Ryoma Kamikawa

3.6k total citations · 2 hit papers
75 papers, 2.1k citations indexed

About

Ryoma Kamikawa is a scholar working on Molecular Biology, Ecology and Environmental Chemistry. According to data from OpenAlex, Ryoma Kamikawa has authored 75 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Molecular Biology, 45 papers in Ecology and 10 papers in Environmental Chemistry. Recurrent topics in Ryoma Kamikawa's work include Microbial Community Ecology and Physiology (42 papers), Protist diversity and phylogeny (41 papers) and Genomics and Phylogenetic Studies (41 papers). Ryoma Kamikawa is often cited by papers focused on Microbial Community Ecology and Physiology (42 papers), Protist diversity and phylogeny (41 papers) and Genomics and Phylogenetic Studies (41 papers). Ryoma Kamikawa collaborates with scholars based in Japan, Canada and United States. Ryoma Kamikawa's co-authors include Andrew J. Roger, Sergio A. Muñoz-Gómez, Yuji Inagaki, Yoshihiko Sako, Tetsuo Hashimoto, Hideaki Miyashita, Goro Tanifuji, Akinori Yabuki, Takashi Yoshida and Takuro Nakayama and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Ryoma Kamikawa

71 papers receiving 2.1k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The Origin and Diversification of Mitochondria

2017 707 citations Andrew J. Roger, Ryoma Kamikawa et al. profile →
A robustly rooted tree of eukaryotes reveals their excavate ancestry

2025 23 citations Laura Eme, Ryoma Kamikawa et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryoma Kamikawa Japan	24	1.6k	884	221	196	163	75	2.1k
Cristina Miceli Italy	28	1.4k 0.9×	690 0.8×	211 1.0×	119 0.6×	237 1.5×	98	2.2k
Jie Xiong China	27	1.5k 0.9×	620 0.7×	72 0.3×	93 0.5×	237 1.5×	90	2.2k
Eunsoo Kim United States	26	1.2k 0.8×	778 0.9×	265 1.2×	54 0.3×	370 2.3×	85	1.9k
Markus B. Schilhabel Germany	19	725 0.5×	453 0.5×	367 1.7×	63 0.3×	111 0.7×	34	1.7k
Tsvetan R. Bachvaroff United States	29	1.4k 0.9×	1.1k 1.2×	737 3.3×	606 3.1×	195 1.2×	64	2.3k
Sheila Podell United States	32	1.6k 1.0×	1.1k 1.2×	198 0.9×	289 1.5×	295 1.8×	50	2.9k
Stefan Mikkat Germany	25	1.1k 0.7×	340 0.4×	291 1.3×	406 2.1×	246 1.5×	61	2.2k
Dongying Wu China	27	1.5k 0.9×	805 0.9×	161 0.7×	183 0.9×	490 3.0×	63	2.8k
Harald R. Gruber‐Vodicka Germany	23	715 0.5×	1.0k 1.2×	442 2.0×	347 1.8×	170 1.0×	44	1.8k
Marie‐Odile Soyer‐Gobillard France	21	799 0.5×	413 0.5×	207 0.9×	219 1.1×	99 0.6×	69	1.2k

Countries citing papers authored by Ryoma Kamikawa

Since Specialization

Citations

This map shows the geographic impact of Ryoma Kamikawa'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 Ryoma Kamikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryoma Kamikawa more than expected).

Fields of papers citing papers by Ryoma Kamikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryoma Kamikawa. 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 Ryoma Kamikawa. The network helps show where Ryoma Kamikawa may publish in the future.

Co-authorship network of co-authors of Ryoma Kamikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoma Kamikawa. A scholar is included among the top collaborators of Ryoma Kamikawa 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 Ryoma Kamikawa. Ryoma Kamikawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Deguchi, Ryusaku, et al.. (2025). Positive Selection of a Starch Synthesis Gene and Phenotypic Differentiation of Starch Accumulation in Symbiotic and Free-Living Coral Symbiont Dinoflagellate Species. Genome Biology and Evolution. 17(7).

Shiratori, Takashi, et al.. (2025). Complete Mitochondrial Genomes of Ancyromonads Provide Clues for the Gene Content and Genome Structures of Ancestral Mitochondria. Journal of Eukaryotic Microbiology. 72(3). e70012–e70012.

Sumida, Tomomi, et al.. (2025). Impact of acetate on CO2 fixation pathways in thermophilic and hydrogenotrophic bacteria. ISME Communications. 5(1). ycaf227–ycaf227.

Inoue, Masao, et al.. (2025). Effects of Nitrate on Hydrogenogenic Carbon Monoxide Oxidation in Parageobacillus thermoglucosidasius. Environmental Microbiology Reports. 17(3). e70133–e70133. 1 indexed citations

Tominaga, Kento, et al.. (2024). Taxonomic difference in marine bloom-forming phytoplanktonic species affects the dynamics of both bloom-responding prokaryotes and prokaryotic viruses. mSystems. 9(4). e0094923–e0094923. 1 indexed citations

Kamikawa, Ryoma, et al.. (2024). Phylogenetic diversity of putative nickel-containing carbon monoxide dehydrogenase-encoding prokaryotes in the human gut microbiome. Microbial Genomics. 10(8). 2 indexed citations

Tominaga, Kento, et al.. (2023). Population‐level prokaryotic community structures associated with ferromanganese nodules in the Clarion‐Clipperton Zone (Pacific Ocean) revealed by 16S rRNA gene amplicon sequencing. Environmental Microbiology Reports. 16(1). e13224–e13224. 1 indexed citations

Omae, Kimiho, et al.. (2023). Construction of multiple metagenome assembled genomes containing carbon monoxide dehydrogenases from anaerobic carbon monoxide enrichment cultures. Archives of Microbiology. 205(8). 292–292. 2 indexed citations

Tanifuji, Goro, Takuro Nakayama, Ryoma Kamikawa, et al.. (2020). Dinoflagellates with relic endosymbiont nuclei as models for elucidating organellogenesis. Proceedings of the National Academy of Sciences. 117(10). 5364–5375. 31 indexed citations

10.

Maciszewski, Kacper, et al.. (2020). Highly Reduced Plastid Genomes of the Non-photosynthetic Dictyochophyceans Pteridomonas spp. (Ochrophyta, SAR) Are Retained for tRNA-Glu-Based Organellar Heme Biosynthesis. Frontiers in Plant Science. 11. 602455–602455. 13 indexed citations

11.

Tanifuji, Goro, Ryoma Kamikawa, Naoko T. Onodera, et al.. (2020). Comparative Plastid Genomics of Cryptomonas Species Reveals Fine-Scale Genomic Responses to Loss of Photosynthesis. Genome Biology and Evolution. 12(2). 3926–3937. 14 indexed citations

12.

Kamikawa, Ryoma, et al.. (2018). Diversity of Organellar Genomes in Non-photosynthetic Diatoms. Protist. 169(3). 351–361. 20 indexed citations

13.

Cenci, Ugo, Shannon J. Sibbald, Bruce A. Curtis, et al.. (2018). Nuclear genome sequence of the plastid-lacking cryptomonad Goniomonas avonlea provides insights into the evolution of secondary plastids. BMC Biology. 16(1). 137–137. 36 indexed citations

14.

Nishimura, Yuki, Goro Tanifuji, Ryoma Kamikawa, et al.. (2016). Mitochondrial Genome ofPalpitomonas bilix: Derived Genome Structure and Ancestral System for CytochromecMaturation. Genome Biology and Evolution. 8(10). 3090–3098. 16 indexed citations

15.

Kamikawa, Ryoma, Goro Tanifuji, Masanobu Kawachi, et al.. (2015). Plastid Genome-Based Phylogeny Pinpointed the Origin of the Green-Colored Plastid in the Dinoflagellate Lepidodinium chlorophorum. Genome Biology and Evolution. 7(4). 1133–1140. 34 indexed citations

16.

Nakayama, Takuro, Ryoma Kamikawa, Goro Tanifuji, et al.. (2014). Complete genome of a nonphotosynthetic cyanobacterium in a diatom reveals recent adaptations to an intracellular lifestyle. Proceedings of the National Academy of Sciences. 111(31). 11407–11412. 80 indexed citations

17.

Yoshida, Takashi, et al.. (2010). The Distribution of a Phage-Related Insertion Sequence Element in the Cyanobacterium, Microcystis aeruginosa. Microbes and Environments. 25(4). 295–301. 11 indexed citations

18.

Masuda, Isao, et al.. (2010). Mitochondrial genomes from two red tide forming raphidophycean algae Heterosigma akashiwo and Chattonella marina var. marina. Harmful Algae. 10(2). 130–137. 9 indexed citations

19.

Kamikawa, Ryoma, Gabino Sanchez‐Perez, Yoshihiko Sako, Andrew J. Roger, & Yuji Inagaki. (2009). Expanded phylogenies of canonical and non-canonical types of methionine adenosyltransferase reveal a complex history of these gene families in eukaryotes. Molecular Phylogenetics and Evolution. 53(2). 565–570. 8 indexed citations

20.

Kamikawa, Ryoma & Yoshihiko Sako. (2007). Real-time PCR assay for monitoring harmful algae in aquatic environments. NIPPON SUISAN GAKKAISHI. 73(2). 299–301. 2 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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