A Maverick-like cluster in the genome of a pathogenic, moderately virulent strain of , ESV200, a transient biofilm producer.

Introduction: causes gallibacteriosis in birds. These bacteria produce biofilms and secrete several fimbrial appendages as tools to cause disease in animals. strains contain up to three types of fimbriae.

Gallibacterium elongation factor-Tu possesses amyloid-like protein characteristics, participates in cell adhesion, and is present in biofilms.

Gallibacterium, which is a bacterial pathogen in chickens, can form biofilms. Amyloid proteins present in biofilms bind Congo red dye. The aim of this study was to characterize the cell-surface amyloid-like protein expressed in biofilms formed by Gallibacterium strains and determine the relationship between this protein and curli, which is an amyloid protein that is commonly expressed by members of the Enterobacteriaceae family.

The Genome Sequence of Strain CL Has a Large Repertoire of Insertion Sequence Elements.

The draft genome sequence of strain CL serovar C is reported here. The genome comprises 154 contigs corresponding to 2.4 Mb with 41% G+C content and many insertion sequence (IS) elements, a characteristic not previously reported in .

Isolation of Actinobacillus pleuropneumoniae from layer hens showing clinical signs of infectious coryza.

Actinobacillus pleuropneumoniae is the causal agent of porcine pleuropneumonia, which is a highly contagious respiratory disease that affects swine nearly exclusively. An isolate with characteristics of some Pasteurellaceae family members (Gram-negative bacterium, pleomorphic, and NAD-dependent) was isolated from layer hens showing clinical signs of infectious coryza. This bacterium presented hemolysis on rabbit red blood cell agar plates, and PCR amplification and sequencing of its 16S rDNA gene indicated 99% identity with A.

Secreted proteins of Avibacterium paragallinarum are lethal for chicken embryo.

Avibacterium paragallinarum causes infectious coryza in chickens. This bacterium secretes proteins of 110 kDa (a putative RTX protein) and 120 kDa. Expression of these proteins increases by the addition of CaCl(2), MgSO(4), MnSO(4), or ferric ammonium citrate and diminishes with CuSO(4) or ZnCl(2).