P.A. O’Brien

2.5k citations

62 papers · 2.1k · h-index 23

Impact in

Plant Science top 2%
- Plant Pathogens and Resistance
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Mycorrhizal Fungi and Plant Interactions
Parasitology top 5%
- Parasitic Infections and Diagnostics

Papers in

Plant Science 35
- Plant Pathogens and Resistance 19
- Plant Disease Resistance and Genetics 9
- Mycorrhizal Fungi and Plant Interactions 4
- Plant-Microbe Interactions and Immunity 2
- Plant nutrient uptake and metabolism 1
Molecular Biology 7
- Yeasts and Rust Fungi Studies 4
- Plant tissue culture and regeneration 3

Co-authors: Giles E. St. J. Hardy (25 shared papers)I.C. Tommerup (12 shared papers)Mark P. Dobrowolski (8 shared papers)Jen A. McComb (10 shared papers)Bryan L. Shearer (9 shared papers)Joanne E. Barton (5 shared papers)Nari Williams (4 shared papers)Neale Lorne Bougher (4 shared papers)
Journals: Plant Pathology (5 papers)Forest Pathology (3 papers)Journal of Experimental Botany (3 papers)Forest Ecology and Management (2 papers)Mycologia (2 papers)
Partner nations: Australia Iran Germany

In The Last Decade

P.A. O’Brien

60 papers receiving 1.9k citations

Peers

Countries citing papers authored by P.A. O’Brien

Since Specialization

Citations

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

Fields of papers citing papers by P.A. O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside P.A. O’Brien, 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 P.A. O’Brien Line = papers co-authored together P.A. O’Brien links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 62 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Biological control of plant diseases Australasian Plant Pathology ·P.A. O’Brien	2017	298
2	Myostatinand its implications on animal breeding: a review Animal Genetics ·R. H. S. Bellinge, David A. Liberles, S.P.A. Iaschi, P.A. O’Brien, Guan K. Tay	2005	157
3	Molecular Characterization of Cryptosporidium Isolates from Humans and other Animals Using Random Amplified Polymorphic DNA Analysis American Journal of Tropical Medicine and Hygiene ·Una Ryan, Clare C. Constantine, P. J. O’Donoghue, Bruno P. Meloni, P.A. O’Brien, R.C.A. Thompson	1995	116
4	Phosphite primed defence responses and enhanced expression of defence genes in Arabidopsis thaliana infected with Phytophthora cinnamomi Plant Pathology ·Leila Eshraghi, Jonathan P. Anderson, Nader Aryamanesh, Bryan L. Shearer, Jen A. McComb, Giles E. St. J. Hardy, P.A. O’Brien	2011	114
5	Analysis of variation in isolates of Rhizoctonia solani by random amplified polymorphic DNA assay Mycological Research ·Joanne E. Barton, P.A. O’Brien +1 other	1993	104
6	Three Clonal Lineages of Phytophthora cinnamomi in Australia Revealed by Microsatellites Phytopathology ·Mark P. Dobrowolski, I.C. Tommerup, Bryan L. Shearer, P.A. O’Brien	2003	98
7	Survival of Phytophthora cinnamomi as oospores, stromata, and thick-walled chlamydospores in roots of symptomatic and asymptomatic annual and herbaceous perennial plant species Fungal Biology ·Michael Crone, Jen A. McComb, P.A. O’Brien, Giles E. St. J. Hardy	2013	97
8	Are Sebacinaceae common and widespread ectomycorrhizal associates of Eucalyptus species in Australian forests? Mycorrhiza ·Morag Glen, I.C. Tommerup, Neale Lorne Bougher, P.A. O’Brien	2002	78
9	NITROGEN DYNAMICS IN AN AUSTRALIAN SEMIARID GRASSLAND SOIL Ecology ·W. R. Cookson, Christoph Müller, P.A. O’Brien, Daniel Vaughan Murphy, Pauline F. Grierson	2006	77
10	Selection for decreased sensitivity to phosphite in Phytophthora cinnamomi with prolonged use of fungicide Plant Pathology ·Mark P. Dobrowolski, Bryan L. Shearer, I.J. Colquhoun, P.A. O’Brien, Giles E. St. J. Hardy	2008	73
11	Detecting Phytophthora Critical Reviews in Microbiology ·P.A. O’Brien, Nari Williams, Giles E. St. J. Hardy	2009	69
12	Non-Mendelian Inheritance Revealed in a Genetic Analysis of Sexual Progeny of Phytophthora cinnamomi with Microsatellite Markers Fungal Genetics and Biology ·Mark P. Dobrowolski, I.C. Tommerup, Harley D. Blakeman, P.A. O’Brien	2002	67
13	Defining the phosphite-regulated transcriptome of the plant pathogen Phytophthora cinnamomi Molecular Genetics and Genomics ·Michaela King, Wayne Gerald Reeve, Mark B. Van der Hoek, Nari Williams, Jen A. McComb, P.A. O’Brien, Giles E. St. J. Hardy	2010	63
14	Reliability of RAPD fingerprinting of three basidiomycete fungi, Laccaria, Hydnangium and Rhizoctonia Mycological Research ·I.C. Tommerup, Joanne E. Barton, P.A. O’Brien	1995	55
15	Interspecific and intraspecific variation of ectomycorrhizal fungi associated with Eucalyptus ecosystems as revealed by ribosomal DNA PCR-RFLP Mycological Research ·Morag Glen, I.C. Tommerup, Neale Lorne Bougher, P.A. O’Brien	2001	44
16	Soil bacterial functional diversity is associated with the decline of Eucalyptus gomphocephala Forest Ecology and Management ·Yiting Cai, Paul Anthony Barber, Bernard Dell, P.A. O’Brien, Nari Williams, Barbara J. Bowen, Giles E. St. J. Hardy	2010	42
17	Annual and herbaceous perennial native A ustralian plant species are symptomless hosts of P hytophthora cinnamomi in the E ucalyptus marginata (jarrah) forest of W estern A ustralia Plant Pathology ·Michael Crone, J.A. McComb, P.A. O’Brien, Giles E. St. J. Hardy	2012	37
18	Acclimation responses of Arabidopsis thaliana to sustained phosphite treatments Journal of Experimental Botany ·Oliver Berkowitz, Ricarda Jost, D. Kollehn, Ricarda Fenske, Patrick Michael Finnegan, P.A. O’Brien, Giles E. St. J. Hardy, Hans Lambers	2013	35
19	Stimulation of synthesis and release of swainosonine from transformed roots of Swainsona galegifolia Phytochemistry ·Tri Muji Ermayanti, Jennifer A. McComb, P.A. O’Brien	1994	33
20	Use of RAPD-PCR to isolate a species specific DNA probe for Phytophthora cinnamomi FEMS Microbiology Letters ·Mark P. Dobrowolski, P.A. O’Brien	1993	28

About P.A. O’Brien

P.A. O’Brien is a scholar working on Plant Science, Molecular Biology, Clinical Biochemistry, Statistics, Probability and Uncertainty and Parasitology, having authored 62 papers that have together received 2.1k indexed citations. Recurring topics across this work include Plant Pathogens and Resistance (19 papers), Plant Disease Resistance and Genetics (9 papers), Mycorrhizal Fungi and Plant Interactions (4 papers), Yeasts and Rust Fungi Studies (4 papers), Plant tissue culture and regeneration (3 papers), Plant-Microbe Interactions and Immunity (2 papers), Plant nutrient uptake and metabolism (1 paper) and Soil Carbon and Nitrogen Dynamics (1 paper). The work is most often cited by research in Plant Science (1.0k citations), Parasitology (104 citations), Cell Biology (87 citations), Soil Science (68 citations) and Genetics (124 citations). P.A. O’Brien has collaborated with scholars based in Australia, Iran and Germany. Frequent co-authors include Giles E. St. J. Hardy, I.C. Tommerup, Mark P. Dobrowolski, Jen A. McComb, Bryan L. Shearer, Joanne E. Barton, Nari Williams, Neale Lorne Bougher, Morag Glen and Guan K. Tay. Their work appears in journals such as Plant Pathology, Forest Pathology, Journal of Experimental Botany, Forest Ecology and Management and Mycologia.

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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