This lesson introduces Salmonella as a bacterial genus and explains how scientists classify its many forms. Understanding the names and relationships of Salmonella is important for interpreting laboratory results, research, and public-health reports.
Salmonella is a genus of rod-shaped, or bacillus-shaped, Gram-negative bacteria in the family Enterobacteriaceae. The genus has two recognized species: Salmonella enterica and Salmonella bongori. S. enterica is the type species and includes six recognized subspecies.
All flashcards
What are the basic cellular characteristics of Salmonella?
It is a genus of rod-shaped, Gram-negative bacteria in the family Enterobacteriaceae.
What does it mean that Salmonella is a facultative anaerobe?
It can use oxygen when available and use anaerobic respiration or fermentation when oxygen is scarce.
Which six subspecies are recognized within *Salmonella enterica*?
*Enterica*, *salamae*, *arizonae*, *diarizonae*, *houtenae*, and *indica*.
How did the genus Salmonella get its name?
Joseph Leon Lignières proposed the name in 1900 to honor veterinary surgeon Daniel Elmer Salmon.
What is invasive nontyphoidal Salmonella disease (iNTS)?
A serious form of nontyphoidal Salmonella infection that can include bloodstream infection.
Quiz questions
Which two species are recognized in the genus Salmonella?Answer: *Salmonella enterica* and *Salmonella bongori*.
What is the purpose of RVS broth when testing for Salmonella?Answer: It enriches Salmonella in a sample before detection.
What can Salmonella’s type III secretion system 1 help the bacterium do?Answer: Deliver effectors that promote host-cell uptake through membrane ruffling.
Which description applies to typhoidal Salmonella serotypes?Answer: They are adapted to humans and are transmitted between people.
What distinguishes enteric fever from Salmonella infection mainly restricted to the gut?Answer: Bacteria spread beyond the intestine, potentially reaching the bloodstream and organs.
Based on the Wikipedia article Salmonella, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.