Johannes Siemens

1.3k total citations
25 papers, 941 citations indexed

About

Johannes Siemens is a scholar working on Plant Science, Molecular Biology and Endocrinology. According to data from OpenAlex, Johannes Siemens has authored 25 papers receiving a total of 941 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Plant Science, 10 papers in Molecular Biology and 9 papers in Endocrinology. Recurrent topics in Johannes Siemens's work include Plant Disease Resistance and Genetics (19 papers), Plant and Fungal Interactions Research (9 papers) and Plant Pathogens and Resistance (6 papers). Johannes Siemens is often cited by papers focused on Plant Disease Resistance and Genetics (19 papers), Plant and Fungal Interactions Research (9 papers) and Plant Pathogens and Resistance (6 papers). Johannes Siemens collaborates with scholars based in Germany, United States and New Zealand. Johannes Siemens's co-authors include Jutta Ludwig‐Müller, M. D. Sacristán, Hans Rudolf Graf, Michael Fähling, Peter Kobelt, Sabine Kunz, Astrid Schuller, Thomas Schmülling, Martin Parniske and Wolfgang Nagel and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLANT PHYSIOLOGY and Plant Science.

In The Last Decade

Johannes Siemens

23 papers receiving 920 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Johannes Siemens Germany 15 904 239 212 32 26 25 941
Astrid Schuller Germany 8 553 0.6× 205 0.9× 94 0.4× 32 1.0× 18 0.7× 9 584
G. Dijst Australia 8 652 0.7× 54 0.2× 215 1.0× 49 1.5× 126 4.8× 13 685
Parham Haddadi Canada 14 474 0.5× 126 0.5× 41 0.2× 19 0.6× 96 3.7× 20 504
T. D. Johnston United Kingdom 10 424 0.5× 113 0.5× 128 0.6× 44 1.4× 8 0.3× 26 491
Alessandra Panattoni Italy 10 367 0.4× 170 0.7× 111 0.5× 13 0.4× 27 1.0× 46 419
Mazen Alazem Taiwan 11 775 0.9× 159 0.7× 73 0.3× 19 0.6× 19 0.7× 16 820
Zabardast T. Buriev Uzbekistan 12 533 0.6× 138 0.6× 152 0.7× 11 0.3× 7 0.3× 32 577
Francis Rouxel France 12 550 0.6× 88 0.4× 60 0.3× 44 1.4× 174 6.7× 18 590
Yuanfu Ji United States 15 778 0.9× 237 1.0× 65 0.3× 54 1.7× 31 1.2× 24 823
Régis L. Corrêa Brazil 12 440 0.5× 183 0.8× 111 0.5× 7 0.2× 5 0.2× 26 546

Countries citing papers authored by Johannes Siemens

Since Specialization
Citations

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

Fields of papers citing papers by Johannes Siemens

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Johannes Siemens

This figure shows the co-authorship network connecting the top 25 collaborators of Johannes Siemens. A scholar is included among the top collaborators of Johannes Siemens 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 Johannes Siemens. Johannes Siemens 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.
Jahn, Linda A., Cornelia B. Horn, Paul Staswick, et al.. (2013). The Clubroot Pathogen (Plasmodiophora brassicae) Influences Auxin Signaling to Regulate Auxin Homeostasis in Arabidopsis. SHILAP Revista de lepidopterología. 2(4). 726–749. 46 indexed citations
2.
Siemens, Johannes, Maricruz González, Sebastian Wolf, et al.. (2010). Extracellular invertase is involved in the regulation of clubroot disease in Arabidopsis thaliana. Molecular Plant Pathology. 12(3). 247–262. 80 indexed citations
3.
Siemens, Johannes, et al.. (2009). Molecular Biology of Plasmodiophora brassicae. Journal of Plant Growth Regulation. 28(3). 245–251. 26 indexed citations
4.
Siemens, Johannes, Erich Glawischnig, & Jutta Ludwig‐Müller. (2008). Indole Glucosinolates and Camalexin do not Influence the Development of the Clubroot Disease in Arabidopsis thaliana. Journal of Phytopathology. 156(6). 332–337. 20 indexed citations
5.
Bulman, Simon, Johannes Siemens, Hayley J. Ridgway, Colin Eady, & Anthony J. Conner. (2006). Identification of genes from the obligate intracellular plant pathogen,Plasmodiophora brassicae. FEMS Microbiology Letters. 264(2). 198–204. 48 indexed citations
6.
Siemens, Johannes, Sabine Kunz, Astrid Schuller, et al.. (2006). Transcriptome Analysis of Arabidopsis Clubroots Indicate a Key Role for Cytokinins in Disease Development. Molecular Plant-Microbe Interactions. 19(5). 480–494. 232 indexed citations
7.
Graf, Hans Rudolf, Michael Fähling, & Johannes Siemens. (2004). Chromosome Polymorphism of the Obligate Biotrophic Parasite Plasmodiophora brassicae. Journal of Phytopathology. 152(2). 86–91. 22 indexed citations
8.
Fähling, Michael, Hans Rudolf Graf, & Johannes Siemens. (2004). Characterization of a Single‐Spore Isolate Population of Plasmodiophora brassicae Resulting from a Single Club. Journal of Phytopathology. 152(7). 438–444. 27 indexed citations
9.
Fähling, Michael, Hans Rudolf Graf, & Johannes Siemens. (2003). Pathotype Separation of Plasmodiophora brassicae by the Host Plant. Journal of Phytopathology. 151(7-8). 425–430. 72 indexed citations
10.
Siemens, Johannes, et al.. (2002). Plasmodiophora brassicae, the causal agent of clubroot disease, may penetrate plant cell walls via cellulase. Plant Protection Science. 38(SI 1 - 6th Conf EFPP). S69–S72. 8 indexed citations
11.
Siemens, Johannes, Michael Nagel, Jutta Ludwig‐Müller, & M. D. Sacristán. (2002). The Interaction of Plasmodiophora brassicae and Arabidopsis thaliana: Parameters for Disease Quantification and Screening of Mutant Lines. Journal of Phytopathology. 150(11-12). 592–605. 93 indexed citations
12.
Fähling, Michael, et al.. (2002). Resistance of Arabidopsis thaliana to the obligate biotrophic parasite Plasmodiophora brassicae. Plant Protection Science. 38(SI 2 - 6th Conf EFPP). 519–522. 7 indexed citations
13.
Siemens, Johannes. (2002). Interspecific Hybridisation between Wild Relatives and Brassica napus to Introduce New Resistance Traits iinto the Oilseed Rape Gene Pool. Czech Journal of Genetics and Plant Breeding. 38(3-4). 155–157. 14 indexed citations
14.
Graf, Hans Rudolf, et al.. (2001). Electrophoretic Karyotype of the Obligate Biotrophic Parasite Plasmodiophora brassicae Wor.. Journal of Phytopathology. 149(6). 313–318. 11 indexed citations
15.
Kobelt, Peter, Johannes Siemens, & M. D. Sacristán. (2000). Histological characterisation of the incompatible interaction between Arabidopsis thaliana and the obligate biotrophic pathogen Plasmodiophora brassicae. Mycological Research. 104(2). 220–225. 69 indexed citations
16.
Siemens, Johannes. (1997). Lyssenkoismus in Deutschland (1945 – 1965). Biologie in unserer Zeit. 27(4). 255–262. 3 indexed citations
17.
Siemens, Johannes, et al.. (1995). Plant regeneration from mesophyll protoplasts of Matthiola incana (L.) R. Br.. Plant Cell Reports. 14(7). 446–9.
18.
Siemens, Johannes & M. D. Sacristán. (1995). Production and characterization of somatic hybrids between Arabidopsis thaliana and Brassica nigra. Plant Science. 111(1). 95–106. 16 indexed citations
19.
Siemens, Johannes, et al.. (1993). Plant regeneration from mesophyll-protoplasts of four different ecotypes and two marker lines from Arabidopsis thaliana using a unique protocol. Plant Cell Reports. 12(10). 569–72. 12 indexed citations
20.
Lamprecht, I., B. Schaarschmidt, & Johannes Siemens. (1985). Microcalorimetric investigations on the metabolism of yeasts. Thermochimica Acta. 94(1). 129–138. 4 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 Astrid Schuller Breakdown of academic impact, for papers by G. Dijst Breakdown of academic impact, for papers by Parham Haddadi Breakdown of academic impact, for papers by T. D. Johnston Breakdown of academic impact, for papers by Alessandra Panattoni Breakdown of academic impact, for papers by Mazen Alazem Breakdown of academic impact, for papers by Zabardast T. Buriev Breakdown of academic impact, for papers by Francis Rouxel Breakdown of academic impact, for papers by Yuanfu Ji Breakdown of academic impact, for papers by Régis L. Corrêa
Rankless by CCL
2026