K. Ohyama

838 total citations
23 papers, 625 citations indexed

About

K. Ohyama is a scholar working on Plant Science, Molecular Biology and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, K. Ohyama has authored 23 papers receiving a total of 625 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Plant Science, 16 papers in Molecular Biology and 6 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in K. Ohyama's work include Photosynthetic Processes and Mechanisms (7 papers), Bryophyte Studies and Records (6 papers) and Plant Genetic and Mutation Studies (6 papers). K. Ohyama is often cited by papers focused on Photosynthetic Processes and Mechanisms (7 papers), Bryophyte Studies and Records (6 papers) and Plant Genetic and Mutation Studies (6 papers). K. Ohyama collaborates with scholars based in Japan, Canada and France. K. Ohyama's co-authors include Hideya Fukuzawa, Katsuyuki T. Yamato, Takayuki Kohchi, Mizuki Takenaka, Lawrence E. Pelcher, Shohei Yamaoka, Tohru Komano, Takefumi Sone, Kazuhiko Umesono and Haruo Ozeki and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nucleic Acids Research and The EMBO Journal.

In The Last Decade

K. Ohyama

23 papers receiving 590 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
K. Ohyama Japan 16 498 341 120 42 41 23 625
Jane Aldrich United States 10 337 0.7× 229 0.7× 111 0.9× 42 1.0× 61 1.5× 14 466
Masahiro Sugiura Japan 12 656 1.3× 236 0.7× 111 0.9× 61 1.5× 51 1.2× 12 702
R. Mache France 21 776 1.6× 462 1.4× 48 0.4× 63 1.5× 101 2.5× 43 926
Masahiro Sugiura Japan 16 556 1.1× 370 1.1× 49 0.4× 18 0.4× 39 1.0× 35 696
Gabriele Schween Germany 14 526 1.1× 509 1.5× 114 0.9× 24 0.6× 36 0.9× 16 736
M. F. Conde United States 11 443 0.9× 317 0.9× 65 0.5× 23 0.5× 28 0.7× 13 565
Joachim R. Marienfeld Germany 12 1.0k 2.1× 479 1.4× 114 0.9× 18 0.4× 63 1.5× 15 1.2k
R. Hagemann Germany 10 338 0.7× 194 0.6× 102 0.8× 24 0.6× 21 0.5× 31 439
Rudolf Hagemann Germany 12 428 0.9× 264 0.8× 54 0.5× 56 1.3× 24 0.6× 22 505
G. Werz Germany 11 220 0.4× 153 0.4× 41 0.3× 84 2.0× 29 0.7× 34 381

Countries citing papers authored by K. Ohyama

Since Specialization
Citations

This map shows the geographic impact of K. Ohyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by K. Ohyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K. Ohyama more than expected).

Fields of papers citing papers by K. Ohyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. Ohyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by K. Ohyama. The network helps show where K. Ohyama may publish in the future.

Co-authorship network of co-authors of K. Ohyama

This figure shows the co-authorship network connecting the top 25 collaborators of K. Ohyama. A scholar is included among the top collaborators of K. Ohyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with K. Ohyama. K. Ohyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Nakayama, Shigeki, Mariko Fujishita, Takefumi Sone, & K. Ohyama. (2001). Additional locus of rDNA sequence specific to the X chromosome of the liverwort, Marchantia polymorpha. Chromosome Research. 9(6). 469–473. 33 indexed citations
2.
Takenaka, Mizuki, et al.. (2000). Direct transformation and plant regeneration of the haploid liverwort Marchantia polymorpha L.. Transgenic Research. 9(3). 179–185. 61 indexed citations
3.
Sone, Takefumi, Masaki Fujisawa, Mizuki Takenaka, et al.. (1999). Bryophyte 5S rDNA was inserted into 45S rDNA repeat units after the divergence from higher land plants. Plant Molecular Biology. 41(5). 679–685. 67 indexed citations
4.
Nishiyama, Ryo, Hiroshi Mizuno, Toshikazu Yamaguchi, et al.. (1999). Two mRNA Species Encoding Calcium-Dependent Protein Kinases Are Differentially Expressed in Sexual Organs of Marchantia polymorpha through Alternative Splicing. Plant and Cell Physiology. 40(2). 205–212. 28 indexed citations
5.
Kobayashi, Yasushi, Volker Knoop, Hideya Fukuzawa, Axel Brennicke, & K. Ohyama. (1997). Interorganellar gene transfer in bryophytes: the functional nad7 gene is nuclear encoded in Marchantia polymorpha. Molecular and General Genetics MGG. 256(5). 589–592. 33 indexed citations
6.
Akashi, Kinya, Mizuki Takenaka, Shohei Yamaoka, et al.. (1997). Accumulation of nuclear-encoded tRNAThr (AGU) in mitochondria of the liverwort Marchantia polymorpha. Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1350(3). 262–266. 12 indexed citations
7.
Kobayashi, Yukio, Volker Knoop, Hideya Fukuzawa, Axel Brennicke, & K. Ohyama. (1997). Interorganellar gene transfer in bryophytes: the functional. Molecular and General Genetics MGG. 256(5). 589–589. 3 indexed citations
8.
Akashi, Kinya, et al.. (1996). Occurrence of nuclear-encoded tRNAIle in mitochondria of the liverwort Marchantia polymorpha. Current Genetics. 30(2). 181–185. 17 indexed citations
9.
Katoh, Akira, et al.. (1996). cemA homologue essential to CO2 transport in the cyanobacterium Synechocystis PCC6803.. Proceedings of the National Academy of Sciences. 93(9). 4006–4010. 33 indexed citations
10.
Oda, Kenji, Katsuyuki T. Yamato, Eiji Ohta, et al.. (1992). Transfer RNA genes in the mitochondrial genome from a liverwort,Marchantia polymorpha: the absence of chloroplast-like tRNAs. Nucleic Acids Research. 20(14). 3773–3777. 35 indexed citations
11.
Yamato, Katsuyuki T., Yasuhiro Ogura, Takeshi Kanegae, Yasuyuki Yamada, & K. Ohyama. (1992). Mitochondrial genome structure of rice suspension culture from cytoplasmic male-sterile line (A-58CMS): reappraisal of the master circle. Theoretical and Applied Genetics. 83(3). 279–288. 21 indexed citations
12.
Kohchi, Takayuki, Hiromasa Shirai, Hideya Fukuzawa, et al.. (1988). Structure and organization of Marchantia olymorpha chloroplast genome. Journal of Molecular Biology. 203(2). 353–372. 54 indexed citations
13.
Kohchi, Takayuki, Takeshi Yoshida, Tohru Komano, & K. Ohyama. (1988). Divergent mRNA transcription in the chloroplast psbB operon.. The EMBO Journal. 7(4). 885–891. 47 indexed citations
14.
Umesono, Kazuhiko, et al.. (1988). Ordered processing and splicing in a polycistronic transcript in liverwort chloroplasts. Current Genetics. 14(2). 147–154. 22 indexed citations
15.
Ozeki, Haruo, K. Ohyama, Hachiro Inokuchi, et al.. (1987). Genetic System of Chloroplasts. Cold Spring Harbor Symposia on Quantitative Biology. 52(0). 791–804. 23 indexed citations
16.
Schaefer, Anne, K. Ohyama, & O. L. Gamborg. (1981). Detection by agarose gel electrophoresis of nucleases associated with cells and protoplasts from plant supension cultures using Agrobacterium tumefaciens Ti plasmid.. Agricultural and Biological Chemistry. 45(6). 1441–1445. 8 indexed citations
17.
Ohyama, K., et al.. (1977). A Rapid, Simple Method for Nuclei Isolation from Plant Protoplasts. PLANT PHYSIOLOGY. 60(2). 179–181. 20 indexed citations
18.
Ohyama, K., et al.. (1977). DNA Binding and Uptake by Nuclei Isolated from Plant Protoplasts. PLANT PHYSIOLOGY. 60(1). 98–101. 11 indexed citations
19.
Ohyama, K.. (1974). Properties of 5-bromodeoxyuridine-resistant lines of higher plant cells in liquid culture. Experimental Cell Research. 89(1). 31–38. 30 indexed citations
20.
Ohyama, K., O. L. Gamborg, & R. A. Miller. (1972). Isolation and Properties of Deoxyribonucleic Acid from Protoplasts of Cell Suspension Cultures of Ammi visnaga and Carrot (Daucus carota). PLANT PHYSIOLOGY. 50(3). 319–321. 14 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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