J. A. Roper

3.5k citations

30 papers · 2.8k indexed · 1 hit paper · h-index 16

Impact in

Cell Biology top 2%
- Plant Pathogens and Fungal Diseases
Pharmacology top 1%
- Fungal Biology and Applications
- Microbial Natural Products and Biosynthesis

Papers in

Cell Biology 11
- Plant Pathogens and Fungal Diseases 8
Plant Science 18
- Chromosomal and Genetic Variations 7
- Mycotoxins in Agriculture and Food 7
- Plant Disease Resistance and Genetics 7

Co-authors: G. Pontecorvo K. D. Macdonald Emma Forbes Brian W. Bainbridge Etta Käfer A. J. Clutterbuck João Lúcio de Azevedo J.R. Warr
Journals: Genetics Research (5 papers)Nature (4 papers)Microbiology (3 papers)Genetics (2 papers)Advances in genetics (1 paper)
Partner nations: United Kingdom Israel

In The Last Decade

J. A. Roper

29 papers receiving 2.5k citations

Hit Papers

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The Genetics of Aspergillus nidulans 1953 · 2.0k citations

Peers

Countries citing papers authored by J. A. Roper

Since Specialization

Citations

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

Fields of papers citing papers by J. A. Roper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. A. Roper. 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 J. A. Roper. The network helps show where J. A. Roper may publish in the future.

Co-authorship network

The 17 scholars most cited alongside J. A. Roper, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J. A. Roper Line = papers co-authored together J. A. Roper links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	wB1, a new white mutant of Aspergillus nidulans on linkage group VII Fungal Genetics Reports ·J. A. Roper, Michelle E. Walker	1990	3
2	Genome multiplication in growth and development. Biology of polyploid and polytene cells Endeavour ·J. A. Roper	1986	29
3	Spontaneous Duplications and Transpositions of a Large Chromosome Segment in Aspergillus nidulans Microbiology ·Widodo Widodo, J. A. Roper	1984	8
4	Modification of Chromosome Instability in Aspergillus nidulans Microbiology ·M.R. Callstrom, J. A. Roper, Jane K. Relton	1982	6
5	Mitotic Processes which Restore Genome Balance in Aspergillus nidulans Microbiology ·José G. B. A. Lima, J. A. Roper	1981	4
6	Dose effect of the uvsA+ gene product in duplication strains of Aspergillus nidulans Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis ·Irene Majerfeld, J. A. Roper	1978	4
7	The effects of coumarin on the frequency of deletions in a duplication strain of Aspergillus nidulans Molecular and General Genetics MGG ·Irene Majerfeld, J. A. Roper	1978	11
8	Genetic control of chromosome instability in Aspergillus nidulans as a mean for gene amplification in eukaryotic microorganisms Molecular and General Genetics MGG ·Yair Parag, J. A. Roper	1975	7
9	Mitotic non-conformity in Aspergillus nidulans: the effects of caffeine Molecular and General Genetics MGG ·J. A. Roper, Helen Palmer, Huang Qianwei	1972	14
10	A system generating spontaneous intrachromosomal changes at mitosis inAspergillus nidulans Genetics Research ·Z.Y. Wang Y.H. Wu, J. A. Roper	1969	27
11	Mitotic non-conformity inAspergillus nidulans: the production of hypodiploid and hypohaploid nuclei Genetics Research ·J. A. Roper, Z.Y. Wang Y.H. Wu	1969	14
12	QUANTITATIVE INTRACHROMOSOMAL CHANGES ARISING AT MITOSIS IN ASPERGILLUS NIDULANS Genetics ·Z.Y. Wang Y.H. Wu, J. A. Roper	1968	43
13	Lethal Mutations and Balanced Lethal Systems in Aspergillus nidulans Journal of General Microbiology ·João Lúcio de Azevedo, J. A. Roper	1967	12
14	A direct determination of nuclear distribution in heterokaryons ofAspergillus nidulans Genetics Research ·A. J. Clutterbuck, J. A. Roper	1966	42
15	Book Reviews British Medical Bulletin ·J. A. Roper	1962	1
16	Genetic determination of nutritional requirements Proceedings of The Nutrition Society ·J. A. Roper	1960	6
17	Resolving Power of Genetic Analysis Nature ·Yudhanjaya Wijeratne, J. A. Roper	1956	21
18	Recovery of the Complementary Products of Mitotic Crossing-over Nature ·J. A. Roper, R. H. Pritchard	1955	25
19	The Genetics of Aspergillus nidulans Advances in genetics ·G. Pontecorvo, J. A. Roper, İbrahim Hasanov, K. D. Macdonald, Li-wen Hsu Hit paper breakdown →	1953	1971
20	Production of heterozygous diploids in filamentous fungi Cellular and Molecular Life Sciences ·J. A. Roper	1952	176

About J. A. Roper

J. A. Roper is a scholar working on Cell Biology, Plant Science, Molecular Biology, Pharmacology and Biotechnology, having authored 30 papers that have together received 2.8k indexed citations. Recurring topics across this work include Fungal and yeast genetics research (16 papers), Plant Pathogens and Fungal Diseases (8 papers), Chromosomal and Genetic Variations (7 papers), Mycotoxins in Agriculture and Food (7 papers), Plant Disease Resistance and Genetics (7 papers), Plant Reproductive Biology (6 papers), Fungal Biology and Applications (4 papers) and Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities (3 papers). The work is most often cited by research in Cell Biology (657 citations), Pharmacology (613 citations), Plant Science (1.3k citations), Molecular Biology (2.0k citations) and Biotechnology (240 citations). J. A. Roper has collaborated with scholars based in United Kingdom and Israel. Frequent co-authors include G. Pontecorvo, K. D. Macdonald, Emma Forbes, Brian W. Bainbridge, Etta Käfer, A. J. Clutterbuck, João Lúcio de Azevedo, J.R. Warr, R. H. Pritchard and F. C. Heagy. Their work appears in journals such as Genetics Research, Nature, Microbiology, Genetics and Advances in genetics.

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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