What did Bonnie Bassler discover about bacteria?
She was elected to the National Academy of Sciences (NAS) in 2006. Her inaugural article in PNAS shows that four small strands of RNA regulate quorum sensing and virulence, the ability of a microorganism to cause disease, in Vibrio cholerae, the bacteria that caused cholera epidemics around the world (1).
What did Bassler discover about how the bacteria talk to each other?
Bonnie Bassler discovered that bacteria “talk” to each other, using a chemical language that lets them coordinate defense and mount attacks. The find has stunning implications for medicine, industry — and our understanding of ourselves. This talk was presented at an official TED conference.
How does Vibrio fischeri use quorum sensing?
Abstract. The marine bacterium Vibrio fischeri regulates its bioluminescence through a quorum sensing mechanism: the bacterium releases diffusible small molecules (autoinducers) that accumulate in the environment as the population density increases.
How do the Vibrio fischeri communicate what happens as a result of their communication?
At the chemical level, how do Vibrio fischeri bacteria communicate with one another? It secretes molecules that helps the bacteria know if it has neighbors. Get enough neighbors and enough molecules floating together and bioluminescence occurs.
What special property do Vibrio fischeri exhibit?
What you’re looking at on this slide is just a person from my lab holding a flask of a liquid culture of a bacterium, a harmless beautiful bacterium that comes from the ocean, named Vibrio fischeri. This bacterium has the special property that it makes light, so it makes bioluminescence, like fireflies make light.
What role does bioluminescence play in Hawaiian bobtail squid Vibrio fischeri symbiosis?
During the night, the bobtail squid leaves its hiding spot and forages in the water column. The squid has evolved to live in a symbiotic relationship with the bioluminescent bacteria species Vibrio fischeri, which serves to protect the squid from its predators and prevent it from being seen by its prey.
What substance makes bacteria glow?
Bacterial bioluminescence is created by bacterial luciferase, a protein that cause a chemical reaction to take place with a Flavin MonoNucleotide (FMN) molecule. When this chemical reaction happens light is created.
Which Vibrio species is bioluminescent?
Aliivibrio fischeri
Aliivibrio fischeri (also called Vibrio fischeri) is a Gram-negative, rod-shaped bacterium found globally in marine environments. This species has bioluminescent properties, and is found predominantly in symbiosis with various marine animals, such as the Hawaiian bobtail squid.
How do bioluminescent bacteria produce light?
Bioluminescence occurs through a chemical reaction that produces light energy within an organism’s body. For a reaction to occur, a species must contain luciferin, a molecule that, when it reacts with oxygen, produces light.
Who is Jennifer Bassler?
Bassler directed the Molecular Biology Graduate Program from 2002-2008 and she currently chairs Princeton University’s Council on Science and Technology which has revamped the science curriculum for humanists.
Who is Dr Laura Bassler?
Bassler was the President of the American Society for Microbiology in 2010-2011. She is currently the Chair of the American Academy of Microbiology Board of Governors. She is a member of the National Science Board and was nominated to that position by President Barack Obama.
What awards has Mary Bassler won?
She was given the 2003 Theobald Smith Society Waksman Award and she is the 2006 recipient of the American Society for Microbiology’s Eli Lilly Investigator Award for fundamental contributions to microbiological research. In 2008, Bassler was given Princeton University’s President’s Award for Distinguished Teaching.
Which autoinducers control Vibrio cholerae biofilm formation and dispersal?
Bridges AA, Bassler BL. The intragenus and interspecies quorum-sensing autoinducers exert distinct control over Vibrio cholerae biofilm formation and dispersal. PLoS Biol. 2019 ;17 (11):e3000429.