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A New Online Resource to Monitor New or Emerging Plant Pests: MEDISYS Media Monitoring and the Case of Xylella fastidiosa
The European Food Safety Authority has established a horizon scanning exercise for plant pests by automated monitoring of open-source media. The news sources are screened using the publicly accessi...
A Single Regulator Mediates Strategic Switching between Attachment/Spread and Growth/Virulence in the Plant Pathogen Ralstonia solanacearum
The PhcA virulence regulator in the vascular wilt pathogen Ralstonia solanacearum responds to cell density via quorum sensing. To understand the timing of traits that enable R. solanacearum to esta...
BREEDING, GENETIC AND GENOMIC OF CITRUS FOR DISEASE RESISTANCE
Although the citriculture is one of the most important economic activities in Brazil, it is based on a small number of varieties. This fact has contributed for the vulnerability of the culture rega...
Colony aggregation and biofilm formation in xylem chemistry-based media for Xylella fastidiosa
Two chemically defined media based on xylem fluid chemistry were developed for Xylella fastidiosa. These media were tested and compared to chemically defined media XDM2, XDM4 and XF-26. New media w...
Differentiation of Xylella fastidiosa Strains via Multilocus Sequence Analysis of Environmentally Mediated Genes (MLSA-E)
Isolates of the plant pathogen Xylella fastidiosa are genetically very similar, but studies on their biological traits have indicated differences in virulence and infection symptomatology. Taxonomi...
EXTRACELLULAR GENOMIC DNA MEDIATES ENHANCEMENT OF XYLELLA FASTIDIOSA BIOFILM FORMATION IN VITRO
Xylella fastidiosa (Xf) produces extracellular DNA in PD3 liquid medium. This extracellular DNA could enhance biofilm formation, a factor in successful establishment of Xf in planta. The relative a...
Genomics and X-ray microanalysis indicate that Ca2+ and thiols mediate the aggregation and adhesion of Xylella fastidiosa
The availability of the genome sequence of the bacterial plant pathogen Xylella fastidiosa, the causal agent of citrus variegated chlorosis, is accelerating important investigations concerning its ...
Genomics-based design of defined growth media for the plant pathogen Xylella fastidiosa
Based on the genetic analysis of the phytopathogen Xylella fastidiosa genome, five media with defined composition were developed and the growth abilities of this fastidious prokaryote were evaluate...
Grapevine xylem sap enhances biofilm development by Xylella fastidiosa
Xylella fastidiosa is able to form biofilms within xylem vessels of many, economically important crops. Vessel blockage is believed to be a major contributor to disease development caused by this b...
Identification of mechanisms mediating cold therapy of Xylella fastidiosa-infected grapevines
We are attempting to characterize the biochemical factors that mediate the cold curing phenomenon of grapevines infected with Xylella fastidiosa (Xf). We are working towards completing project obje...
ISOLATION AND GROWTH OF STRAINS OF XYLELLA-FASTIDIOSA FROM INFECTED GRAPEVINES ON NUTRIENT AGAR MEDIA
Two grape strains (FC and C) of the causal organism of Pierce’s disease (PD) of grapevine, Xylella fastidiosa, were isolated from infected grape petioles onto PD3 medium, nutrient agar (NA), and NA...
ISOLATION, CULTIVATION, AND PATHOGENICITY OF XYLELLA-FASTIDIOSA, THE CAUSAL BACTERIUM OF PEAR LEAF SCORCH DISEASE IN TAIWAN
Leaf scorch symptoms occurred in 12-20.6% of the pear trees (Pyrus pyrifolia) in the low-altitude areas of central Taiwan in 1990. Symptoms appeared on leaves in early July and stayed until the lea...
