Martina Rueffer

939 total citations
24 papers, 600 citations indexed

About

Martina Rueffer is a scholar working on Pharmacology, Molecular Biology and Pharmacology. According to data from OpenAlex, Martina Rueffer has authored 24 papers receiving a total of 600 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Pharmacology, 17 papers in Molecular Biology and 8 papers in Pharmacology. Recurrent topics in Martina Rueffer's work include Berberine and alkaloids research (16 papers), Plant tissue culture and regeneration (8 papers) and Alkaloids: synthesis and pharmacology (7 papers). Martina Rueffer is often cited by papers focused on Berberine and alkaloids research (16 papers), Plant tissue culture and regeneration (8 papers) and Alkaloids: synthesis and pharmacology (7 papers). Martina Rueffer collaborates with scholars based in Germany, Japan and France. Martina Rueffer's co-authors include Meinhart H. Zenk, Naotaka Nagakura, N. Nagakura, Manfred Amann, H. El–Shagi, Yoshinori Asakawa, Brigitte Deus‐Neumann, Minoru Tabata, Gerhard Wanner and Joachim Stöckigt and has published in prestigious journals such as Journal of the American Chemical Society, FEBS Letters and Phytochemistry.

In The Last Decade

Martina Rueffer

24 papers receiving 569 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Martina Rueffer Germany 16 421 319 190 149 125 24 600
Nailish Samanani Canada 9 378 0.9× 332 1.0× 164 0.9× 172 1.2× 166 1.3× 10 596
Robert H. Burnell Canada 14 183 0.4× 194 0.6× 102 0.5× 257 1.7× 79 0.6× 59 490
Dewan S. Bhakuni India 12 169 0.4× 116 0.4× 115 0.6× 141 0.9× 107 0.9× 50 405
R. M. LETCHER Hong Kong 13 188 0.4× 157 0.5× 204 1.1× 201 1.3× 36 0.3× 47 561
Hisao Shibata Japan 14 241 0.6× 245 0.8× 120 0.6× 147 1.0× 49 0.4× 43 485
Nobuhiro Ikezawa Japan 10 703 1.7× 501 1.6× 192 1.0× 210 1.4× 229 1.8× 13 1.0k
Benjamin Lallemand Belgium 13 590 1.4× 128 0.4× 462 2.4× 216 1.4× 188 1.5× 17 936
Guo‐Jun Xu China 15 354 0.8× 104 0.3× 181 1.0× 60 0.4× 92 0.7× 22 482
Lee-Juian Lin United States 14 233 0.6× 95 0.3× 158 0.8× 76 0.5× 49 0.4× 19 401
Yu‐Shia Cheng Taiwan 17 587 1.4× 87 0.3× 183 1.0× 188 1.3× 34 0.3× 32 778

Countries citing papers authored by Martina Rueffer

Since Specialization
Citations

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

Fields of papers citing papers by Martina Rueffer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Martina Rueffer

This figure shows the co-authorship network connecting the top 25 collaborators of Martina Rueffer. A scholar is included among the top collaborators of Martina Rueffer 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 Martina Rueffer. Martina Rueffer 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.
Rueffer, Martina, et al.. (1999). Cytochromes P-450 catalyze the formation of marchantins A and C in Marchantia polymorpha. Phytochemistry. 52(7). 1195–1202. 43 indexed citations
2.
Rueffer, Martina & Meinhart H. Zenk. (1998). Microsome‐mediated transformation of O‐methylandrocymbine to demecolcine and colchicine. FEBS Letters. 438(1-2). 111–113. 11 indexed citations
3.
Rueffer, Martina, et al.. (1996). Cytochrome P-450-dependent formation of isoandrocymbine from autumnaline in colchicine biosynthesis. Tetrahedron Letters. 37(45). 8161–8164. 25 indexed citations
4.
Frenzel, Thomas, Martina Rueffer, Motomasa Kobayashi, et al.. (1995). Cryptic stereochemistry of berberine alkaloid biosynthesis. Journal of the American Chemical Society. 117(5). 1533–1545. 36 indexed citations
5.
Rueffer, Martina, Wolfgang Bauer, & Meinhart H. Zenk. (1994). The formation of corydaline and related alkaloids in Corydalis cava in vivo and in vitro. Canadian Journal of Chemistry. 72(1). 170–175. 10 indexed citations
6.
Rueffer, Martina & Meinhart H. Zenk. (1994). Canadine synthase from Thalictrum tuberosum cell cultures catalyses the formation of the methylenedioxy bridge in berberine synthesis. Phytochemistry. 36(5). 1219–1223. 36 indexed citations
7.
Rueffer, Martina, et al.. (1988). Alternative final steps in berberine biosynthesis in Coptis japonica cell cultures. Plant Cell Reports. 7(1). 1–4. 41 indexed citations
8.
Rueffer, Martina & Meinhart H. Zenk. (1987). Enzymatic formation of protopines by a microsomal cytochrome P-450 system of. Tetrahedron Letters. 28(44). 5307–5310. 42 indexed citations
9.
Rueffer, Martina & Meinhart H. Zenk. (1987). Distant Precursors of Benzylisoquinoline Alkaloids and their Enzymatic Formation. Zeitschrift für Naturforschung C. 42(4). 319–332. 56 indexed citations
10.
Rueffer, Martina, Manfred Amann, & Meinhart H. Zenk. (1986). S-Adenosyl-l-methionine: Columbamine-O-methyl transferase, a compartmentalized enzyme in protoberberine biosynthesis. Plant Cell Reports. 5(3). 182–185. 16 indexed citations
11.
12.
13.
Rueffer, Martina & Meinhart H. Zenk. (1985). Berberine synthase, the methylenedioxy group forming enzyme inberberine synthesis. Tetrahedron Letters. 26(2). 201–202. 21 indexed citations
14.
Zenk, Meinhart H., Martina Rueffer, Manfred Amann, Brigitte Deus‐Neumann, & Naotaka Nagakura. (1985). Benzylisoquinoline Biosynthesis by Cultivated Plant Cells and Isolated Enzymes. Journal of Natural Products. 48(5). 725–738. 44 indexed citations
15.
Rueffer, Martina, N. Nagakura, & Meinhart H. Zenk. (1983). Partial Purification and Properties of S-Adenosylmethionine: (R), (S)-Norlaudanosoline-6-O-Methyltransferase from Argemone platyceras Cell Cultures. Planta Medica. 49(11). 131–137. 28 indexed citations
16.
Rueffer, Martina, N. Nagakura, & Meinhart H. Zenk. (1983). A Highly Specific O-Methyltransferase for Nororientaline Synthesis Isolated fromArgemone platycerasCell Cultures. Planta Medica. 49(12). 196–198. 6 indexed citations
17.
Rueffer, Martina, H. El–Shagi, Naotaka Nagakura, & Meinhart H. Zenk. (1981). (S)‐norlaudanosoline synthase: The first enzyme in the benzylisoquinoline biosynthetic pathway. FEBS Letters. 129(1). 5–9. 47 indexed citations
18.
Rueffer, Martina, et al.. (1979). 4,21-Dehydrogeissoschizine, an intermediate in heteroyohimbine alkaloid biosynthesis. Journal of the Chemical Society Chemical Communications. 1016–1018. 12 indexed citations
19.
Stöckigt, Joachim, et al.. (1978). Indirect Identification of 4,21–Dehydrocorynantheine Aldehyde as an Intermediate in the Biosynthesis of Ajmalicine and Related Alkaloids. Planta Medica. 33(2). 188–192. 16 indexed citations
20.
Rueffer, Martina, Naotaka Nagakura, & Meinhart H. Zenk. (1978). Strictosidine, the common precursor for monoterpenoid indole alkaloids with 3 α and 3 β configuration. Tetrahedron Letters. 19(18). 1593–1596. 23 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Nailish Samanani Breakdown of academic impact, for papers by Robert H. Burnell Breakdown of academic impact, for papers by Dewan S. Bhakuni Breakdown of academic impact, for papers by R. M. LETCHER Breakdown of academic impact, for papers by Hisao Shibata Breakdown of academic impact, for papers by Nobuhiro Ikezawa Breakdown of academic impact, for papers by Benjamin Lallemand Breakdown of academic impact, for papers by Guo‐Jun Xu Breakdown of academic impact, for papers by Lee-Juian Lin Breakdown of academic impact, for papers by Yu‐Shia Cheng
Rankless by CCL
2026