Paper Basics
The bacterial species used in the study
What is Escherichia coli?
The outcome of the released colicin toxins on a bacterial
What is the cell lyses (dies)?
The two bacterial strains that are competing in Figure 6
What is the E2 colicin-producing strain and E8 colicin-producing strain?
The form of attack that produces colicins at a basal level in some of the producers
What is a pre-emptive attack?
The type of toxins studied in this paper that allow bacteria to kill competitors
What is colicins?
The protein that protects colicin-producing bacteria from their own toxin
What is an immunity protein?
The two ecological scenarios tested in Figure 6
What is exclusion and invasion?
The difference between a responsive attack and a coordinated attack
What is a coordinated attack is both activated by genotoxic agents from competitors as well as autoinducers while responsive is just activated by competitors?
The cellular stress response that regulates many colicin genes in this paper
What is SOS response (regulated by LexA)?
The term for toxin production that occurs even when competitors are not present
What is pre-emptive attack
The strain that starts as the majority population in the exclusion scenario
What is the E2 strain?
The enzyme released most commonly that changes a pre-emptive attack into an amplified pre-emptive attack
What is DNase?
The type of damage that activates the SOS response and increases toxin production
What is DNA damage?
The reason weaker cells are more likely to produce colicin
What is they have lower reproductive value and are less likely to divide?
The error bars in Figure 6B represent
What is standard deviation across biological replicates?
The level of reproductive fitness that LexA regulation identifies to release colicins as a pre-emptive attack
What is low reproductive fitness?
The transcriptional repressor that normally prevents colicin expression
What is LexA?
The ecological benefit bacteriocins like colicins provide
What is they help bacteria compete for space and resources by killing competing strains.
The statistical tests that were used to determine significance in Figure 6B
What is ANOVA followed by Tukey’s HSD test?
The four strategies described in the paper
What is pre-emptive attack, amplified pre-emptive attack, responsive attack, coordinated attack?