Graham O’Hara

4.4k total citations
99 papers, 2.8k citations indexed

About

Graham O’Hara is a scholar working on Plant Science, Agronomy and Crop Science and Ecology. According to data from OpenAlex, Graham O’Hara has authored 99 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Plant Science, 46 papers in Agronomy and Crop Science and 16 papers in Ecology. Recurrent topics in Graham O’Hara's work include Legume Nitrogen Fixing Symbiosis (78 papers), Agronomic Practices and Intercropping Systems (40 papers) and Nematode management and characterization studies (24 papers). Graham O’Hara is often cited by papers focused on Legume Nitrogen Fixing Symbiosis (78 papers), Agronomic Practices and Intercropping Systems (40 papers) and Nematode management and characterization studies (24 papers). Graham O’Hara collaborates with scholars based in Australia, United States and Brazil. Graham O’Hara's co-authors include John Howieson, M. J. Dilworth, Roy M. Daniel, A. R. Glenn, Ravi Tiwari, J.G. Howieson, Nantakorn Boonkerd, Wayne Reeve, Ron Yates and Jason J. Terpolilli and has published in prestigious journals such as Proceedings of the National Academy of Sciences, SHILAP Revista de lepidopterología and The Science of The Total Environment.

In The Last Decade

Graham O’Hara

98 papers receiving 2.7k citations

Peers

Countries citing papers authored by Graham O’Hara

Since Specialization

Citations

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

Fields of papers citing papers by Graham O’Hara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Graham O’Hara. 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 Graham O’Hara. The network helps show where Graham O’Hara may publish in the future.

Co-authorship network of co-authors of Graham O’Hara

This figure shows the co-authorship network connecting the top 25 collaborators of Graham O’Hara. A scholar is included among the top collaborators of Graham O’Hara 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 Graham O’Hara. Graham O’Hara 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

#	Work	Indexed citations
1	Closed genomes of commercial inoculant rhizobia provide a blueprint for management of legume inoculation 2025 ·Applied and Environmental Microbiology ·(unknown), Graham O’Hara, Joshua P. Ramsay, Jason J. Terpolilli	3
2	The impact of agricultural intensification on legume seeds with physical dormancy in sustainable farming systems. A review 2025 ·Agronomy for Sustainable Development ·(unknown), John Howieson, Ron Yates, Hayley C. Norman, Graham O’Hara, Ganesh K. Jaganathan	0
3	Rhizobial genetic and genomic resources for sustainable agriculture 2024 ·Microbiology Australia ·(unknown), Graham O’Hara, Joshua P. Ramsay, Jason J. Terpolilli	1
4	The putative vacuolar processing enzyme gene TaVPE3cB is a candidate gene for wheat stem pith-thickness 2023 ·Theoretical and Applied Genetics ·(unknown), Yun Zhao, Shanjida Rahman, Maoyun She, Jingjuan Zhang, Rongchang Yang, Shahidul Islam, Graham O’Hara, Rajeev K. Varshney, Hang Liu, Hongxiang Ma, Wujun Ma	4
5	Current Progress and Future Prospect of Wheat Genetics Research towards an Enhanced Nitrogen Use Efficiency 2023 ·Plants ·Yun Zhao, Shahidul Islam, (unknown), Jingjuan Zhang, Graham O’Hara, Masood Anwar, Wujun Ma	6
6	Physiological and cannabinoid responses of hemp (Cannabis sativa) to rock phosphate dust under tropical conditions 2023 ·Functional Plant Biology ·(unknown), Omid Ansari, G.E.St.J. Hardy, John Howieson, Graham O’Hara, Katinka X. Ruthrof	4
7	Competition in the Phaseolus vulgaris-Rhizobium symbiosis and the role of resident soil rhizobia in determining the outcomes of inoculation 2023 ·Plant and Soil ·(unknown), (unknown), Graham O’Hara, Wayne Reeve, John Howieson, Jason J. Terpolilli	10
8	Rethinking soil water repellency and its management 2019 ·Plant Ecology ·Katinka X. Ruthrof, A. Hopkins, (unknown), Graham O’Hara, R.W. Bell, David J. Henry, Rachel J. Standish, Mark Tibbett, John Howieson, Treena I. Burgess, R.J. Harper	14
9	Diversity of endemic rhizobia on Christmas Island: Implications for agriculture following phosphate mining 2018 ·Systematic and Applied Microbiology ·Sofie E. De Meyer, Katinka X. Ruthrof, (unknown), A. Hopkins, G.E.St.J. Hardy, Graham O’Hara, John Howieson	6
10	Potassium amendment increases biomass and reduces heavy metal concentrations in Lablab purpureus after phosphate mining 2017 ·Australasian Journal of Paramedicine ·Katinka X. Ruthrof, Joseph B. Fontaine, (unknown), (unknown), Graham O’Hara, J. McComb, G.E.St.J. Hardy, J.G. Howieson	2
11	Evolutionary persistence of tripartite integrative and conjugative elements 2017 ·Plasmid ·Timothy L. Haskett, Joshua P. Ramsay, (unknown), John T. Sullivan, Graham O’Hara, Jason J. Terpolilli	17
12	High-quality permanent draft genome sequence of Ensifer medicae strain WSM244, a microsymbiont isolated from Medicago polymorpha growing in alkaline soil 2015 ·Standards in Genomic Sciences ·Julie Ardley, Rui Tian, Graham O’Hara, R. Seshadri, T. B. K. Reddy, Amrita Pati, Tanja Woyke, Victor Markowitz, Natalia Ivanova, Nikos C. Kyrpides, John Howieson, Wayne Reeve	1
13	Genome sequence of the acid-tolerant Burkholderia sp. strain WSM2232 from Karijini National Park, Australia 2013 ·Standards in Genomic Sciences ·Robert Walker, Elizabeth Watkin, Rui Tian, Lambert Bräu, Graham O’Hara, Lynne Goodwin, James Han, T. B. K. Reddy, Marcel Huntemann, Amrita Pati, Tanja Woyke, Konstantinos Mavromatis, Victor Markowitz, Natalia Ivanova, Nikos C. Kyrpides, Wayne Reeve	2
14	A basis for the development of an inferior N2 fixation phenotype in root nodule bacteria following lateral transfer of symbiotic genes 2009 ·Murdoch Research Repository (Murdoch University) ·K.G. Nandasena, Graham O’Hara, Ravi Tiwari, John Howieson	1
15	In situ lateral transfer of symbiosis islands results in rapid evolution of diverse competitive strains of mesorhizobia suboptimal in symbiotic nitrogen fixation on the pasture legume Biserrula pelecinus L. 2007 ·Environmental Microbiology ·K.G. Nandasena, Graham O’Hara, Ravi Tiwari, (unknown), John Howieson	92
16	Ferroplasma cupricumulans sp. nov., a novel moderately thermophilic, acidophilic archaeon isolated from an industrial-scale chalcocite bioleach heap 2006 ·Extremophiles ·(unknown), Peter D. Franzmann, Graham O’Hara, Jason J. Plumb	49
17	Techniques for the selection and development of elite inoculant strains of Rhizobium leguminosarum in southern Australia 2000 ·Symbiosis ·J.G. Howieson, (unknown), (unknown), Graham O’Hara	36
18	Wheat production and soil chemical properties of organic and conventional paired sites in Western Australia 1996 ·Murdoch Research Repository (Murdoch University) ·(unknown), R.W. Bell, Graham O’Hara	3
19	The adaptive acid tolerance response in root nodule bacteria and Escherichia coli 1994 ·Archives of Microbiology ·Graham O’Hara, A. R. Glenn	53
20	Iron‐deficiency specifically limits nodule development in peanut inoculated with Bradyrhizobium sp. 1988 ·New Phytologist ·Graham O’Hara, M. J. Dilworth, Nantakorn Boonkerd, Preeda Parkpian	92

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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