P.A. O’Brien

2.8k citations

78 papers · 2.1k · h-index 23

Impact in

Cell Biology top 2%
- Plant Pathogens and Fungal Diseases
Plant Science top 1%
- Plant Pathogens and Resistance
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Mycorrhizal Fungi and Plant Interactions

Papers in

Plant Science 55
- Plant Pathogens and Resistance 33
- Plant Disease Resistance and Genetics 23
- Plant-Microbe Interactions and Immunity 8
- Legume Nitrogen Fixing Symbiosis 7
- Mycorrhizal Fungi and Plant Interactions 5
Molecular Biology 25
- Yeasts and Rust Fungi Studies 12

Co-authors: G.E.St.J. Hardy (28 shared papers)I.C. Tommerup (12 shared papers)Mark P. Dobrowolski (9 shared papers)J. McComb (10 shared papers)B. L. Shearer (11 shared papers)Joanne E. Barton (5 shared papers)Nari Williams (4 shared papers)Morag Glen (4 shared papers)
Journals: Plant Pathology (5 papers)Journal of Experimental Botany (3 papers)Photochemistry and Photobiology (3 papers)Forest Pathology (3 papers)Mycologia (2 papers)
Partner nations: Australia Ireland United States

In The Last Decade

P.A. O’Brien

77 papers receiving 2.0k citations

Peers

Replace Mathieu Paoletti with:

Mathieu Paoletti France

J.H.M. Schneider Netherlands

Robert L. Nichols United States

Eric Kemen Germany

Hajk‐Georg Drost Germany

Muhammad Iqbal Pakistan

Roger D. Magarey United States

Magnus Karlsson Sweden

John H. Andrews United States

P.A. O’Brien relative to Mathieu Paoletti France Mathieu Paoletti's profile →

Citations per field

00.5×2×3×4×

Mathieu Paoletti · 1×

×1.2 715/579

CB

×1.2 1k/1k

PS

×0.9 130/146

ENDOC

×3.2 104/33

PARAS

×4.0 12/3

HORTI

Citations per year

'16

'17

'18

'19

'20

'21

'22

'23

'24

'25

'26

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

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Showing the 20 most-cited of 78 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	258
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	142
3	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, B. L. Shearer, J. McComb, G.E.St.J. Hardy, P.A. O’Brien	2011	109
4	Molecular Characterization of Cryptosporidium Isolates from Humans and other Animals Using Random Amplified Polymorphic DNA Analysis American Journal of Tropical Medicine and Hygiene ·Una M. Morgan, Clare C. Constantine, P. J. O’Donoghue, Bruno P. Meloni, P.A. O’Brien, R.C.A. Thompson	1995	106
5	Analysis of variation in isolates of Rhizoctonia solani by random amplified polymorphic DNA assay Mycological Research ·Sean C. Duncan, Joanne E. Barton, P.A. O’Brien	1993	98
6	Three Clonal Lineages of Phytophthora cinnamomi in Australia Revealed by Microsatellites Phytopathology ·Mark P. Dobrowolski, I.C. Tommerup, B. L. Shearer, P.A. O’Brien	2003	88
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 ·M. Crone, J. McComb, P.A. O’Brien, G.E.St.J. Hardy	2013	86
8	NITROGEN DYNAMICS IN AN AUSTRALIAN SEMIARID GRASSLAND SOIL Ecology ·W. R. Cookson, Christoph Müller, P.A. O’Brien, Daniel V. Murphy, Pauline F. Grierson	2006	73
9	Are Sebacinaceae common and widespread ectomycorrhizal associates of Eucalyptus species in Australian forests? Mycorrhiza ·Morag Glen, I.C. Tommerup, Neale L. Bougher, P.A. O’Brien	2002	71
10	Selection for decreased sensitivity to phosphite in Phytophthora cinnamomi with prolonged use of fungicide Plant Pathology ·Mark P. Dobrowolski, B. L. Shearer, I.J. Colquhoun, P.A. O’Brien, G.E.St.J. Hardy	2008	69
11	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	63
12	DetectingPhytophthora Critical Reviews in Microbiology ·P.A. O’Brien, Nari Williams, G.E.St.J. Hardy	2009	62
13	Defining the phosphite-regulated transcriptome of the plant pathogen Phytophthora cinnamomi Molecular Genetics and Genomics ·Michaela King, Wayne Reeve, Mark B. Van der Hoek, Nari Williams, J. McComb, P.A. O’Brien, G.E.St.J. Hardy	2010	61
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	45
15	Soil bacterial functional diversity is associated with the decline of Eucalyptus gomphocephala Forest Ecology and Management ·Yiting Cai, P.A. Barber, B. Dell, P.A. O’Brien, Nari Williams, Barbara J. Bowen, G.E.St.J. Hardy	2010	41
16	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 L. Bougher, P.A. O’Brien	2001	40
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 ·M. Crone, J.A. McComb, P.A. O’Brien, G.E.St.J. Hardy	2012	35
18	Acclimation responses of Arabidopsis thaliana to sustained phosphite treatments Journal of Experimental Botany ·Oliver Berkowitz, Ricarda Jost, D. Kollehn, Ricarda Fenske, Patrick M. Finnegan, P.A. O’Brien, G.E.St.J. Hardy, Hans Lambers	2013	33
19	Stimulation of synthesis and release of swainosonine from transformed roots of Swainsona galegifolia Phytochemistry ·Tri Muji Ermayanti, Jennifer McComb, P.A. O’Brien	1994	26
20	Use of RAPD-PCR to isolate a species specific DNA probe forPhytophthora cinnamomi FEMS Microbiology Letters ·Mark P. Dobrowolski, P.A. O’Brien	1993	25

About P.A. O’Brien

P.A. O’Brien is a scholar working on Plant Science, Molecular Biology, Cell Biology, Endocrinology and Ecology, Evolution, Behavior and Systematics, having authored 78 papers that have together received 2.1k indexed citations. Recurring topics across this work include Plant Pathogens and Resistance (33 papers), Plant Disease Resistance and Genetics (23 papers), Plant Pathogens and Fungal Diseases (21 papers), Yeasts and Rust Fungi Studies (12 papers), Plant-Microbe Interactions and Immunity (8 papers), Plant and Fungal Interactions Research (7 papers), Legume Nitrogen Fixing Symbiosis (7 papers) and Mycorrhizal Fungi and Plant Interactions (5 papers). The work is most often cited by research in Cell Biology (715 citations), Plant Science (1.4k citations), Endocrinology (130 citations), Parasitology (104 citations) and Horticulture (12 citations). P.A. O’Brien has collaborated with scholars based in Australia, Ireland and United States. Frequent co-authors include G.E.St.J. Hardy, I.C. Tommerup, Mark P. Dobrowolski, J. McComb, B. L. Shearer, Joanne E. Barton, Nari Williams, Morag Glen, Neale L. Bougher and Sean C. Duncan. Their work appears in journals such as Plant Pathology, Journal of Experimental Botany, Photochemistry and Photobiology, Forest Pathology 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.

Explore authors with similar magnitude of impact

P.A. O’Brien

Impact in

Papers in i

In The Last Decade

P.A. O’Brien

Peers

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

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

All Works

About P.A. O’Brien

Explore authors with similar magnitude of impact

Papers in