Peter R. Ryan

16.6k total citations · 7 hit papers
115 papers, 12.6k citations indexed

About

Peter R. Ryan is a scholar working on Plant Science, Biomaterials and Agronomy and Crop Science. According to data from OpenAlex, Peter R. Ryan has authored 115 papers receiving a total of 12.6k indexed citations (citations by other indexed papers that have themselves been cited), including 108 papers in Plant Science, 10 papers in Biomaterials and 7 papers in Agronomy and Crop Science. Recurrent topics in Peter R. Ryan's work include Aluminum toxicity and tolerance in plants and animals (77 papers), Plant Micronutrient Interactions and Effects (52 papers) and Plant Stress Responses and Tolerance (43 papers). Peter R. Ryan is often cited by papers focused on Aluminum toxicity and tolerance in plants and animals (77 papers), Plant Micronutrient Interactions and Effects (52 papers) and Plant Stress Responses and Tolerance (43 papers). Peter R. Ryan collaborates with scholars based in Australia, Japan and China. Peter R. Ryan's co-authors include Emmanuel Delhaize, Jian Feng, Leon V. Kochian, Takayuki Sasaki, Yoko Yamamoto, Peter Randall, Hideaki Matsumoto, Alan E. Richardson, Stephen D. Tyerman and Diane M. Hebb and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Nature Communications.

In The Last Decade

Peter R. Ryan

115 papers receiving 12.2k citations

Hit Papers

Aluminum Toxicity and Tolerance in Plants 1993 2026 2004 2015 1995 2001 2004 1993 2011 250 500 750 1000
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Aluminum Toxicity and Tolerance in Plants
    1995 1.1k citations Emmanuel Delhaize, Peter R. Ryan PLANT PHYSIOLOGY profile →
  2. Aluminium tolerance in plants and the complexing role of organic acids
    2001 1.0k citations Peter R. Ryan, Emmanuel Delhaize et al. profile →
  3. A wheat gene encoding an aluminum‐activated malate transporter
    2004 739 citations Takayuki Sasaki, Yoko Yamamoto et al. profile →
  4. Aluminum Tolerance in Wheat (Triticum aestivum L.) (II. Aluminum-Stimulated Excretion of Malic Acid from Root Apices)
    1993 712 citations Emmanuel Delhaize, Peter R. Ryan et al. PLANT PHYSIOLOGY profile →
  5. Plant and microbial strategies to improve the phosphorus efficiency of agriculture
    2011 685 citations Alan E. Richardson, Peter R. Ryan et al. Plant and Soil profile →
  6. Aluminium Toxicity in Roots: An Investigation of Spatial Sensitivity and the Role of the Root Cap
    1993 482 citations Peter R. Ryan, Leon V. Kochian et al. Journal of Experimental Botany profile →
  7. GABA signalling modulates plant growth by directly regulating the activity of plant-specific anion transporters
    2015 322 citations Stephen D. Tyerman, Jayakumar Bose et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Peter R. Ryan Australia 53 11.4k 1.5k 962 907 538 115 12.6k
Emmanuel Delhaize Australia 54 12.1k 1.1× 1.6k 1.1× 1.2k 1.2× 951 1.0× 520 1.0× 108 13.5k
Walter J. Horst Germany 57 10.6k 0.9× 1.1k 0.7× 1.2k 1.3× 938 1.0× 434 0.8× 160 11.5k
Charlotte Poschenrieder Spain 59 8.9k 0.8× 846 0.6× 580 0.6× 1.1k 1.2× 322 0.6× 194 11.4k
Ren Fang Shen China 45 5.1k 0.4× 538 0.4× 851 0.9× 694 0.8× 345 0.6× 207 6.5k
Zdenko Rengel Australia 47 6.5k 0.6× 494 0.3× 1.9k 1.9× 589 0.6× 363 0.7× 122 7.5k
Ernest A. Kirkby United Kingdom 33 6.4k 0.6× 374 0.2× 1.9k 2.0× 593 0.7× 359 0.7× 50 8.2k
Juan Barceló Spain 52 6.6k 0.6× 756 0.5× 367 0.4× 699 0.8× 228 0.4× 121 8.6k
H. Marschner Germany 60 11.4k 1.0× 531 0.4× 3.1k 3.2× 899 1.0× 330 0.6× 220 13.3k
Shao Jian Zheng China 59 8.4k 0.7× 777 0.5× 282 0.3× 1.4k 1.5× 372 0.7× 168 9.6k
Horst Marschner Germany 50 11.3k 1.0× 347 0.2× 2.7k 2.8× 1.2k 1.3× 570 1.1× 94 13.5k

Countries citing papers authored by Peter R. Ryan

Since Specialization
Citations

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

Fields of papers citing papers by Peter R. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Peter R. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of Peter R. Ryan. A scholar is included among the top collaborators of Peter R. Ryan 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 Peter R. Ryan. Peter R. Ryan 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.
Wei, Changhe, Shengchun Li, Xu Zhou, et al.. (2025). Transcriptomic and metabolomic analyses of Tartary buckwheat roots during cadmium stress. Scientific Reports. 15(1). 5100–5100. 4 indexed citations
2.
Delgado, Mabel, Patricio Javier Barra, Gustavo Habermann, et al.. (2025). Prospecting the presence of aluminum-accumulating species inhabiting temperate rainforests from southern Chile. Plant and Soil. 515(1). 393–406. 2 indexed citations
3.
Li, Xiaoqing, Di He, Rosemary G. White, et al.. (2024). Reduced tillering and dwarfing genes alter root traits and rhizo‐economics in wheat. Physiologia Plantarum. 176(3). e14336–e14336. 2 indexed citations
4.
Milne, Ricky J., Katherine E. Dibley, Jayakumar Bose, et al.. (2024). Dissecting the causal polymorphism of the Lr67res multipathogen resistance gene. Journal of Experimental Botany. 75(13). 3877–3890. 2 indexed citations
5.
6.
Ryan, Peter R. & Jianli Yang. (2024). Sensing the toxic aluminum cations in acidic soils. Cell Research. 34(4). 269–270. 3 indexed citations
7.
Ryan, Peter R.. (2023). Feeding the World in 2050: Closing Yield Gaps on Hostile Soils. Journal of soil science and plant nutrition. 23(1). 1–3. 2 indexed citations
8.
Li, Xiaoqing, Anton Wasson, Alexander B. Zwart, et al.. (2023). Physical Mapping of QTLs for Root Traits in a Population of Recombinant Inbred Lines of Hexaploid Wheat. International Journal of Molecular Sciences. 24(13). 10492–10492. 1 indexed citations
9.
Cai, Shengguan, Yuqing Huang, Yang Liu, et al.. (2022). Evolution of phosphate metabolism in Tibetan wild barley to adapt to aluminum stress. Plant and Soil. 505(1-2). 897–917. 5 indexed citations
10.
Kawasaki, Akitomo, Paul G. Dennis, Christian Forstner, et al.. (2021). Manipulating exudate composition from root apices shapes the microbiome throughout the root system. PLANT PHYSIOLOGY. 187(4). 2279–2295. 74 indexed citations
11.
Milne, Ricky J., Katherine E. Dibley, Wendelin Schnippenkoetter, et al.. (2018). The Wheat Lr67 Gene from the Sugar Transport Protein 13 Family Confers Multipathogen Resistance in Barley. PLANT PHYSIOLOGY. 179(4). 1285–1297. 60 indexed citations
12.
Ryan, Peter R., Richard A. James, Chandrakumara Weligama, et al.. (2014). Can citrate efflux from roots improve phosphorus uptake by plants? Testing the hypothesis with near‐isogenic lines of wheat. Physiologia Plantarum. 151(3). 230–242. 70 indexed citations
13.
Motoda, Hirotoshi, Takayuki Sasaki, Yoshio Kano, et al.. (2007). The Membrane Topology of ALMT1, an Aluminum-Activated Malate Transport Protein in Wheat (Triticum aestivum). Plant Signaling & Behavior. 2(6). 467–472. 44 indexed citations
14.
Hoekenga, Owen A., Lyza Maron, Miguel A. Piñeros, et al.. (2006). AtALMT1 , which encodes a malate transporter, is identified as one of several genes critical for aluminum tolerance in Arabidopsis. Proceedings of the National Academy of Sciences. 103(25). 9738–9743. 459 indexed citations
15.
Ligaba, Ayalew, Maki Katsuhara, Peter R. Ryan, Mineo Shibasaka, & Hideaki Matsumoto. (2006). The BnALMT1 and BnALMT2 Genes from Rape Encode Aluminum-Activated Malate Transporters That Enhance the Aluminum Resistance of Plant Cells. PLANT PHYSIOLOGY. 142(3). 1294–1303. 196 indexed citations
16.
Delhaize, Emmanuel, Peter R. Ryan, Diane M. Hebb, et al.. (2004). Engineering high-level aluminum tolerance in barley with the ALMT1 gene. Proceedings of the National Academy of Sciences. 101(42). 15249–15254. 300 indexed citations
17.
Zhang, Wenhao, Peter R. Ryan, & Stephen D. Tyerman. (2004). Citrate-Permeable Channels in the Plasma Membrane of Cluster Roots from White Lupin. PLANT PHYSIOLOGY. 136(3). 3771–3783. 44 indexed citations
18.
Kataoka, Takahito, et al.. (2002). Several lanthanides activate malate efflux from roots of aluminium‐tolerant wheat. Plant Cell & Environment. 25(3). 453–460. 33 indexed citations
19.
Ryan, Peter R., Emmanuel Delhaize, & Davey L. Jones. (2001). Function and mechanism of organic anion exudation from plant roots. Annual Review of Plant Biology. 52. 527–560. 53 indexed citations
20.
Heath, Michéle C., Michael J. Bullard, H.T.H. Cromack, et al.. (1994). An assessment of the yield of Miscanthus sacchariflorus at three fertile sites in the UK.. Aspects of applied biology. 525–532. 3 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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