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A rhamnose-rich O-antigen of MP20 is required for symbiosis with .
J Bacteriol
January 2025
Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA.
a β-proteobacterium, forms a nitrogen-fixing symbiosis with many species of the large legume genus as well as with common bean ( L.). are considered to have evolved nodulation independently from the well-studied α-proteobacteria symbionts of legumes.
View Article and Find Full Text PDFBacterial enteritis caused by Salmonella Kedougou after returning from Thailand: A case report.
J Infect Chemother
January 2025
Department of Infectious Diseases, Graduate School of Medical Sciences, Nagoya City University, Aichi, Japan; Department of Clinical Infectious Diseases, Graduate School of Medical Sciences, Nagoya City University, Aichi, Japan; Department of Infectious Diseases, Nagoya City University East Medical Center, Aichi, Japan. Electronic address:
Non-typhoid Salmonella (NTS) includes many serotypes that differ in host, geographic distribution, and virulence. We report the case of a 64-year-old man who developed enteritis caused by Salmonella Kedougou without bacteremia after returning from Thailand. The patient stayed in Chiang Mai, Thailand, for 10 days to play golf and was hospitalized with fever, chills, watery diarrhea, and vomiting on the day the patient returned to Japan.
View Article and Find Full Text PDFbiofilm formation only partially predicts beneficial protection against rhizosphere pathogens.
bioRxiv
December 2024
Department of Microbiology and Immunology, The University of British Columbia, Vancouver, Canada.
Plant roots form associations with both beneficial and pathogenic soil microorganisms. While members of the rhizosphere microbiome can protect against pathogens, the mechanisms are poorly understood. We hypothesized that the ability to form a robust biofilm on the root surface is necessary for the exclusion of pathogens; however, it is not known if the same biofilm formation components required are necessary WCS365 is a beneficial strain that is phylogenetically closely related to an opportunistic pathogen N2C3 and confers robust protection against N2C3 in the rhizosphere.
View Article and Find Full Text PDFCharacterization of serotype 6 strains from geographically diverse low- and middle-income countries.
mBio
January 2025
Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Article Synopsis
- Serotype 6 is a common cause of moderate to severe diarrhea but remains understudied, prompting research into its genomic and phenotypic characteristics compared to other serotypes.
- Genomic analyses revealed notable similarities among 6 strains across different regions and timeframes, along with the identification of a potential novel virulence factor and unique patterns of antibiotic susceptibility specific to geographic locations.
- Findings suggest that serotype 6 has distinct genetic and phenotypic traits that could enhance vaccine development and diagnostic tools, which is crucial given the rising incidence of shigellosis, particularly in low- and middle-income countries.
Trade-offs between receptor modification and fitness drive host-bacteriophage co-evolution leading to phage extinction or co-existence.
ISME J
January 2024
Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, British Columbia V6T 1Z4, Canada.
Parasite-host co-evolution results in population extinction or co-existence, yet the factors driving these distinct outcomes remain elusive. In this study, Salmonella strains were individually co-evolved with the lytic phage SF1 for 30 days, resulting in phage extinction or co-existence. We conducted a systematic investigation into the phenotypic and genetic dynamics of evolved host cells and phages to elucidate the evolutionary mechanisms.
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