Vardis Ntoukakis
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View article: Identification of Race‐Specific, Clade‐Specific and Broad‐Spectrum Resistance to <scp> <i>Xanthomonas campestris</i> </scp> pv. <i>campestris</i> in <i>Brassica</i> Diversity Fixed Foundation Sets
Identification of Race‐Specific, Clade‐Specific and Broad‐Spectrum Resistance to <span> <i>Xanthomonas campestris</i> </span> pv. <i>campestris</i> in <i>Brassica</i> Diversity Fixed Foundation Sets Open
Black rot, caused by Xanthomonas campestris pv. campestris (Xcc), is the most damaging bacterial disease of vegetable brassicas ( Brassica oleracea ) worldwide. The prevalence of several genetically diverse Xcc races makes breeding for var…
View article: The <i>Arabidopsis</i> TIRome informs the design of artificial TIR (Toll/interleukin-1 receptor) domain proteins
The <i>Arabidopsis</i> TIRome informs the design of artificial TIR (Toll/interleukin-1 receptor) domain proteins Open
The TIR (Toll/interleukin-1 receptor) domain is an ancient protein module that functions in immune and cell death responses across the Tree of Life. TIR domains encoded by plants and prokaryotes function as enzymes to produce diverse small…
View article: The Arabidopsis TIRome informs the design of artificial TIR (Toll/interleukin-1 receptor) domain proteins
The Arabidopsis TIRome informs the design of artificial TIR (Toll/interleukin-1 receptor) domain proteins Open
The TIR (Toll/interleukin-1 receptor) domain is an ancient protein module that functions in immune and cell death responses across the Tree of Life. TIR domains encoded by plants and prokaryotes function as enzymes to produce diverse small…
View article: Exploration of phyllosphere microbiomes in wheat varieties with differing aphid resistance
Exploration of phyllosphere microbiomes in wheat varieties with differing aphid resistance Open
Background Leaf-associated microbes play an important role in plant development and response to exogenous stress. Insect herbivores are known to alter the phyllosphere microbiome. However, whether the host plant’s defense against insects i…
View article: Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance
Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance Open
Here we report draft-quality genome sequences for pathotype strains of eight plant-pathogenic bacterial pathovars: Xanthomonas campestris pv. asclepiadis , X. campestris pv. cannae , X. campestris pv. esculenti , X. campestris pv. nigromac…
View article: Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance
Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance Open
Here we report draft-quality genome sequences for pathotype strains of eight plant-pathogenic bacterial pathovars: Xanthomonas campestris pv. asclepiadis, X. campestris pv. cannae, X. campestris pv. esculenti, X. campestris pv. nigromacula…
View article: A subset of highly responsive transcription factors upon tomato infection by pepino mosaic virus
A subset of highly responsive transcription factors upon tomato infection by pepino mosaic virus Open
Plants have evolved well‐tuned surveillance systems, including complex defence mechanisms, to constrain pathogens. TFs are master regulators of host molecular responses against plant pathogens. While PepMV constitutes a major threat to the…
View article: Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance
Draft genome sequences for ten strains of Xanthomonas species that have phylogenomic importance Open
Here we report draft-quality genome sequences for pathotype strains of eight plant-pathogenic bacterial pathovars: Xanthomonas campestris pv. asclepiadis, X. campestris pv. cannae, X. campestris pv. esculenti, X. campestris pv. nigromacula…
View article: Expression of putative effectors of different <i>Xylella fastidiosa</i> strains triggers cell death‐like responses in various <i>Nicotiana</i> model plants
Expression of putative effectors of different <i>Xylella fastidiosa</i> strains triggers cell death‐like responses in various <i>Nicotiana</i> model plants Open
The wide host range of Xylella fastidiosa (Xf) indicates the existence of yet uncharacterized virulence mechanisms that help pathogens to overcome host defences. Various bioinformatics tools combined with prediction of the functions of put…
View article: Activation loop phosphorylation of a non-RD receptor kinase initiates plant innate immune signaling
Activation loop phosphorylation of a non-RD receptor kinase initiates plant innate immune signaling Open
Significance Protein kinases lacking Arg in the catalytic loop HxD motif (i.e., non-RD kinases) are associated with innate immune signaling across kingdoms. Phosphorylation activates plant immune receptor kinases (RKs), but the mechanistic…
View article: Clavibacter michiganensis Downregulates Photosynthesis and Modifies Monolignols Metabolism Revealing a Crosstalk with Tomato Immune Responses
Clavibacter michiganensis Downregulates Photosynthesis and Modifies Monolignols Metabolism Revealing a Crosstalk with Tomato Immune Responses Open
The gram-positive pathogenic bacterium Clavibacter michiganensis subsp. michiganensis (Cmm) causes bacterial canker disease in tomato, affecting crop yield and fruit quality. To understand how tomato plants respond, the dynamic expression …
View article: Immunity onset alters plant chromatin and utilizes EDA16 to regulate oxidative homeostasis
Immunity onset alters plant chromatin and utilizes EDA16 to regulate oxidative homeostasis Open
Perception of microbes by plants leads to dynamic reprogramming of the transcriptome, which is essential for plant health. The appropriate amplitude of this transcriptional response can be regulated at multiple levels, including chromatin.…
View article: ACTIVATION LOOP PHOSPHORYLATION OF A NON-RD RECEPTOR KINASE INITIATES PLANT INNATE IMMUNE SIGNALING
ACTIVATION LOOP PHOSPHORYLATION OF A NON-RD RECEPTOR KINASE INITIATES PLANT INNATE IMMUNE SIGNALING Open
Receptor kinases (RKs) play fundamental roles in extracellular sensing to regulate development and stress responses across kingdoms. In plants, leucine-rich repeat receptor kinases (LRR-RKs) function primarily as peptide receptors that reg…
View article: The bacterial biocontrol agent <i>Paenibacillus alvei</i> K165 confers inherited resistance to <i>Verticillium dahliae</i>
The bacterial biocontrol agent <i>Paenibacillus alvei</i> K165 confers inherited resistance to <i>Verticillium dahliae</i> Open
The biocontrol agent Paenibacillus alvei K165 was previously shown to protect Arabidopsis thaliana plants against Verticillium dahliae. Here we show that K165 also confers inherited immune resistance to V. dahliae. By performing a histone …
View article: Mediator Subunits MED16, MED14, and MED2 Are Required for Activation of ABRE-Dependent Transcription in Arabidopsis
Mediator Subunits MED16, MED14, and MED2 Are Required for Activation of ABRE-Dependent Transcription in Arabidopsis Open
The Mediator complex controls transcription of most eukaryotic genes with individual subunits required for the control of particular gene regulons in response to various perturbations. In this study, we reveal the roles of the plant Mediat…
View article: Novel markers for high-throughput protoplast-based analyses of phytohormone signaling
Novel markers for high-throughput protoplast-based analyses of phytohormone signaling Open
Phytohormones mediate most diverse processes in plants, ranging from organ development to immune responses. Receptor protein complexes perceive changes in intracellular phytohormone levels and trigger a signaling cascade to effectuate down…
View article: GCN5 modulates salicylic acid homeostasis by regulating H3K14ac levels at the 5′ and 3′ ends of its target genes
GCN5 modulates salicylic acid homeostasis by regulating H3K14ac levels at the 5′ and 3′ ends of its target genes Open
The modification of histones by acetyl groups has a key role in the regulation of chromatin structure and transcription. The Arabidopsis thaliana histone acetyltransferase GCN5 regulates histone modifications as part of the Spt-Ada-Gcn5 Ac…
View article: Plant–microbe interactions: tipping the balance
Plant–microbe interactions: tipping the balance Open
International Congress on Molecular Plant Microbe Interactions in Glasgow (2019) focuses on research that tackles the consequences of plant-microbe interactions, for both plant-mutualist and plant-pathogen scenarios.When organisms interact…
View article: Sink activity in Washington navel orange fruit borne on leafy and leafless inflorescences
Sink activity in Washington navel orange fruit borne on leafy and leafless inflorescences Open
Washington navel orange (WNO) (Citrus sinensis L. Osbeck) fruit borne on leafy (LY) inflorescences (with leaves) were confirmed to be stronger sinks based on their faster-growth rate during the 9 weeks after petal fall than fruit borne on …
View article: The Proteasome Acts as a Hub for Plant Immunity and Is Targeted by <i>Pseudomonas</i> Type III Effectors
The Proteasome Acts as a Hub for Plant Immunity and Is Targeted by <i>Pseudomonas</i> Type III Effectors Open
Recent evidence suggests that the ubiquitin-proteasome system is involved in several aspects of plant immunity and that a range of plant pathogens subvert the ubiquitin-proteasome system to enhance their virulence. Here, we show that prote…
View article: The Arabidopsis Protein Phosphatase PP2C38 Negatively Regulates the Central Immune Kinase BIK1
The Arabidopsis Protein Phosphatase PP2C38 Negatively Regulates the Central Immune Kinase BIK1 Open
Plants recognize pathogen-associated molecular patterns (PAMPs) via cell surface-localized pattern recognition receptors (PRRs), leading to PRR-triggered immunity (PTI). The Arabidopsis cytoplasmic kinase BIK1 is a downstream substrate of …
View article: The proteasome acts as a hub for local and systemic plant immunity in<i>Arabidopsis thaliana</i>and constitutes a virulence target of<i>Pseudomonas syringae</i>type-III effector proteins
The proteasome acts as a hub for local and systemic plant immunity in<i>Arabidopsis thaliana</i>and constitutes a virulence target of<i>Pseudomonas syringae</i>type-III effector proteins Open
Recent evidence suggests that the ubiquitin-proteasome system (UPS) is involved in several aspects of plant immunity and a range of plant pathogens subvert the UPS to enhance their virulence. Here, we show that proteasome activity is stron…
View article: Regulation of sucrose phosphate synthase in vascular bundles of Washington navel orange fruit (Citrus Sinensis L. Osbeck) by a protein kinase and a protein phosphatase
Regulation of sucrose phosphate synthase in vascular bundles of Washington navel orange fruit (Citrus Sinensis L. Osbeck) by a protein kinase and a protein phosphatase Open
Sucrose phosphate synthase (SPS) is activated by a novel ATP-dependent, Ca-independent kinase and inactivated by a protein phosphatase in vascular bundles isolated from citrus fruit (Citrus sinensis L. Osbeck, cv. Washington navel orange).…