 publications 2009: 4 publications 2010: 5 publications 2011: 2 publications 2012: 4 publications 2013: 3 publications 2014: 4 publications 2015: 2 publications 2016: 2 publications 2017: 0 publications 2018: 1 publication 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 0 publications 2023: 4 publications 2024: 1 publication
1975 2024

194 publications in total across all disciplines

View publications per year as a table
Hiroshi Kouchi: publications per year, 1975 to 2024
Year Publications
1975 2
1976 1
1977 1
1978 0
1979 0
1980 2
1981 0
1982 0
1983 0
1984 2
1985 6
1986 3
1987 4
1988 4
1989 2
1990 3
1991 5
1992 6
1993 5
1994 3
1995 9
1996 6
1997 12
1998 7
1999 7
2000 14
2001 12
2002 8
2003 8
2004 5
2005 4
2006 11
2007 6
2008 4
2009 4
2010 5
2011 2
2012 4
2013 3
2014 4
2015 2
2016 2
2017 0
2018 1
2019 0
2020 0
2021 0
2022 0
2023 4
2024 1
Total 194
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Hiroshi Kouchi publications per year - data summary

  • Hiroshi Kouchi, a Plant Science and Agronomy scholar from International Christian University, has 194 publications recorded across 50 years, from 1975 to 2024.
  • The oldest publication on record dates to 1975 and the most recent to 2024.
  • The most productive year is 2000, with 14 publications.
  • The least productive years with any output are 1976, 1977, 2018 and 2024, with 1 publication each.
  • 10 of the 50 years in the span carry no publications at all (1978, 1979, 1981, 1982 and others).
  • The rate of publication averages 3.9 papers per year over the whole span, or 4.8 per year counting only the 40 years with at least one publication.
  • The last 5 years on the chart (2020-2024) hold 5 publications, 3% of the career total.
  • Split into equal eras - 1975-1991: 35 publications (2.1 per year); 1992-2008: 127 publications (7.5 per year); 2009-2024: 32 publications (2.0 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Hiroshi Kouchi 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 Hiroshi Kouchi 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, 176–180 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: 180 publications — 71st percentile

71% 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
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
176–180 126 180
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
Download as CSV

Hiroshi Kouchi publication distribution in Plant Science and Agronomy in 2026 - data summary

  • The chart plots the publication count of all 6,494 Plant Science and Agronomy scientists ranked by Research.com in 2026, grouped into 88 ranges running from 36–40 to 467+ publications.
  • Hiroshi Kouchi, a Plant Science and Agronomy scholar from International Christian University, records 180 publications - the 71st percentile of the discipline.
  • 71% of ranked Plant Science and Agronomy scientists score the same or lower than Hiroshi Kouchi, and about 29% score higher.
  • The median of the discipline falls in the 136–140 publications range, and Hiroshi Kouchi ranks above the median.
  • The most crowded range is 111–115 publications, holding 255 scientists (4% of the field).
  • 55% of the field sits in the lowest quarter of the value range (up to 141–145 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 467 publications or more, 99 scientists in all (2% of the field).

Hiroshi Kouchi 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 Hiroshi Kouchi 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, 53 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: 53 D-Index — 73rd percentile

73% 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
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102 53
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
Download as CSV

Hiroshi Kouchi D-index placement in Plant Science and Agronomy in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 6,494 Plant Science and Agronomy scientists ranked by Research.com in 2026, grouped into 80 ranges running from 30 to 109+ D-Index.
  • Hiroshi Kouchi, a Plant Science and Agronomy scholar from International Christian University, records 53 D-Index - the 73rd percentile of the discipline.
  • 73% of ranked Plant Science and Agronomy scientists score the same or lower than Hiroshi Kouchi, and about 27% score higher.
  • The median of the discipline falls in the 43 D-Index range, and Hiroshi Kouchi ranks above the median.
  • The most crowded range is 34 D-Index, holding 288 scientists (4% of the field).
  • 66% of the field sits in the lowest quarter of the value range (up to 49 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 109 D-Index or more, 99 scientists in all (2% of the field).

Best Publications

  • Isolation and characterization of novel nodulin cDNAs representing genes expressed at early stages of soybean nodule development

    Hiroshi Kouchi;Shingo Hata

  • HAR1 mediates systemic regulation of symbiotic organ development

    Rieko Nishimura;Masaki Hayashi;Guo-Jiang Wu;Guo-Jiang Wu;Hiroshi Kouchi

  • Deregulation of a Ca2+/calmodulin-dependent kinase leads to spontaneous nodule development.

    Leïla Tirichine;Haruko Imaizumi-Anraku;Satoko Yoshida;Yasuhiro Murakami

  • Plastid proteins crucial for symbiotic fungal and bacterial entry into plant roots

    Haruko Imaizumi-Anraku;Naoya Takeda;Myriam Charpentier;Myriam Charpentier;Jillian Perry

  • NUCLEOPORIN85 is required for calcium spiking, fungal and bacterial symbioses, and seed production in Lotus japonicus.

    Katsuharu Saito;Makoto Yoshikawa;Koji Yano;Hiroki Miwa

  • NODULE INCEPTION Directly Targets NF-Y Subunit Genes to Regulate Essential Processes of Root Nodule Development in Lotus japonicus

    Takashi Soyano;Hiroshi Kouchi;Atsuko Hirota;Makoto Hayashi

  • Plant cyclins: a unified nomenclature for plant A-, B- and D-type cyclins based on sequence organization.

    Jean Pierre Renaudin;John H. Doonan;Donna Freeman;Junji Hashimoto

  • How many peas in a pod? Legume genes responsible for mutualistic symbioses underground.

    Hiroshi Kouchi;Haruko Imaizumi-Anraku;Makoto Hayashi;Tsuneo Hakoyama

  • Large-scale analysis of gene expression profiles during early stages of root nodule formation in a model legume, Lotus japonicus.

    Hiroshi Kouchi;Kenshiro Shimomura;Shingo Hata;Atsuko Hirota

  • Gene silencing by expression of hairpin RNA in Lotus japonicus roots and root nodules.

    Hirotaka Kumagai;Hiroshi Kouchi

  • From defense to symbiosis: limited alterations in the kinase domain of LysM receptor‐like kinases are crucial for evolution of legume–Rhizobium symbiosis

    Tomomi Nakagawa;Hanae Kaku;Yoshikazu Shimoda;Akifumi Sugiyama

  • Rice ENOD40: isolation and expression analysis in rice and transgenic soybean root nodules

    Hiroshi Kouchi;Ken-ichi Takane;Rollando B.. So;Jagdish K.. Ladha

  • A dominant function of CCaMK in intracellular accommodation of bacterial and fungal endosymbionts

    Teruyuki Hayashi;Mari Banba;Yoshikazu Shimoda;Hiroshi Kouchi

  • Positional Cloning Identifies Lotus japonicus NSP2, A Putative Transcription Factor of the GRAS Family, Required for NIN and ENOD40 Gene Expression in Nodule Initiation

    Yasuhiro Murakami;Hiroki Miwa;Haruko Imaizumi-Anraku;Hiroshi Kouchi

  • Expression of the early nodulin, ENOD40, in soybean roots in response to various lipo‐chitin signal molecules

    Eiichi Minami;Hiroshi Kouchi;Jonathan R. Cohn;Tomoya Ogawa

  • A supernodulating mutant isolated from soybean cultivar enrei

    Shoichiro Akao;Hiroshi Kouchi

  • Too much love, a root regulator associated with the long-distance control of nodulation in Lotus japonicus.

    Shimpei Magori;Erika Oka-Kira;Satoshi Shibata;Yosuke Umehara

  • Divergence of Evolutionary Ways Among Common sym Genes : CASTOR and CCaMK Show Functional Conservation Between Two Symbiosis Systems and Constitute the Root of a Common Signaling Pathway

    Mari Banba;Caroline Gutjahr;Akio Miyao;Hirohiko Hirochika

  • Isolation and characterization of cDNA clones for plant cyclins.

    Unknown

  • The AtVAM3 Encodes a Syntaxin-related Molecule Implicated in the Vacuolar Assembly in Arabidopsis thaliana

    Masa H. Sato;Norihiro Nakamura;Yoshinori Ohsumi;Hiroshi Kouchi

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