A5072764420- Insect-Plant Interactions and Control
- Research on scale insects
- Plant Pathogens and Fungal Diseases
- Wheat and Barley Genetics and Pathology
- Forest Insect Ecology and Management
- Plant Disease Resistance and Genetics
- Yeasts and Rust Fungi Studies
- Plant Pathogens and Resistance
- Mycotoxins in Agriculture and Food
- Entomopathogenic Microorganisms in Pest Control
- Hymenoptera taxonomy and phylogeny
- Insect behavior and control techniques
- Phytoplasmas and Hemiptera pathogens
- Nematode management and characterization studies
- Mycorrhizal Fungi and Plant Interactions
- Insect Pest Control Strategies
- Antifungal resistance and susceptibility
- Insect Resistance and Genetics
- Insects and Parasite Interactions
- Fungal Plant Pathogen Control
- Plant Pathogenic Bacteria Studies
- Plant Virus Research Studies
- Insect Pheromone Research and Control
- Insect and Pesticide Research
- Plant-Microbe Interactions and Immunity
Aarhus University
2016-2025
University of Florida
2023
University of East Anglia
2023
University of California, Berkeley
2022
Agricultural Research Service
2015-2022
Generalitat Valenciana
2022
KU Leuven
2021
International Institute of Tropical Agriculture
2021
Universidad de La Laguna
2021
Lombardia Informatica (Italy)
2021
Isolates of recently spreading races yellow rust from wheat and triticale in Europe were analysed using virulence phenotypic data 2605 isolates sampled 12 countries between 2000 2014. A subset 239 was investigated by microsatellite markers. At least three non‐European origin, termed ‘Warrior’, ‘Kranich’ ‘Triticale aggressive’, identified the post‐2011 population. The Warrior race already present high frequencies first year detection most European to a large extent it replaced pre‐2011 In...
Analyses of large-scale population structure pathogens enable the identification migration patterns, diversity reservoirs or longevity populations, understanding current evolutionary trajectories and anticipation future ones. This is particularly important for long-distance migrating fungal such as Puccinia striiformis f.sp. tritici (PST), capable rapid spread to new regions crop varieties. Although a range recent PST invasions at continental scales are well documented, worldwide center...
A severe stem rust epidemic occurred in southern Ethiopia during November 2013 to January 2014, with yield losses close 100% on the most widely grown wheat cultivar, 'Digalu'. Sixty-four samples collected from regions were analyzed. meteorological model for airborne spore dispersal was used identify which likely have been infected postulated sites of initial infection. Based analyses 106 single-pustule isolates derived these samples, four races Puccinia graminis f. sp. tritici identified:...
We investigated whether the recent worldwide epidemics of wheat yellow rust were driven by races few clonal lineage(s) or populations divergent races. Race phenotyping 887 genetically diverse
Abstract Aegilops tauschii , the diploid wild progenitor of D subgenome bread wheat, is a reservoir genetic diversity for improving wheat performance and environmental resilience. Here we sequenced 242 Ae. accessions compared them to characterize genomic diversity. We found that rare lineage geographically restricted present-day Georgia contributed in independent hybridizations gave rise modern wheat. Through k -mer-based association mapping, identified discrete regions with candidate genes...
Abstract The wild relatives and progenitors of wheat have been widely used as sources disease resistance ( R ) genes. Molecular identification characterization these genes facilitates their manipulation tracking in breeding programmes. Here, we develop a reference-quality genome assembly the diploid relative Aegilops sharonensis use positional mapping, mutagenesis, RNA-Seq transgenesis to identify stem rust gene Sr62 , which has also transferred common wheat. This encodes tandem kinase,...
Understanding peroxidase function in plants is complicated by the lack of substrate specificity, high number genes, their diversity structure and our limited knowledge gene transcription translation. In present study we sequenced expressed sequence tags (ESTs) encoding novel heme‐containing class III peroxidases from Arabidopsis thaliana annotated 73 full‐length genes identified genome. total, transcripts 58 these have now been observed. The expression individual was assessed organ‐specific...
Rust fungi can overcome the effect of host resistance genes rapidly, and spores disperse long distance by wind. Here we demonstrate a foreign incursion similar strains wheat yellow rust fungus, Puccinia striiformis f. sp. tritici, in North America, Australia Europe less than 3 years. One strain defined identity at 15 virulence loci 130 amplified fragment length polymorphism (AFLP) fragments was exclusive to America (present since 2000) (since 2002). Another same phenotype, but differing two...
The biotrophic fungus Puccinia striiformis f.sp. tritici , a basidiomycete that causes yellow rust on wheat, is spread by wind‐dispersed spores. Analysis of amplified fragment length polymorphism (AFLP) variation showed the frequently migrates between UK, Germany, France and Denmark. There no biological evidence for sexual or parasexual reproduction under natural conditions, this was supported lack recombination, as revealed AFLP, over time area represented samples in study. A...
Quantitative real-time polymerase chain reaction differentiating 10 Fusarium spp. and Microdochium nivale or M. majus was applied to a total of 396 grain samples wheat, barley, triticale, oat, rye sampled across Denmark from 2003 2007, along with selected wheat barley 1957 2000, determine incidence abundance individual The mycotoxins deoxynivalenol (DON), nivalenol, zearalenone, T-2, HT-2 were quantified using liquid chromatography–double mass spectrometry. Major differences in the species...
Wheat stem rust, a devastating disease of wheat and barley caused by the fungal pathogen Puccinia graminis f. sp. tritici, was largely eradicated in Western Europe during mid-to-late twentieth century. However, isolated outbreaks have occurred recent years. Here we investigate whether lack resistance modern European varieties, increased presence its alternate host barberry changes climatic conditions could be facilitating resurgence. We report first rust occurrence United Kingdom nearly 60...
EFSA was asked to update the 2015 risk assessment on
Investigating the origin and dispersal pathways is instrumental to mitigate threats economic environmental consequences of invasive crop pathogens. In case Puccinia striiformis causing yellow rust on wheat, a number economically important invasions have been reported, e.g., spreading two aggressive high temperature adapted strains three continents since 2000. The combination sequence-characterized amplified region (SCAR) markers, which were developed from specific AFLP fragments,...
Effective disease management depends on timely and accurate diagnosis to guide control measures. The capacity distinguish between individuals in a pathogen population with specific properties such as fungicide resistance, toxin production virulence profiles is often essential inform approaches. genomics revolution has led technologies that can rapidly produce high-resolution genotypic information define individual variants of species. However, their application complex fungal pathogens...
The objective of this study was to investigate the re-emergence a previously important crop pathogen in Europe, Puccinia graminis f.sp. tritici, causing wheat stem rust. has been insignificant Europe for more than 60 years, but since 2016 it caused epidemics on both durum and bread local areas southern additional outbreaks Central- West Europe. prevalence three distinct genotypes/races many areas, Clade III-B (TTRTF), IV-B (TKTTF) IV-F (TKKTF), suggested clonal reproduction evolution by...
Abstract In accordance with the EFSA Strategy 2027 outlining need for fit‐for‐purpose protocols generic scientific assessments, Panel on Plant Health (PLH Panel) developed standard to harmonise problem formulation process and outputs mandates addressing recurrent questions. Three types of recurring plant health require assessments: (i) pest categorisation; (ii) commodity risk assessment purpose derogation provisions EU law (iii) quantitative assessment. The three are tailored appropriate...
Understanding the mode of temporal maintenance plant pathogens is an important domain microbial ecology research. Due to inconspicuous nature microbes, their cannot be studied directly through tracking individuals and progeny. Here, we suggest a series population genetic analyses on molecular marker variation in temporally spaced samples infer about relative contribution sexual reproduction, off-season survival migration pathogen populations. We used proposed approach investigate wheat...
Article 42 of the European Regulation (EU) 2016/2031, on protective measures against pests plants, introduces concept 'high risk plant products and other objects' that are identified basis a preliminary assessment to be followed by commodity assessment.Following request Commission, this Guidance was developed establish methodology when performing for high commodities (high objects).The performed EFSA will based information provided National Plant Protection Organisations non-EU countries...