This tutorial describes how bacteria communicate by a process known as quorum sensing, as shown through a series of experiments involving genetically engineered bioluminescent bacteria.

Vibrio harveyi is a marine bacteria that emits light, a property known as bioluminescence, only at high population density. This type of bioluminescence is controlled by a signaling system among bacteria called quorum sensing. The Click & Learn describes the results of three experiments that reveal how the quorum sensing system works.

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Written By

Dennis Liu, Ph.D.

UI/UX Design and Development

Art

  • Blake Porch
  • Davey Thomas, A3MG

Video

  • Chris Vargas
  • Satoshi Amagai, Ph.D.

Scientific advisors

  • Margaret McFall-Ngai, Ph.D.
  • Edward G. Ruby, Ph.D.

Photo Credits

  • Hawaiian monk seal: James D. Watt/Oceanstock/SeaPics.com
  • Barracuda: Wikipedia/Laban712
  • Firefly: Judd Patterson Photography
  • Stubby squid: Dr. Scott Godwin
  • Lizardfish: Keoki Stender, Marinelifephotography.com
  • Foxfire: Wikipedia/Ylem
  • Jellyfish: Dr. Osamu Shimomura, Marine Biological Laboratory
  • Flashlight fish footage: Undersea Productions
  • Squid light organ: Crookes, et al., Science 303 (2004): 235

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Version 2.0
Updated on 02/6/2024