Salmonella enterica serovar Pullorum is worldwide a poultry pathogen of considerable economic importance, particularly in those countries with a developing poultry industry. In addition to the characteristic high mortality rates among young chicks, one of the features of Salmonella serovar Pullorum infection is that it persists for long periods in convalescent chicks in the absence of clinical ...

Growth of strains of Salmonella enteritidis and Salmonella pullorum on Hektoen agar has been reported to influence the expression of long-chain lipopolysaccharide and motility respectively. In this study we used a panel of strains of S. enteritidis and S. pullorum to investigate these phenomena. Culture on Hektoen agar did not cause rough strains of S. enteritidis to express long-chain lipopoly...

Salmonella enterica serovar Pullorum is a chicken-adapted pathogen, causing pullorum disease. Its strict host adaptation has been suspected to result in gene decay. To validate this hypothesis and identify the decayed genes, we sequenced the complete genome of S. Pullorum RKS5078. We found 263 pseudogenes in this strain and conducted functional analyses of the decayed genes.

BACKGROUND Salmonella enterica serovar Pullorum (S. Pullorum) causes Pullorum disease (PD), a severe systemic disease of poultry and results in considerable economic losses in developing countries. In order to develop a safe and immunogenic vaccine, the immunogenicity and protective efficacy of S06004ΔSPI2, a Salmonella pathogenicity island 2 (SPI2) deleted mutant of S. Pullorum was evaluated i...

Salmonella pullorum (S. pullorum) is the causative agent of disease and results in severe economic losses poultry, can long-term survival by colonizing host organs. steE an effector protein secreted pathogenicity island 2. It not clear vivo for colonization Salmonella. To investigate role on S. Pullorum principal organs chicken, we used ΔsteE strains immunized chickens, respectively. The virule...

Newcastle disease virus (NDV) and Salmonella Pullorum have significant damaging effects on the poultry industry, but no previous vaccine can protect poultry effectively. In this study, a recombinant-attenuated S. Pullorum strain secreting the NDV hemagglutinin-neuraminidase (HN) protein, C79-13ΔcrpΔasd (pYA-HN), was constructed by using the suicide plasmid pREasd-mediated bacteria homologous re...

BACKGROUND Salmonella serovars Enteritidis and Gallinarum are closely related, but their host ranges are very different: the former is host-promiscuous and the latter can infect poultry only. Comparison of their genomic sequences reveals that Gallinarum has undergone much more extensive degradation than Enteritidis. This phenomenon has also been observed in other host restricted Salmonella sero...