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Acquisition and Evolution of Plant Pathogenesis-Associated Gene Clusters and Candidate Determinants of Tissue-Specificity in Xanthomonas

Background: Xanthomonas is a large genus of plant-associated and plant-pathogenic bacteria. Collectively, members cause diseases on over 392 plant species. Individually, they exhibit marked host- a...

Characterization of a Diffusible Signaling Factor from Xylella fastidiosa

Cell-cell signaling in Xylella fastidiosa has been implicated in the coordination of traits enabling colonization in plant hosts as well as insect vectors. This cell density-dependent signaling has...

Characterization of N2O-producing Xanthomonas-like isolates from biofilters as Stenotrophomonas nitritireducens sp nov., Luteimonas mephitis gen. nov., sp nov and Pseudoxanthomonas broegbernensis gen. nov., sp nov.

A group of yellow-pigmented isolates from ammonia-supplied biofilters showed an unusual denitrification reaction. All strains reduced nitrite but not nitrate without production of nitrogen (N-2). T...

Decoding the genetic and functional diversity of the DSF quorum-sensing system in Stenotrophomonas maltophilia

Stenotrophomonas maltophilia uses the Diffusible Signal Factor (DSF) quorum sensing (QS) system to mediate intra- and inter-specific signaling and regulate virulence-related processes. The componen...

Diffusible signal factor-dependent quorum sensing in pathogenic bacteria and its exploitation for disease control

Cell-to-cell signals of the diffusible signal factor (DSF) family are cis-2-unsaturated fatty acids of differing chain length and branching pattern. DSF signalling has been described in diverse bac...

Diffusible signal factor signaling regulates multiple functions in the opportunistic pathogen Stenotrophomonas maltophilia

Stenotrophomonas maltophilia is a Gram-negative bacterium commonly isolated from nosocomial infections. Analysis of the genome of the clinical S. maltophilia isolate K279a indicates that it encodes...

Identification and characterization of endophytic bacteria isolated from in vitro cultures of peach and pear rootstocks

Endophytes are microorganisms which live symbiotically with almost all varieties of plant and in turn helping the plant in a number of ways. Instead of satisfactory surface sterilization approaches...

Identification of bacteria on the surface of clinically infected and non-infected prosthetic hip joints removed during revision arthroplasties by 16S rRNA gene sequencing and by microbiological culture

It has been postulated that bacteria attached to the surface of prosthetic hip joints can cause localised inflammation, resulting in failure of the replacement joint. However, diagnosis of infectio...

Phylogenomics and Molecular Signatures for Species from the Plant Pathogen-Containing Order Xanthomonadales

The species from the order Xanthomonadales, which harbors many important plant pathogens and some human pathogens, are currently distinguished primarily on the basis of their branching in the 16S r...

Quorum sensing and virulence regulation in Xanthomonas campestris

It is now clear that cell-cell communication, often referred to as quorum sensing (QS), is the norm in the prokaryotic kingdom and this community-wide genetic regulatory mechanism has been adopted ...

Rice bacterial blight pathogen Xanthomonas oryzae pv. oryzae produces multiple DSF-family signals in regulation of virulence factor production

Xanthomonas oryzae pv. oryzae (Xoo) is the causal agent of rice bacterial blight disease. Xoo produces a range of virulence factors, including EPS, extracellular enzyme, iron-chelating siderophores...

Silanimonas lenta gen. nov., sp nov., a slightly thermophilic and alkaliphilic gammaproteobacterium isolated from a hot spring

A moderately thermophilic aerobic bacterium, strain 25-4(T), was isolated from a hot spring at Baekdoo Mountain in Korea. The cells were Gram-negative, motile rods each having a polar flagellum. An...