Microbiology 3302 Spring 2013 – Getting Friendly with Bacteria

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    Hi, My name is Vibrio fischeri. i like to grow in a anaerobic environment and I am a luminescent bacteria which means I can release free energy in the form of blue-green light at 490nm.
    I belong to a family called Vibrionaceae, which are motile, Gram-negative rods that are natural inhabitants of seawater but can be found in fresh water. I am a species of bioluminescent bacterium, is frequently found in symbiotic relationship with marine animal like bobtail squid. I am very proud of my species because you can see me in a deep ocean where the sunlight can not reach. I will look like a little star lining up in a dark sky. I don’t feel lonely at all because all my friends are like little stars around me too. I am a Gram-negative bacteria, composed of a cell wall that consists of an outer membrane containing lipopolysaccharides, a periplasmic space with a peptidoglycan layer, and inner, cytoplasmic membrane. What makes me so special? It’s my genes known as the Lux operon. I need friends in my life, and we helped each other to survive. Like the symbiotic relationship between me and my friend called Euprymna scolopes, a small Hawaiian squid. I am helpful to the squid, a nocyunal forager, by erasing the shadow that would normally be seen as the moon’s rays strike the squid, protecting the squid from its predators. My friend, in turn, provides me with shelter and a stable source of nutrients.
    Among my species that are capable of causing human disease. Vibrio cholera is my family member. I can cause foodborne disease due to consumption of contaminated seafood, exposure of wounds to contaminated seawater, or injury caused by shark or alligator bites.
    If you see the Euprymna scolopes, you should think of me.

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    Hoi Ho, Thong Huy Do, Tony Tran Ho, Derek Lee. “Vibrio infections.” 2007 January. Emedicine Specialties. http://www.emedicine.com/med/topic2375.htm
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    Ruby, E.G., Urbanowski, M., Campbell, J., Dunn, A., Faini, M., Gunsalus, R., Lostroh, P., Lupp, C., McCann, J., Millikan, D., chaefer, A., Stabb, E., Stevens, A., Visick, K., Whistler, C., and Greenberg, E.P. “Complete genome sequence of Vibrio fischeri: A symbiotic bacterium with pathogenic congeners.” Proc. Natl. Acad. Sci. USA. In press (2005), published online 9 February 2005. http://www.pnas.org/cgi/content/abstract/102/8/3004
    Small, AL and MJ McFall-Ngai (1999). ” A halide peroxidase in tissues that interact with bacteria in the host squid Euprymna scolopes.” J Cellul Biochem 72:445-457. http://www.kewalo.hawaii.edu/labs/mcfall-ngai/



    Hey Vibrio fischeri, I’m Pasteurella multocida. We’re both Gammaproteobacterias, I think we could be good friends.



    Since we are Gammaproteobacteria let’s be friends.

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