G. A. Armstrong

1.4k total citations
16 papers, 1.1k citations indexed

About

G. A. Armstrong is a scholar working on Molecular Biology, Plant Science and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, G. A. Armstrong has authored 16 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Molecular Biology, 5 papers in Plant Science and 5 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in G. A. Armstrong's work include Photosynthetic Processes and Mechanisms (12 papers), Algal biology and biofuel production (5 papers) and Plant biochemistry and biosynthesis (5 papers). G. A. Armstrong is often cited by papers focused on Photosynthetic Processes and Mechanisms (12 papers), Algal biology and biofuel production (5 papers) and Plant biochemistry and biosynthesis (5 papers). G. A. Armstrong collaborates with scholars based in United States, Switzerland and Germany. G. A. Armstrong's co-authors include Bernd Weißhaar, Klaus Hahlbrock, John E. Hearst, Klaus Apel, Marie Alberti, Geneviève Frick, Ulrich Sperling, S. Runge, David N. Cook and Arno Schmidt and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and The EMBO Journal.

In The Last Decade

G. A. Armstrong

15 papers receiving 1.1k citations

Peers

G. A. Armstrong

BIOCH

RESE

BIOTE

Marie‐Hélène Montané France

Satomi Takeda Japan

Francesca Leach United States

M. Águila Ruiz‐Sola Spain

Birgit Agne Germany

Paulina Fuentes Chile

H. Itzhaki Israel

Martine Devic France

Jane Silverthorne United States

Adriana Pružinská Switzerland

Marie‐Hélène Montané France

G. A. Armstrong

751 ×0.8

705 ×1.3

47 ×0.2

BIOCH

150 ×0.7

RESE

47 ×0.8

BIOTE

Citations per year, relative to G. A. Armstrong G. A. Armstrong (= 1×) peers Marie‐Hélène Montané

Countries citing papers authored by G. A. Armstrong

Since Specialization

Citations

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

Fields of papers citing papers by G. A. Armstrong

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of G. A. Armstrong

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

All Works

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16 of 16 papers shown

Ougham, Helen, et al.. (2001). Both light‐dependent protochlorophyllide oxidoreductase A and protochlorophyllide oxidoreductase B are down‐regulated in the slender mutant of barley. Journal of Experimental Botany. 52(360). 1447–1454. 9 indexed citations

Armstrong, G. A., S. Runge, Geneviève Frick, Ulrich Sperling, & Klaus Apel. (1995). Identification of NADPH:Protochlorophyllide Oxidoreductases A and B: A Branched Pathway for Light-Dependent Chlorophyll Biosynthesis in Arabidopsis thaliana. PLANT PHYSIOLOGY. 108(4). 1505–1517. 223 indexed citations

Lebedev, Nikolai, Barbara van Cleve, G. A. Armstrong, & Klaus Apel. (1995). Chlorophyll Synthesis in a Deetiolated (det340) Mutant of Arabidopsis without NADPH-Protochlorophyllide (PChlide) Oxidoreductase (POR) A and Photoactive PChlide-F655.. The Plant Cell. 2081–2090. 58 indexed citations

Hundle, Bhupinder S., Marie Alberti, Peter Beyer, et al.. (1994). Functional assignment of Erwinia herbicola Eho10 carotenoid genes expressed in Escherichia coli. Molecular and General Genetics MGG. 245(4). 406–416. 67 indexed citations

Armstrong, G. A.. (1994). Eubacteria show their true colors: genetics of carotenoid pigment biosynthesis from microbes to plants. Journal of Bacteriology. 176(16). 4795–4802. 94 indexed citations

Armstrong, G. A., David N. Cook, D Ma, et al.. (1993). Regulation of carotenoid and bacteriochlorophyll biosynthesis genes and identification of an evolutionarily conserved gene required for bacteriochlorophyll accumulation. Journal of General Microbiology. 139(5). 897–906. 20 indexed citations

Wintenberg, A.L., M.N. Ericson, S.M. Babcock, et al.. (1993). Sensor-based whole-arm obstacle avoidance utilizing ASIC technology. 26–29.

Armstrong, G. A., Bernd Weißhaar, & Klaus Hahlbrock. (1992). Homodimeric and heterodimeric leucine zipper proteins and nuclear factors from parsley recognize diverse promoter elements with ACGT cores.. The Plant Cell. 4(5). 525–537. 97 indexed citations

Weißhaar, Bernd, et al.. (1991). Regulatory elements required for light-mediated expression of the Petroselinum crispum chalcone synthase gene.. PubMed. 45. 191–210. 18 indexed citations

10.

Leach, Francesca, G. A. Armstrong, & John E. Hearst. (1991). Photosynthetic genes in Rhodobacter capsulatus can be regulated by oxygen during dark respiratory growth with dimethylsulphoxide. Journal of General Microbiology. 137(7). 1551–1556. 4 indexed citations

11.

Weißhaar, Bernd, et al.. (1991). Light-inducible and constitutively expressed DNA-binding proteins recognizing a plant promoter element with functional relevance in light responsiveness.. The EMBO Journal. 10(7). 1777–1786. 257 indexed citations

12.

Weißhaar, Bernd, et al.. (1991). Regulatory elements required for light-mediated expression of the Petroselinum crispum chalcone synthase gene.. PubMed. 45(6). 191–210. 8 indexed citations

13.

Armstrong, G. A., Arno Schmidt, Gerhard Sandmann, & John E. Hearst. (1990). Genetic and biochemical characterization of carotenoid biosynthesis mutants of Rhodobacter capsulatus.. Journal of Biological Chemistry. 265(14). 8329–8338. 62 indexed citations

14.

Armstrong, G. A., Marie Alberti, & John E. Hearst. (1990). Conserved enzymes mediate the early reactions of carotenoid biosynthesis in nonphotosynthetic and photosynthetic prokaryotes.. Proceedings of the National Academy of Sciences. 87(24). 9975–9979. 114 indexed citations

15.

Cook, David N., G. A. Armstrong, & John E. Hearst. (1989). Induction of anaerobic gene expression in Rhodobacter capsulatus is not accompanied by a local change in chromosomal supercoiling as measured by a novel assay. Journal of Bacteriology. 171(9). 4836–4843. 28 indexed citations

16.

Zhu, Yongsheng, David N. Cook, Francesca Leach, et al.. (1986). Oxygen-regulated mRNAs for light-harvesting and reaction center complexes and for bacteriochlorophyll and carotenoid biosynthesis in Rhodobacter capsulatus during the shift from anaerobic to aerobic growth. Journal of Bacteriology. 168(3). 1180–1188. 37 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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