G. Toppel

443 total citations
6 papers, 315 citations indexed

About

G. Toppel is a scholar working on Molecular Biology, Ecology, Evolution, Behavior and Systematics and Organic Chemistry. According to data from OpenAlex, G. Toppel has authored 6 papers receiving a total of 315 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Molecular Biology, 2 papers in Ecology, Evolution, Behavior and Systematics and 1 paper in Organic Chemistry. Recurrent topics in G. Toppel's work include Plant Toxicity and Pharmacological Properties (5 papers), Plant and fungal interactions (2 papers) and Botanical Research and Chemistry (2 papers). G. Toppel is often cited by papers focused on Plant Toxicity and Pharmacological Properties (5 papers), Plant and fungal interactions (2 papers) and Botanical Research and Chemistry (2 papers). G. Toppel collaborates with scholars based in Germany. G. Toppel's co-authors include Thomas Hartmann, Tobias Hartmann, Ludger Witte, Luc de Witte, Kirsten von Borstel and Adelheid Ehmke and has published in prestigious journals such as Phytochemistry, Planta and Plant Cell Reports.

In The Last Decade

G. Toppel

5 papers receiving 294 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
G. Toppel Germany	5	286	191	125	34	19	6	315
Kirsten von Borstel Germany	6	276 1.0×	239 1.3×	215 1.7×	34 1.0×	7 0.4×	7	422
Kumkum Rani India	8	172 0.6×	358 1.9×	537 4.3×	32 0.9×	6 0.3×	13	660
Kaige Zhao China	8	249 0.9×	69 0.4×	176 1.4×	14 0.4×	16 0.8×	15	336
Angela Rieck Germany	9	113 0.4×	62 0.3×	90 0.7×	15 0.4×	13 0.7×	10	250
M. P. Hegarty Australia	9	136 0.5×	71 0.4×	71 0.6×	31 0.9×	5 0.3×	20	267
P. V. Madhusoodanan India	12	197 0.7×	111 0.6×	203 1.6×	30 0.9×	20 1.1×	47	308
Angela Hoffman United States	9	131 0.5×	38 0.2×	107 0.9×	24 0.7×	31 1.6×	14	337
Marie L. Solt United States	9	179 0.6×	65 0.3×	124 1.0×	6 0.2×	37 1.9×	13	276
Joseph Lech United States	8	108 0.4×	83 0.4×	214 1.7×	63 1.9×	8 0.4×	11	340
Malcolm S. Kemp United Kingdom	11	136 0.5×	42 0.2×	163 1.3×	6 0.2×	13 0.7×	14	279

Countries citing papers authored by G. Toppel

Since Specialization

Citations

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

Fields of papers citing papers by G. Toppel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of G. Toppel

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

All Works

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6 of 6 papers shown

1.

Hartmann, Tobias, et al.. (1989). Metabolic Integration of the Pyrrolizidine Alkaloids in Respect to their Function in Chemical Protection ofSenecio vulgaris. Planta Medica. 55(2). 218–219. 1 indexed citations

2.

Hartmann, Tobias, et al.. (1988). Metabolic links between the biosynthesis of pyrrolizidine alkaloids and polyamines in root cultures of Senecio vulgaris. Planta. 175(1). 82–90. 49 indexed citations

3.

Toppel, G., Ludger Witte, & Thomas Hartmann. (1988). N-oxidation and degradation of pyrrolizidine alkaloids during germination of Crotalaria scassellatii. Phytochemistry. 27(12). 3757–3760. 23 indexed citations

4.

Toppel, G., et al.. (1987). Alkaloid patterns and biosynthetic capacity of root cultures from some pyrrolizidine alkaloid producing Senecio species. Plant Cell Reports. 6(6). 466–469. 59 indexed citations

5.

Hartmann, Thomas & G. Toppel. (1987). Senecionine n-oxide, the primary product of pyrrolizidine alkaloid biosynthesis in root cultures of Senecio vulgaris. Phytochemistry. 26(6). 1639–1643. 121 indexed citations

6.

Hartmann, Tobias, et al.. (1986). Reinvestigation of the Alkaloid Composition of Atropa belladonna Plants, Root Cultures and Suspension Cultures. Planta Medica. 52(6). 513–514. 62 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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