R. Horgan

4.1k total citations
86 papers, 2.9k citations indexed

About

R. Horgan is a scholar working on Plant Science, Molecular Biology and Organic Chemistry. According to data from OpenAlex, R. Horgan has authored 86 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 54 papers in Plant Science, 50 papers in Molecular Biology and 7 papers in Organic Chemistry. Recurrent topics in R. Horgan's work include Plant tissue culture and regeneration (20 papers), Plant Molecular Biology Research (17 papers) and Plant Stress Responses and Tolerance (12 papers). R. Horgan is often cited by papers focused on Plant tissue culture and regeneration (20 papers), Plant Molecular Biology Research (17 papers) and Plant Stress Responses and Tolerance (12 papers). R. Horgan collaborates with scholars based in United Kingdom, United States and Netherlands. R. Horgan's co-authors include Andrew D. Parry, Steven J. Neill, John R. Blackwell, P. F. Wareing, Brian A. McGaw, Harry J. Klee, June I. Medford, Ian M. Scott, L. M. S. Palni and Martin Palmer and has published in prestigious journals such as The Plant Cell, PLANT PHYSIOLOGY and Analytical Biochemistry.

In The Last Decade

R. Horgan

85 papers receiving 2.7k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
R. Horgan United Kingdom	32	2.2k	1.9k	219	202	138	86	2.9k
M. M. Yeoman United Kingdom	28	1.5k 0.7×	1.6k 0.8×	346 1.6×	107 0.5×	186 1.3×	80	2.2k
Machteld C. Mok United States	27	3.1k 1.5×	2.6k 1.4×	328 1.5×	195 1.0×	207 1.5×	66	3.8k
Peter Heinstein United States	26	1.7k 0.8×	1.5k 0.8×	179 0.8×	136 0.7×	229 1.7×	59	2.6k
M. Kamínek Czechia	28	2.5k 1.2×	1.8k 0.9×	151 0.7×	169 0.8×	102 0.7×	79	3.0k
Noboru Murofushi Japan	28	2.5k 1.1×	1.8k 1.0×	130 0.6×	327 1.6×	166 1.2×	200	3.3k
Hector E. Flores United States	28	2.6k 1.2×	2.4k 1.3×	334 1.5×	127 0.6×	87 0.6×	55	3.5k
Richard N. Trelease United States	36	1.7k 0.8×	2.9k 1.5×	141 0.6×	74 0.4×	248 1.8×	90	3.8k
Ph. Matile Switzerland	35	2.0k 0.9×	2.2k 1.2×	266 1.2×	204 1.0×	234 1.7×	63	3.4k
Jacques Hille Netherlands	36	3.7k 1.7×	2.6k 1.4×	364 1.7×	248 1.2×	304 2.2×	101	4.6k
Sergeï Kushnir Belgium	29	2.4k 1.1×	2.6k 1.4×	165 0.8×	92 0.5×	168 1.2×	51	3.9k

Countries citing papers authored by R. Horgan

Since Specialization

Citations

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

Fields of papers citing papers by R. Horgan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R. Horgan

This figure shows the co-authorship network connecting the top 25 collaborators of R. Horgan. A scholar is included among the top collaborators of R. Horgan 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 R. Horgan. R. Horgan 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

Parry, Andrew D. & R. Horgan. (1992). Abscisic acid biosynthesis in roots. Planta. 187(2). 185–191. 49 indexed citations

Blackwell, John R. & R. Horgan. (1991). A novel strategy for production of a highly expressed recombinant protein in an active form. FEBS Letters. 295(1-3). 10–12. 182 indexed citations

Horgan, R., et al.. (1991). A cytokinin-resistant mutant of Nicotiana plumbaginifolia is wilty. Planta. 183(2). 244–50. 32 indexed citations

Horgan, R., et al.. (1991). Abscisic-acid metabolism in a wilty mutant of Nicotiana plumbaginifolia. Planta. 183(2). 237–43. 37 indexed citations

Parry, Andrew D. & R. Horgan. (1991). Carotenoids and abscisic acid (ABA) biosynthesis in higher plants. Physiologia Plantarum. 82(2). 320–326. 5 indexed citations

Parry, Andrew D., et al.. (1990). The role of cis-carotenoids in abscisic acid biosynthesis. Planta. 182(1). 118–28. 72 indexed citations

Burch, Lindsay & R. Horgan. (1989). The purification of cytokinin oxidase from Zea mays kernels. Phytochemistry. 28(5). 1313–1319. 32 indexed citations

Medford, June I., et al.. (1989). Alterations of Endogenous Cytokinins in Transgenic Plants Using a Chimeric Isopentenyl Transferase Gene. The Plant Cell. 1(4). 403–403. 71 indexed citations

McGaw, Brian A., R. Horgan, Jim K. Heald, G. J. Wullems, & R. A. Schilperoort. (1988). Mass-spectrometric quantitation of cytokinins in tobacco crown-gall tumours induced by mutated octopine Ti plasmids of Agrobacterium tumefaciens. Planta. 176(2). 230–234. 15 indexed citations

10.

Palni, L. M. S., Lindsay Burch, & R. Horgan. (1988). The effect of auxin concentration on cytokinin stability and metabolism. Planta. 174(2). 231–234. 91 indexed citations

11.

Parry, Andrew D., Steven J. Neill, & R. Horgan. (1988). Xanthoxin levels and metabolism in the wild-type and wilty mutants of tomato. Planta. 173(3). 397–404. 63 indexed citations

12.

Scott, Ian M., George C. Martin, R. Horgan, & James K. Heald. (1982). Mass spectrometric measurement of zeatin glycoside levels in Vinca rosea L. crown gall tissue. Planta. 154(3). 273–276. 26 indexed citations

13.

Palmer, Martin, R. Horgan, & P. F. Wareing. (1981). Cytokinin metabolism in Phaseolus vulgaris L.. Planta. 153(4). 297–302. 66 indexed citations

14.

Stuchbury, T., L. M. S. Palni, R. Horgan, & P. F. Wareing. (1979). The biosynthesis of cytokinins in crown-gall tissue of Vinca rosea. Planta. 147(2). 97–102. 51 indexed citations

15.

Horgan, R., et al.. (1978). Dihydrozeatin riboside, a minor cytokinin from the leaves of Phaseolus vulgaris L.. Planta. 140(2). 151–153. 24 indexed citations

16.

Lorenzi, Roberto, P. F. Saunders, James K. Heald, & R. Horgan. (1977). A novel gibberellin from needles of Picea sitchensis. Plant Science Letters. 8(3). 179–182. 9 indexed citations

17.

Thompson, Andrew, et al.. (1977). A cytokinin glucoside from the leaves of Phaseolus vulgaris L.. Planta. 135(3). 285–288. 65 indexed citations

18.

Walton, Daniel C., Robert B. Wellner, & R. Horgan. (1977). Synthesis of tritiated abscisic acid of high specific activity. Phytochemistry. 16(7). 1059–1061. 14 indexed citations

19.

Thompson, Andrew, R. Horgan, & James K. Heald. (1975). A quantitative analysis of cytokinin using single-ion-current-monitoring. Planta. 124(2). 207–210. 12 indexed citations

20.

Horgan, R., et al.. (1973). A new cytokinin from populus robusta. Tetrahedron Letters. 14(30). 2827–2828. 51 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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