European Journal of Plant Pathology

http://link.springer.com/journal/10658

List of Papers (Total 159)

RNA seq analysis of potato cyst nematode interactions with resistant and susceptible potato roots

Potato cyst nematodes (PCN) are important pests in crop production, especially since they persist in the soil and may affect further potato production for many years. Little is known about putative resistance and susceptibility targets as well as the general signaling in potato after interactions with PCN. Here we characterize a new potato breeding clone, SW-1015, found to harbor...

Fusarium ershadii sp. nov., a Pathogen on Asparagus officinalis and Musa acuminata

Two Fusarium strains, isolated from Asparagus in Italy and Musa in Vietnam respectively, proved to be members of an undescribed clade within the Fusarium solani species complex based on phylogenetic species recognition on ITS, partial RPB2 and EF-1α gene fragments. Macro- and micro-morphological investigations followed with physiological studies done on this new species: Fusarium...

HT-2 and T-2 toxins in Norwegian oat grains related to weather conditions at different growth stages

High concentrations of the mycotoxins HT-2 and T-2 (HT2 + T2), primarily produced by Fusarium langsethiae, have occasionally been detected in Norwegian oat grains. In this study, we identified weather variables influencing accumulation of HT2 + T2 in Norwegian oat grains. Oat grain samples from farmers’ fields were collected together with weather data (2004–2013). Spearman rank...

Genome analysis of Pseudomonas syringae pv. lachrymans strain 814/98 indicates diversity within the pathovar

Although many Pseudomonas syringae strains have already been determined, only a few genomes of strains belonging to pathovar lachrymans have been sequenced so far. In this study we report the genome sequence of P. syringae pv. lachrymans strain 814/98, which is highly virulent to cucumber. The genome size was estimated to be 6.58 Mb, with 57.97% GC content. In total, 6024 genes...

Phenolic profiles in apple leaves and the efficacy of selected phenols against fire blight (Erwinia amylovora)

The content and type of phenolic compounds in apple leaves as potential markers of resistance to fire blight were analysed. The amounts of phenolic acids and flavonoids were determined before and after E. amylovora inoculation of leaves of two cultivars: ‘Enterprise’ (highly resistant) and ‘Idared’ (highly susceptible). The basic levels of phenolics in both cultivars was similar...

Molecular characterization of the mild Soil-borne wheat mosaic virus-Pol1 isolate

Soil-borne wheat mosaic virus is the causal agent of leaf mosaic symptoms in cereals. The low virulence and limited propagation in infected plant tissues of a Polish isolate (SBWMV-Pol1) differ from the characteristics of other known isolates. The research aimed to clarify the effects of nucleotide sequence variability on the observed biological differences among the following...

Statistical modeling of long-term grapevine response to ‘Candidatus Phytoplasma solani’ infection in the field

Bois noir (BN) is the most widespread European grapevine yellows disease caused by ‘Candidatus Phytoplasma solani’. Although our knowledge of the mechanisms of interactions of this pathogenic bacteria with host is largely unknown, the plant-pathogen system of BN is commonly used as a model system for studying grapevine yellows diseases. We applied here a conceptual model of...

Verticillium wilt caused by Verticillium dahliae in woody plants with emphasis on olive and shade trees

Olive plantations and tree nurseries are economically and ecologically important agricultural sectors. However, Verticillium wilt, caused by Verticillium dahliae Kleb., is a serious problem in olive-growing regions and in tree nurseries worldwide. In this review we describe common and differentiating aspects of Verticillium wilts in some of the main economically woody hosts. The...

Identification of Xanthomonas species associated with bacterial leaf spot of tomato, capsicum and chilli crops in eastern Australia

Several species of Xanthomonas cause bacterial leaf spot, a disease that affects solanaceous crops worldwide. The diversity of 64 Australian isolates of Xanthomonas spp. associated with bacterial leaf spot in tomato, capsicum and chilli crops in eastern Australia was determined using multi-locus sequence analysis of atpD, dnaK, efp and gyrB genes, species-specific PCR assays and...

Distribution and persistence of Verticillium dahliae in the xylem of Norway maple and European ash trees

Verticillium dahliae colonizes the xylem vessels of susceptible host plants. Hence it can be expected that the distribution of the fungus as well as disease progress will be influenced by the anatomy of the xylem of that host. Here, we studied the spatial and temporal distribution of V. dahliae in relation to recovery from disease symptoms in young European ash (Fraxinus...

Isolation and phenotypic and morphological characterization of the first Podoviridae lytic bacteriophages ϕA38 and ϕA41 infecting Pectobacterium parmentieri (former Pectobacterium wasabiae)

Two bacteriophages, ϕA38 and ϕA41, infecting Pectobacterium parmentieri strain SCC 3193 (former Pectobacterium wasabiae strain SCC 3193) were isolated from arable soil samples collected in different regions of Poland. ϕA38 and ϕA41 have a typical morphology of the members of the family Podoviride and order Caudovirales, with a head diameter of ca. 60 nm and tail length of ca. 20...

The chemotaxis regulator pilG of Xylella fastidiosa is required for virulence in Vitis vinifera grapevines

Type IV pili of X. fastidiosa are regulated by pilG, a response regulator protein putatively involved in chemotaxis-like operon sensing stimuli through signal transduction pathways. To elucidate the roles of pilG in pathogenicity of X. fastidiosa, the pilG-deletion mutant XfΔpilG and complemented strain XfΔpilG-C were generated. While all strains had similar growth curves in...

Screening of alternative products for integrated pest management of cucurbit powdery mildew in Sweden

Cucurbit powdery mildew (CPM) is one of the most important plant protection problems in Swedish cucumber production. CPM fungi have developed resistance to the commonly used fungicide (Imazalil) rendering its current use less effective. We therefore screened a selection of alternative products, evaluating their ability to control CPM in seven small-scale, semi-commercial...

Hydrogen sulfide causes excision of a genomic island in Pseudomonas syringae pv. phaseolicola

Hydrogen sulfide (H2S) is known to be an important signalling molecule in both animals and plants, despite its toxic nature. In plants it has been seen to control stomatal apertures, so altering the ability of bacteria to invade plant tissues. Bacteria are known to generate H2S as well as being exposed to plant-generated H2S. During their interaction with plants pathogenic...

Detection and characterization of Tomato spotted wilt virus infecting field and greenhouse-grown crops in Zimbabwe

Tomato spotted wilt virus (TSWV), the type species of the genus Tospovirus in the family Bunyaviridae, is one of the most economically important emerging plant viruses worldwide. It causes over US$1 billion losses annually in open field and greenhouse-grown crops. A study was carried out to determine the geographical distribution, host range and phylogeny of TSWV in Zimbabwe...

Fast and reliable screening system to preselect candidate Dickeya solani Tn5 mutants in plant tissue-induced genes

Here, we present a simple and fast screening method to preselect candidate Dickeya solani Tn5 mutants which carry transposon insertions in plant tissue-induced genes for the follow-up studies. The described method is faster and cost-effective in comparison to standard IVET, expression microarrays and RNAseq, and it does not require any specialized laboratory equipment and/or...

The Eurotiomycete Apinisia graminicola as the causal agent of a leaf spot disease on the energy crop Miscanthus x giganteus in Northern Germany

Miscanthus x giganteus is a fast growing, perennial energy crop for temperate climates. Because of its high annual biomass production rates and its characteristics as a low-input crop, an expansion of field cultivation can be anticipated to cover increasing demands for sustainable biomass production. However, knowledge about pathogens that could have an impact on biomass...

Phytophthora infestans effector Pi14054 is a novel candidate suppressor of host silencing mechanisms

Phytophthora infestans is the oomycete pathogen responsible for the devastating late blight disease on potato and tomato. It can also infect the model solanaceous plant Nicotiana benthamiana. P. infestans secretes, and translocates into host cells, an array of RxLR class effectors potentially involved in diverse functions that facilitate infection of host plants. Intensive...

Subcelullar localization of proteins associated with Prune dwarf virus replication

Prune dwarf virus (PDV) is one of the most dangerous pathogens of fruit trees worldwide. One of the most important proteins required for PDV infection is replicase. (P1 protein) which anchored viral RNA and builds replication complex along with RNA depended polymerase. Despite the importance of PDV as a pathogen, our knowledge regarding tissue/cellular localization and structure...

Virulence structure of the Blumeria graminis DC.f. sp. avenae populations occurring in Poland across 2010–2013

The aim of the present study was to determine the virulence structure of powdery mildew of oats (Blumeria graminis DC.f. sp. avena) in Poland in the years 2010–2013. For this purpose, powdery mildew isolates were collected from three experimental stations in Poland. To assess the virulence of the isolates, eight oat varieties with different responses to the pathogen were used...

Fusarium head blight incidence and detection of Fusarium toxins in wheat in relation to agronomic factors

We investigated incidences of Fusarium head blight (FHB) and concentrations of six mycotoxins (deoxynivalenol, nivalenol, 3-acetyldeoxynivalenol, T-2 toxin, HT-2 toxin and zearalenone) in wheat from 2010 to 2013. Field trials were conducted at the Experimental Station of Cultivar Testing in Chrząstowo, Poland (53o11’N, 17o35’E). We examined the effects of four agronomic factors...

Occurrence and phylogenetic analysis of allexiviruses identified on garlic from China, Spain and Poland commercially available on the polish retail market

Garlic plants can be infected by different viruses including eight which belong to the genus Allexivirus, family Alphaflexiviridae. The aim of the research conducted was to detect and identify the allexiviruses GarV-A, GarV-B, GarV-C, GarV-D, GarV-X, GarMbFV and ShVX in garlic (Allium sativum L.) bulbs imported into Poland from China and Spain, and those growing in Poland by...