H. -U. Koop

1.7k total citations
43 papers, 1.2k citations indexed

About

H. -U. Koop is a scholar working on Molecular Biology, Plant Science and Biotechnology. According to data from OpenAlex, H. -U. Koop has authored 43 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Molecular Biology, 15 papers in Plant Science and 10 papers in Biotechnology. Recurrent topics in H. -U. Koop's work include Plant tissue culture and regeneration (17 papers), Transgenic Plants and Applications (10 papers) and Protist diversity and phylogeny (9 papers). H. -U. Koop is often cited by papers focused on Plant tissue culture and regeneration (17 papers), Transgenic Plants and Applications (10 papers) and Protist diversity and phylogeny (9 papers). H. -U. Koop collaborates with scholars based in Germany, United States and Austria. H. -U. Koop's co-authors include Christian Eibl, Zhurong Zou, Waltraud Kofer, Klaus Steinmüller, G. Wanner, Oswald Kiermayer, Christian Jung, Alexander Dovzhenko, Hans‐Georg Schweiger and Hans‐Joachim Harloff and has published in prestigious journals such as Optics Letters, Phytochemistry and Theoretical and Applied Genetics.

In The Last Decade

H. -U. Koop

43 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H. -U. Koop Germany	21	938	590	185	139	109	43	1.2k
B. A. Palevitz United States	27	1.7k 1.8×	1.4k 2.4×	52 0.3×	61 0.4×	230 2.1×	41	2.3k
Stanislav Vitha United States	21	1.5k 1.6×	1.0k 1.7×	59 0.3×	285 2.1×	104 1.0×	51	1.9k
Terri G. Dünahay United States	10	1.0k 1.1×	387 0.7×	59 0.3×	461 3.3×	24 0.2×	14	1.3k
N W Gillham United States	21	1.6k 1.7×	294 0.5×	61 0.3×	612 4.4×	71 0.7×	29	1.8k
Seiji Sonobe Japan	26	1.8k 1.9×	1.5k 2.6×	24 0.1×	69 0.5×	122 1.1×	75	2.4k
Barbara L. Randolph-Anderson United States	5	952 1.0×	205 0.3×	138 0.7×	444 3.2×	28 0.3×	6	1.1k
Etsuo Yokota Japan	29	2.0k 2.2×	1.3k 2.3×	25 0.1×	65 0.5×	210 1.9×	60	2.6k
Barry A. Palevitz United States	24	1.2k 1.3×	1.1k 1.9×	49 0.3×	49 0.4×	144 1.3×	46	1.7k
Régis Mache France	27	1.7k 1.8×	873 1.5×	21 0.1×	173 1.2×	134 1.2×	51	2.1k
Klaus V. Kowallik Germany	16	1.6k 1.7×	425 0.7×	17 0.1×	221 1.6×	152 1.4×	28	1.8k

Countries citing papers authored by H. -U. Koop

Since Specialization

Citations

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

Fields of papers citing papers by H. -U. Koop

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. -U. Koop. 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 H. -U. Koop. The network helps show where H. -U. Koop may publish in the future.

Co-authorship network of co-authors of H. -U. Koop

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Koop, H. -U., et al.. (2007). OPC verification on cell level using fully rigorous mask topography simulation. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6730. 67304J–67304J. 6 indexed citations

Koop, H. -U., et al.. (2007). Impact of mask pellicle effects to OPC quality. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6607. 66070N–66070N. 1 indexed citations

Radykewicz, Tanja, et al.. (2005). Metabolic flux analysis in complex isotopolog space. Recycling of glucose in tobacco plants. Phytochemistry. 66(3). 323–335. 22 indexed citations

Dovzhenko, Alexander, Cristina Dal Bosco, Jörg Meurer, & H. -U. Koop. (2003). Efficient regeneration from cotyledon protoplasts in Arabidopsis thaliana. PROTOPLASMA. 222(1-2). 107–111. 52 indexed citations

Lössl, Andreas Günter, Christian Eibl, Hans‐Joachim Harloff, Christian Jung, & H. -U. Koop. (2003). Polyester synthesis in transplastomic tobacco (Nicotiana tabacum L.): significant contents of polyhydroxybutyrate are associated with growth reduction. Plant Cell Reports. 21(9). 891–899. 100 indexed citations

Huang, Fengting, Sebastian Klaus, Stefan Herz, et al.. (2002). Efficient plastid transformation in tobacco using the aphA-6 gene and kanamycin selection. Molecular Genetics and Genomics. 268(1). 19–27. 76 indexed citations

Koop, H. -U., et al.. (1998). Tissue culture of wild-type, interspecific genome/plastome hybrids and plastome mutants of evening primrose ( Oenothera) : controlled morphogenesis and transformation. Plant Cell Reports. 17(8). 605–611. 8 indexed citations

Kofer, Waltraud, H. -U. Koop, G. Wanner, & Klaus Steinmüller. (1998). Mutagenesis of the genes encoding subunits A, C, H, I, J and K of the plastid NAD(P)H-plastoquinone-oxidoreductase in tobacco by polyethylene glycol-mediated plastome transformation. Molecular and General Genetics MGG. 258(1-2). 166–173. 142 indexed citations

Кучук, М. В., R. G. Herrmann, & H. -U. Koop. (1998). Plant regeneration from leaf protoplasts of evening primrose ( Oenothera hookeri ). Plant Cell Reports. 17(8). 601–604. 17 indexed citations

10.

Dovzhenko, Alexander, et al.. (1998). Thin-alginate-layer technique for protoplast culture of tobacco leaf protoplasts: Shoot formation in less than two weeks. PROTOPLASMA. 204(1-2). 114–118. 34 indexed citations

11.

Hong-yuan, Yang, et al.. (1995). Single-Pair Fusion of Various Combinations Between Female Gametoplasts and Other Protoplasts in Nicotiana tabacum. Journal of Integrative Plant Biology. 37(1). 36. 19 indexed citations

12.

Golds, T. J., et al.. (1994). Protoplast preparation without centrifugation: plant regeneration of barley (Hordeum vulgare L.). Plant Cell Reports. 13-13(3-4). 188–92. 13 indexed citations

13.

Streubel, Monika, et al.. (1991). PEG-mediated plastid transformation: a new system for transient gene expression assays in chloroplasts. Theoretical and Applied Genetics. 82(6). 717–722. 28 indexed citations

14.

Koop, H. -U., et al.. (1991). Lipofectin: direct gene transfer to higher plants using cationic liposomes. Theoretical and Applied Genetics. 83(1). 1–5. 18 indexed citations

15.

Koop, H. -U., et al.. (1989). Simplified procedures for microculture and microfusion of individual protoplasts. 1 indexed citations

16.

Tyagi, Akhilesh K., et al.. (1989). PEG- and electroporation-induced transformation in Nicotiana tabacum: influence of genotype on transformation frequencies. Theoretical and Applied Genetics. 78(2). 287–292. 25 indexed citations

17.

Schweiger, Hans‐Georg, et al.. (1987). Individual selection, culture and manipulation of higher plant cells. Theoretical and Applied Genetics. 73(6). 769–783. 43 indexed citations

18.

Koop, H. -U., et al.. (1978). Continuous observation of the giant primary nucleus ofAcetabularia in situ. PROTOPLASMA. 96(1-2). 89–99. 8 indexed citations

19.

Koop, H. -U.. (1975). Über den Ort der Meiose beiAcetabularia mediterranea. PROTOPLASMA. 85(1). 109–114. 21 indexed citations

20.

Koop, H. -U.. (1975). Germination of Cysts inAcetabularia mediterranea. PROTOPLASMA. 84(1-2). 137–146. 17 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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