Paul A. Johnston

ORCID: 0000-0003-4182-0817
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About
Contact & Profiles
Research Areas
  • Wheat and Barley Genetics and Pathology
  • Plant Disease Resistance and Genetics
  • Plant-Microbe Interactions and Immunity
  • Chromosomal and Genetic Variations
  • Hearing Loss and Rehabilitation
  • Yeasts and Rust Fungi Studies
  • Genetics and Plant Breeding
  • Plant pathogens and resistance mechanisms
  • Noise Effects and Management
  • Berry genetics and cultivation research
  • Language Development and Disorders
  • Genetic Mapping and Diversity in Plants and Animals
  • Plant Pathogens and Resistance
  • Reading and Literacy Development
  • Cell Adhesion Molecules Research
  • Agriculture, Plant Science, Crop Management
  • Pharmacological Effects and Assays
  • Genetic and Environmental Crop Studies
  • Plant Pathogenic Bacteria Studies
  • Neurotransmitter Receptor Influence on Behavior
  • Renal Diseases and Glomerulopathies
  • Vasculitis and related conditions
  • Visual perception and processing mechanisms
  • EEG and Brain-Computer Interfaces
  • Phonetics and Phonology Research

Plant & Food Research
2004-2022

Cliniques Universitaires Saint-Luc
2021

University of Zurich
2021

University of Otago
2009

Southern Cross University
2003

New South Wales Department of Primary Industries
2003

University of California, San Francisco
1996-1999

W. M. Keck Foundation
1996-1998

St James's University Hospital
1993

University of Newcastle Australia
1987

Children with language-based learning impairments (LLIs) have major deficits in their recognition of some rapidly successive phonetic elements and nonspeech sound stimuli. In the current study, LLI children were engaged adaptive training exercises mounted as computer “games” designed to drive improvements “temporal processing” skills. With 8 16 hours during a 20-day period, improved markedly abilities recognize brief fast sequences speech

10.1126/science.271.5245.77 article EN Science 1996-01-05

Hordeum bulbosum L., a wild relative of barley (Hordeum vulgare L.), has been considered as valuable source genetic diversity for improvement. Since the 1990s, considerable number barley/H. introgression lines (IL)s generated, with segments introgressed from H. harboring diverse set desirable traits. However, efficient utilization these ILs hampered, largely due to lack suitable molecular tools their characterization and highly reduced interspecific recombination frequencies in region...

10.1016/j.molp.2015.05.004 article EN cc-by-nc-nd Molecular Plant 2015-05-15

In this paper, the details of processing algorithms used in a training program with language learning-impaired children (LLI's) are described. The utilized computer games, speech/language exercises, books-on-tape and educational CD-ROM's. Speech tracks these materials were processed using algorithms. During four week period, recognition both normal speech continually increased to near age-appropriate levels. We conclude that form is subject profound perceptual learning effects exhibits...

10.1109/86.712220 article EN IEEE Transactions on Rehabilitation Engineering 1998-01-01

Abstract Scald is a serious foliar disease that infects barley ( Hordeum vulgare L.) causing reduced yields and adversely affecting quality. A means to combat the breed cultivars possess genetic resistance. However, all known resistance alleles have so far originated from within primary genepool of barley. This reliance on H. ssp. spontaneum as sources may encourage virulent forms pathogen become established. To broaden base cultivated provide novel resistances many diseases we used species...

10.1111/j.1439-0523.2006.01253.x article EN Plant Breeding 2006-11-17

Stem rust, caused by Puccinia graminis f. sp. tritici, is an important disease on barley (Hordeum vulgare). Host resistance has effectively controlled stem primarily through use of gene Rpg1. However, virulence to Rpg1 present in North America, and a new race (TTKSK, or Ug99) from eastern Africa threatens production. A search for novel was previously conducted, interspecific breeding line (212Y1) with introgressed chromatin H. bulbosum identified as carrying races MCCF QCCJ. This study...

10.1094/phyto-99-4-0339 article EN Phytopathology 2009-03-09

Abstract Septoria speckled leaf blotch (SSLB), caused by passerinii , has become one of the most serious diseases barley in Upper Midwest region USA. The recombinant line 36L5 derived from a backcross susceptible cultivar ‘Emir’ and resistant Hordeum bulbosum parent Cb2920/4/Colch was found to be S. passerinii. Two doubled haploids were backcrossed cv.‘Emir’ obtain two BCF 2 populations for determining inheritance resistance progeny 2:3 families evaluated at seedling stage greenhouse...

10.1046/j.1439-0523.2003.00850.x article EN Plant Breeding 2003-10-01

A genetic map of barley with 224 AFLP and 39 simple sequence repeat (SSR) markers was constructed using a doubled haploid (DH) mapping population from cross between the varieties Tallon Kaputar. Linkage groups were assigned to individual chromosomes published locations SSR as reference points. This used identify linkage agronomic, disease, quality traits in barley. The population, which comprised 65 lines, tested range environments across Australia. Quantitative trait loci (QTLs) analyses...

10.1071/ar02238 article EN Australian Journal of Agricultural Research 2003-01-01

In this second paper on the use of secondary genepools in barley improvement, we describe characterisation leaf rust resistant recombinant lines (RLs) derived from Hordeum vulgare × H. bulbosum crosses. Twelve RLs were inoculated with and early stages disease development observed. Several showed complete resistance to pathogen, but others had a high level partial resistance, which may be durable. Some these tested yield trials determine effects introgressed chromatin quality. We conclude...

10.17221/3703-cjgpb article EN cc-by-nc Czech Journal of Genetics and Plant Breeding 2004-09-30

1. Plasma noradrenaline (NA) and adrenaline (AD) concentrations locomotor activity were measured in conscious normal adrenalectomized guinea-pigs before after injection of a single dose morphine (15 mg/kg) following precipitation withdrawal with naloxone 2 h later. Arterial blood samples obtained via carotid catheters inserted 3 days experiment. Normal given saline instead used as controls. 2. Increased occurred both intact morphine-treated guinea-pigs. 3. AD concentration was significantly...

10.1111/j.1440-1681.1987.tb01883.x article EN Clinical and Experimental Pharmacology and Physiology 1987-08-01

Journal Article Hypertension in adults with idiopathic glomerulonephritis and normal serum creatinine. A report from the MRC Glomerulonephritis Registry Get access P. A. Johnston, Johnston Department of Renal Medicine, St James's University HospitalLeeds, UK Correspondence offprint requests to: Dr Hospital. Beckett Street. Leeds LS9 7TF, Search for other works by this author on: Oxford Academic PubMed Google Scholar M. Davison Nephrology Dialysis Transplantation, Volume 8, Issue 1, 1993,...

10.1093/oxfordjournals.ndt.a092265 article EN Nephrology Dialysis Transplantation 1993-01-01

Abstract Aims Two introgression lines (ILs), 182Q20 and 200A12, which had chromosomal segments introgressed from Hordeum bulbosum in H. vulgare backgrounds, were identified to show seedling resistance against Puccinia hordei, possibly attributed two genes, Rph22 Rph26, respectively. This study characterized the phenotypic responses of genes P. hordei over different plant development stages. Methods Results Using visual fungal biomass assessments, ILs 182Q20, 200A12 four other barley...

10.1111/jam.15710 article EN Journal of Applied Microbiology 2022-07-11

Lr34 is an important adult plant resistance gene that effective against a number of wheat ( Triticum aestivum L.) diseases and has proved durable for over 100 yr. However, the energy requirements resistance, combined with pleiotrophic effect leaf tip necrosis, can result in reduced yield potential. To evaluate absence from elite breeding material, cross was made between similar‐yielding, milling cultivars ‘Conquest’ Lr34sus ) ‘Bakker Gold’ Lr34res ). Independent lines were carried forward...

10.2135/cropsci2016.03.0158 article EN Crop Science 2017-01-05
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