A5002642579- Mycotoxins in Agriculture and Food
- Plant Pathogens and Fungal Diseases
- Plant-Microbe Interactions and Immunity
- Wheat and Barley Genetics and Pathology
- Plant Disease Resistance and Genetics
- Plant Pathogens and Resistance
- Plant and fungal interactions
- Plant Parasitism and Resistance
- Mycorrhizal Fungi and Plant Interactions
- Fungal Plant Pathogen Control
- Insect and Pesticide Research
- Plant Pathogenic Bacteria Studies
- Legume Nitrogen Fixing Symbiosis
- Powdery Mildew Fungal Diseases
- Nematode management and characterization studies
- Agriculture, Plant Science, Crop Management
- Plant Virus Research Studies
- Spectroscopy and Chemometric Analyses
- Plant Disease Management Techniques
- Carcinogens and Genotoxicity Assessment
- Plant nutrient uptake and metabolism
- Genetic Mapping and Diversity in Plants and Animals
- Yeasts and Rust Fungi Studies
- Insect Pest Control Strategies
- Pesticide Residue Analysis and Safety
Ghent University
2016-2025
Ghent University Hospital
2014-2021
University College Ghent
2009-2013
Vlaams Instituut voor Biotechnologie
2007
Abscisic acid (ABA) is one of the plant hormones involved in interaction between plants and pathogens. In this work, we show that tomato (Lycopersicon esculentum Mill. cv Moneymaker) mutants with reduced ABA levels (sitiens plants) are much more resistant to necrotrophic fungus Botrytis cinerea than wild-type (WT) plants. Exogenous application restored susceptibility B. sitiens increased WT These results indicate plays a major role cinerea. appeared interact functional defense response...
Abstract Plant defense mechanisms against necrotrophic pathogens, such as Botrytis cinerea, are considered to be complex and differ from those that effective biotrophs. In the abscisic acid-deficient sitiens tomato (Solanum lycopersicum) mutant, which is highly resistant B. accumulation of hydrogen peroxide (H2O2) was earlier stronger than in susceptible wild type at site infection. sitiens, H2O2 observed 4 h postinoculation (hpi), specifically leaf epidermal cell walls, where it caused...
Fusarium species, particularly graminearum and F. culmorum, are the main cause of trichothecene type B contamination in cereals. Data on distribution genotypes cereals Europe scattered time space. Furthermore, a common core set related variables (sampling method, host cultivar, previous crop, etc.) that would allow more effective analysis factors influencing spatial temporal population distribution, is lacking. Consequently, based available data, it difficult to identify chemotype spread at...
The rhizobacterium Pseudomonas aeruginosa 7NSK2 produces secondary metabolites such as pyochelin (Pch), its precursor salicylic acid (SA), and the phenazine compound pyocyanin. Both mutant KMPCH (Pch-negative, SA-positive) induced resistance to Botrytis cinerea in wild-type but not transgenic NahG tomato. SA-negative mutants of both strains lost capacity induce resistance. On tomato roots, produced SA phenylalanine ammonia lyase activity, while this was case for 7NSK2. In 7NSK2, is probably...
Root colonization by specific nonpathogenic bacteria can induce a systemic resistance in plants to pathogen infections. In bean, this kind of be induced the rhizobacterium Pseudomonas aeruginosa 7NSK2 and depends on production salicylic acid strain. model with grown perlite we demonstrated that 7NSK2-induced is equivalent inclusion 1 nM nutrient solution used latter treatment analyze molecular basis phenomenon. Hydroponic feeding solutions phenylalanine ammonia-lyase activity roots increased...
Fusarium head blight is a very important disease of small grain cereals with F. graminearum as one the most causal agents. It not only causes reduction in yield and quality but from human animal healthcare point view, it produces mycotoxins such deoxynivalenol (DON) which can accumulate to toxic levels. Little known about external triggers influencing DON production. In present work, combined vivo/in vitro approach was used test effect sub lethal fungicide treatments on Using dilution series...
A total of 174 cereal-based food products, 67 compound feeds and 19 feed raw materials were analysed for the occurrence deoxynivalenol, 3-acetyldeoxynivalenol, 15-acetyldeoxynivalenol, zearalenone, α-zearalenol, β-zearalenol, their respective masked forms, including deoxynivalenol-3-glucoside, zearalenone-4-glucoside, α-zearalenol-4-glucoside, β-zearalenol-4-glucoside zearalenone-4-sulfate. Fibre-enriched bread, bran-enriched cornflakes, popcorn oatmeal collected in Belgian supermarkets from...
The plant hormone abscisic acid (ABA) is involved in a wide variety of processes, including the initiation stress-adaptive responses to various environmental cues. Recently, ABA also emerged as central factor regulation and integration immune responses, although little known about underlying mechanisms. Aiming advance our understanding ABA-modulated disease resistance, we have analyzed impact, dynamics interrelationship classic defense salicylic (SA) during progression rice infection by leaf...
Abstract An LC-MS/MS method was developed and validated for the simultaneous determination of deoxynivalenol, zearalenone, T-2-toxin, HT-2-toxin metabolites, including 3-acetyldeoxynivalenol, 15-acetyldeoxynivalenol, deoxynivalenol-3-glucoside, α-zearalenol, β-zearalenol, zearalenone-4-glucoside, α-zearalenol-4-glucoside, β-zearalenol-4-glucoside zearalenone-4-sulfate in maize, wheat, oats, cornflakes bread. Extraction performed with acetonitrile/water/acetic acid (79/20/1, v/v/v) followed...
Priming refers to a mechanism whereby plants are sensitized respond faster and/or more strongly future pathogen attack. Here, we demonstrate that preexposure the green leaf volatile Z-3-hexenyl acetate (Z-3-HAC) primed wheat (Triticum aestivum) for enhanced defense against subsequent infection with hemibiotrophic fungus Fusarium graminearum. Bioassays showed that, after priming Z-3-HAC, ears accumulated up 40% fewer necrotic spikelets. Furthermore, leaves of seedlings significantly smaller...
Abstract Fusarium basal rot (FBR) is a soil-borne disease that affects Allium species worldwide. Although FBR has long been recognized as major constraint to the production of economically important species, information could support management remains scattered. In this review, current knowledge on causal agents, symptomology and epidemiology, impact, strategies synthesized. We highlight FPR associated with different complexes several which oxysporum F. proliferatum are most prevalent....
The development of UAVs and multispectral cameras has led to remote sensing applications with unprecedented spatial resolution. However, uncertainty remains on the radiometric calibration process for converting raw images surface reflectance. Several methods exist, but advantages disadvantages each are not well understood. We performed an empirical analysis five different calibrating a 10-band camera, MicaSense RedEdge MX Dual Camera System, by comparing spectrometer measurements taken in...
The role of salicylic acid (SA) was investigated in basal defence and induced resistance to powdery mildew ( Oidium neolycopersici ) grey mould Botrytis cinerea tomato Lycopersicon esculentum tobacco Nicotiana tabacum ). A comparison NahG transgenic (unable accumulate SA) their respective wild types revealed that tomato, SA not involved against O. but showed an enhanced susceptibility infection, the effect becoming more obvious as plants grew older. In contrast, played no B. , seemed...
Mycotoxins are well-known contaminants of several food- and feedstuffs, including silage maize for dairy cattle. Climate change year-to-year variations in climatic conditions may cause a shift the fungal populations infecting maize, therefore alter mycotoxin load. In this research, 257 samples were taken from fields across Flanders, Belgium, over course three years (2016-2018) analyzed 22 different mycotoxins using multi-mycotoxin liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
Although many phenylpropanoid pathway-derived molecules act as physical and chemical barriers to pests pathogens, comparatively little is known about their role in regulating plant immunity. To explore this research field, we transiently perturbed the pathway through application of CINNAMIC ACID-4-HYDROXYLASE (C4H) inhibitor piperonylic acid (PA). Using bioassays involving diverse show that transient C4H inhibition triggers systemic, broad-spectrum resistance higher plants without affecting...
Maize silage, which in Europe is the main feed for dairy cattle winter, can be contaminated by mycotoxins. Mycotoxigenic Fusarium spp. originating from field infections may survive badly sealed silages or re-infect at cutting edge during feed-out. In this way, mycotoxins produced persist silage process. addition, typical fungi such as Penicillium and Aspergillus conditions produce research, 56 maize Flanders were sampled over course of three years (2016–2018). The concentration 22 different...