Reticulate Evolution Among the Group I Salmonellae: An Ongoing Role for Horizontal Gene Transfer

摘要: Salmonella enterica is responsible for 1.4 million cases of foodborne salmonellosis in the United States annually making it number one causative agent bacterial illnesses (CDC, 2007). Infection can occur after eating undercooked meat, poultry and eggs that have been contaminated with In recent years several outbreaks occurred were associated contamination produce, most being a S. Saintpaul outbreak tomatoes, jalapeno serrano peppers sickened over 1400 individuals 2008). The movement serovars into previously naive niches (i.e., producegrowing environs) suggests pathogen readily adapting to new environments. An understanding reticulate evolutionary mechanisms underpin acquisition composition requisite genetic phenotypic features essential more accurate risk assessment this (Hohmann, 2001).