Roy O. Morris

3.2k total citations
50 papers, 2.2k citations indexed

About

Roy O. Morris is a scholar working on Plant Science, Molecular Biology and Biotechnology. According to data from OpenAlex, Roy O. Morris has authored 50 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Plant Science, 30 papers in Molecular Biology and 6 papers in Biotechnology. Recurrent topics in Roy O. Morris's work include Plant tissue culture and regeneration (15 papers), Plant-Microbe Interactions and Immunity (8 papers) and Legume Nitrogen Fixing Symbiosis (8 papers). Roy O. Morris is often cited by papers focused on Plant tissue culture and regeneration (15 papers), Plant-Microbe Interactions and Immunity (8 papers) and Legume Nitrogen Fixing Symbiosis (8 papers). Roy O. Morris collaborates with scholars based in United States, United Kingdom and Russia. Roy O. Morris's co-authors include Gary K. Powell, James G. Laskey, Kristin Bilyeu, Joe B. Zaerr, Donna E. Akiyoshi, John W. Morris, Elizabeth M. MacDonald, Linda A. Castle, Nordine Cheikh and Joe C. Polacco and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Nucleic Acids Research.

In The Last Decade

Roy O. Morris

50 papers receiving 2.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Roy O. Morris United States 26 1.5k 1.4k 327 119 95 50 2.2k
Christian Godon France 9 1.7k 1.2× 2.0k 1.4× 199 0.6× 158 1.3× 87 0.9× 11 2.9k
Dora M. Rast Switzerland 26 795 0.5× 968 0.7× 252 0.8× 217 1.8× 45 0.5× 72 1.8k
Arthur L. Karr United States 14 1.3k 0.9× 655 0.5× 209 0.6× 110 0.9× 33 0.3× 28 2.1k
Fun Sun Chu United States 23 1.2k 0.8× 550 0.4× 185 0.6× 195 1.6× 57 0.6× 110 2.3k
Håkan Björndal Sweden 12 793 0.5× 985 0.7× 276 0.8× 86 0.7× 38 0.4× 27 2.0k
Pradhyumna Kumar Singh India 25 932 0.6× 1.4k 1.0× 442 1.4× 65 0.5× 95 1.0× 65 2.1k
Bjarne Gram Hansen Denmark 25 1.6k 1.1× 2.2k 1.5× 180 0.6× 94 0.8× 58 0.6× 35 3.0k
M. A. Berg Netherlands 33 924 0.6× 1.4k 1.0× 255 0.8× 158 1.3× 43 0.5× 118 2.7k
Maria Manuela Rigano Italy 30 1.2k 0.8× 1.0k 0.7× 476 1.5× 110 0.9× 78 0.8× 70 2.4k
Sylviane Dragacci France 21 892 0.6× 606 0.4× 389 1.2× 123 1.0× 418 4.4× 37 2.1k

Countries citing papers authored by Roy O. Morris

Since Specialization
Citations

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

Fields of papers citing papers by Roy O. Morris

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roy O. Morris. 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 Roy O. Morris. The network helps show where Roy O. Morris may publish in the future.

Co-authorship network of co-authors of Roy O. Morris

This figure shows the co-authorship network connecting the top 25 collaborators of Roy O. Morris. A scholar is included among the top collaborators of Roy O. Morris 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 Roy O. Morris. Roy O. Morris 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.
Bilyeu, Kristin, James G. Laskey, & Roy O. Morris. (2003). Dynamics of expression and distribution of cytokinin oxidase/dehydrogenase in developing maize kernels. Plant Growth Regulation. 39(3). 195–203. 15 indexed citations
2.
Morris, Roy O., Kristin Bilyeu, James G. Laskey, & Nordine Cheikh. (1999). Isolation of a Gene Encoding a Glycosylated Cytokinin Oxidase from Maize. Biochemical and Biophysical Research Communications. 255(2). 328–333. 147 indexed citations
3.
Gray, J A, et al.. (1996). Transfer RNA Is the Source of Extracellular Isopentenyladenine in a Ti-Plasmidless Strain of Agrobacterium tumefaciens. PLANT PHYSIOLOGY. 110(2). 431–438. 32 indexed citations
4.
Kamínek, M., et al.. (1995). Changes in cytokinins and cytokinin oxidase activity in developing maize kernels and the effects of exogenous cytokinin on kernel development. Plant Physiology and Biochemistry. 33(3). 327–336. 91 indexed citations
5.
6.
Castle, Linda A., Kimberly D. Smith, & Roy O. Morris. (1992). Cloning and sequencing of an Agrobacterium tumefaciens beta-glucosidase gene involved in modifying a vir-inducing plant signal molecule. Journal of Bacteriology. 174(5). 1478–1486. 61 indexed citations
7.
Morris, John W., Patrick Doumas, Roy O. Morris, & Joe B. Zaerr. (1990). Cytokinins in Vegetative and Reproductive Buds of Pseudotsuga menziesii. PLANT PHYSIOLOGY. 93(1). 67–71. 33 indexed citations
8.
Morris, John W., Linda A. Castle, & Roy O. Morris. (1989). Efficacy of different Agrobacterium tumefaciens strains in transformation of pinaceous gymnosperms. Physiological and Molecular Plant Pathology. 34(5). 451–461. 31 indexed citations
9.
Powell, Bradford S., Gary K. Powell, Roy O. Morris, Peter Rogowsky, & Clarence I. Kado. (1987). Nucleotide sequence of the virG locus of the Agrobacterium tumefaciens plasmid pTiC58. Molecular Microbiology. 1(1). 309–316. 31 indexed citations
10.
MacDonald, Elizabeth M., Gary K. Powell, Dean A. Regier, et al.. (1986). Secretion of Zeatin, Ribosylzeatin, and Ribosyl-1″ -Methylzeatin by Pseudomonas savastanoi. PLANT PHYSIOLOGY. 82(3). 742–747. 57 indexed citations
11.
Crozier, Alan, Joe B. Zaerr, & Roy O. Morris. (1982). Reversed- and normal-phase high-performance liquid chromatography of gibberellin methoxycoumaryl esters. Journal of Chromatography A. 238(1). 157–166. 19 indexed citations
12.
Edwards, Cynthia A., et al.. (1981). Cytokinin-Active Ribonucleosides in Phaseolus RNA. PLANT PHYSIOLOGY. 67(6). 1181–1184. 6 indexed citations
13.
Crozier, Alan, Joe B. Zaerr, & Roy O. Morris. (1980). High-performance steric exclusion chromatography of plant hormones. Journal of Chromatography A. 198(1). 57–63. 11 indexed citations
14.
Crozier, Alan, et al.. (1980). Analysis of picogram quantities of indole-3-acetic acid by high performance liquid chromatography-fluorescence procedures. Planta. 150(5). 366–370. 47 indexed citations
15.
Lester, Bruce R., Roy O. Morris, & Joe H. Cherry. (1979). Purification of Leucine tRNA Isoaccepting Species from Soybean Cotyledons. PLANT PHYSIOLOGY. 63(1). 87–92. 5 indexed citations
16.
Morris, Roy O.. (1977). Mass Spectroscopic Identification of Cytokinins. PLANT PHYSIOLOGY. 59(6). 1029–1033. 48 indexed citations
17.
Morris, Roy O., Joe B. Zaerr, & Richard W. Chapman. (1976). Trace enrichment of cytokinins from Douglas-fir xylem extrudate. Planta. 131(3). 271–274. 28 indexed citations
18.
Babcock, Donner F. & Roy O. Morris. (1973). Specific Degradation of a Plant Leucyl Transfer Ribonucleic Acid by a Factor in the Homologous Synthetase Preparation. PLANT PHYSIOLOGY. 52(3). 292–297. 5 indexed citations
19.
Scott, Peter C. & Roy O. Morris. (1970). Quantitative Distribution and Metabolism of Auxin Herbicides in Roots. PLANT PHYSIOLOGY. 46(5). 680–684. 13 indexed citations
20.
Babcock, Donner F. & Roy O. Morris. (1970). Quantitative measurement of isoprenoid nucleosides in transfer ribonucleic acid. Biochemistry. 9(19). 3701–3705. 30 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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