A5055453271- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Fungal Diseases
- Legume Nitrogen Fixing Symbiosis
- Phytoplasmas and Hemiptera pathogens
- Insect-Plant Interactions and Control
- Plant Parasitism and Resistance
- Entomopathogenic Microorganisms in Pest Control
- Plant pathogens and resistance mechanisms
- Plant Virus Research Studies
- Plant Pathogens and Resistance
- Transgenic Plants and Applications
- Slime Mold and Myxomycetes Research
- Greenhouse Technology and Climate Control
- Mycorrhizal Fungi and Plant Interactions
- Fungal Infections and Studies
- Research on scale insects
- Plant Molecular Biology Research
- Infections and bacterial resistance
Netherlands Food and Consumer Product Safety Authority
2022-2025
Utrecht University
2014-2021
Agriculture and Food
2017
Commonwealth Scientific and Industrial Research Organisation
2017
Microbe- or host damage-derived patterns mediate activation of pattern-triggered immunity (PTI) in plants. Microbial virulence factor (effector)-triggered (ETI) constitutes a second layer plant protection against microbial attack. Various necrosis and ethylene-inducing peptide 1 (Nep1)-like proteins (NLPs) produced by bacterial, oomycete fungal microbes are phytotoxic factors that exert immunogenic activities through phytotoxin-induced cell damage. We here show multiple cytotoxic NLPs also...
Significance Peptide fragments of Nep1-like proteins (NLPs), occurring in diverse microorganisms three different kingdoms life, were found to trigger immunity the model plant Arabidopsis , indicating that they act as a microbe-associated molecular pattern (MAMP). A synthetic peptide 24 aa from central part downy mildew HaNLP3 protein was activate immune system and resistance this pathogen. Strikingly, not only peptides oomycete NLPs, but also those bacteria fungi shown MAMP. This...
The self-association of Toll/interleukin-1 receptor/resistance protein (TIR) domains has been implicated in signaling plant and animal immunity receptors. Structure-based studies identified different TIR-domain dimerization interfaces required for the nucleotide-binding oligomerization domain-like receptors (NLRs) L6 from flax disease resistance RPS4 Arabidopsis Here we show that crystal structure TIR domain NLR suppressor npr1-1, constitutive 1 (SNC1) contains both an L6-like interface...
Curtobacterium flaccumfaciens pv. (Cff), a European quarantine organism, is the causal agent of bacterial wilt in several members Fabaceae family (Osdaghi et al., 2020). Recently, Cff findings have been reported on continent (Tarakanov 2022; EPPO 2024). In August 2024, following finding an imported common bean seed lot, asymptomatic plants were sampled from three fields Netherlands, ranging approximately 0.5 to 4.8 ha size, where crop was cultivated for human consumption. Each sample...
Loss of function mutations particular plant MILDEW RESISTANCE LOCUS O (MLO) genes confer durable and broad-spectrum penetration resistance against powdery mildew fungi. Here, we combined genetic, transcriptomic metabolomic analyses to explore the defense mechanisms in fully resistant Arabidopsis thaliana mlo2 mlo6 mlo12 triple mutant. We found that this genotype unexpectedly overcomes requirement for indolic antimicrobials defense-related secretion, which are critical incomplete single...
VALITEST is an EU‐funded project built to improve the reliability of diagnostic tests performed in plant health laboratories across European and Mediterranean region. The undertaken by a consortium 16 partners composed research institutions, private companies (such as kit providers), national protection organizations one intergovernmental organization (EPPO). Current harmonized procedures for validation test performance studies will be improved based on experience gained from including...
<title>Abstract</title> In 2018, during an annual survey in the Netherlands, <italic>Ralstonia solanacearum</italic> phylotype II (phy II) was found asymptomatic greenhouse rose plants at three geographic locations. These findings were remarkable, since previous of <italic>Ralstonia</italic> sp. always concerned pseudosolanacearum</italic> I I). Therefore, no information available on virulence <italic>R</italic>. <italic>solanacearum</italic> phy rose. this study, isolates PD 7421 and 7394,...
Ralstonia pseudosolanacearum, a European Union quarantine organism, was until recently absent in the aquatic environments and outdoor cultivation systems of region. This bacterium only sporadically reported restricted greenhouse some EU countries. In this paper, we report first findings R. pseudosolanacearum (phylotype I) surface water two distinct geographic locations Netherlands 2020. 2021, population ranged from 104 to 106 CFU/liter. An inoculum reservoir for these wild bittersweet plant...
Plants are able to detect insect eggs deposited on leaves. In Arabidopsis, of the butterfly species Pieris brassicae (common name large white) induce plant defenses and activate salicylic acid (SA) pathway. We previously discovered that oviposition triggers a systemic acquired resistance (SAR) against bacterial hemibiotroph pathogen Pseudomonas syringae. Here, we show or treatment with egg extract (EE) SAR fungal necrotroph Botrytis cinerea BMM oomycete Hyaloperonospora arabidopsidis Noco2....
Xanthomonas citri pv. and aurantifolii are responsible for citrus bacterial canker. The trade of fruit is recognized as one the seven X. introduction pathways. Under current European Union phytosanitary measures, likelihood these pathovars being introduced into Mediterranean region via infected rated unlikely. To closely monitor commercial flow fruit, imported lots that contained fruits with canker symptoms were quarantined, a sample was sent laboratory analysis. Survey results revealed...
A confusingly labeled water-milfoil of obscure status, known only in cultivation, is here formally described as a new species, Myriophyllum rubricaule Valk. & Duist. sp. nov. This species has fully replaced M. aquaticum the horticultural trade Europe since addition to list invasive alien Union concern (EU regulation no. 1143/2014) 2016. manuscript provides morphological description nov., and its distinction from further supported by molecular data (chloroplast nuclear loci).
Abstract In 2018, during an annual survey in the Netherlands, Ralstonia solanacearum phylotype II (phy II) was found asymptomatic greenhouse rose plants at three geographic locations. These findings were remarkable, since previous of sp. always concerned pseudosolanacearum I I). Therefore, no information available on virulence R. phy rose. this study, isolates PD 7421 and 7394, isolated 2018 from ornamental ( Rosa spp.), assessed for their two cultivars (“Armando” “Red Naomi”) temperatures....
Ensuring the reliability of diagnostic activities is an essential cornerstone plant health strategies to reduce risk entry and spread pests in a region ultimately their impacts. Diagnostic tests should be validated ensure that they are fit for purpose. Validation usually done by laboratories, although companies commercializing kits also produce validation data products. Due high number pest, matrix, method combinations given significant resources required validate tests, it shared with...