Luminous Bacteria

Luminous Bacteria

 

(or photobacteria), bacteria that emit light. A blue-green luminescence with a wave length of 410–650 nanometers is observed in rodlike or coiled bacteria belonging to the genera Photobacterium, Lucibacterium, and Vibrio. The luminescence is dependent on the presence of the enzyme lucifer-ase in the cells of these bacteria and is observed only in the presence of free oxygen. Luminous bacteria are found in the surface layer of seawater. Some species of these bacteria are symbionts of cephalopod mollusks and fish and accumulate in their luminescence organs. Together with other luminescent organisms, luminous bacteria cause phosphorescence of the sea. The term “photobacteria” is sometimes applied improperly to photo-synthesizing bacteria.

REFERENCE

Chumakova, R. I., and I. I. Gitel’zon. Svetiashchiesia bakterii. Moscow, 1975.
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harveyi and the consequences of infection of this pathogen on the shrimp culture industry in the Philippines have resulted in the development of different techniques to control luminous bacteria in shrimp ponds.
Monitoring of the plankton profile later identified the green algae Chlorella to be largely responsible for inhibiting the proliferation of luminous bacteria (Corre et al.
Presence of snapper, seabass, and siganid inhibits growth of luminous bacteria in a simulated shrimp culture system.
and Tilapia hornorum in controlling the growth of luminous bacteria in a simulated shrimp culture environment.
Additional CheckLight products, which are all based on unique luminous bacteria technologies, will also be featured.
In this case, the light organ is filled with luminous bacteria that emit light and provide the squid protection against predators.
More than 30 years ago, investigators first noted quorum sensing in two luminous bacteria, Vibrio fischeri and Vibrio harveyi.
Bacterial luciferase assay: Assays for luminous bacteria in the arm tip light organs, the ejecta from the organs, and the surrounding water followed the reduced flavin assay described in Hastings et al.
The assay for bacterial luciferase in the tip lights was negative, as were the culturing efforts to demonstrate the presence of luminous bacteria in the arm tips and their exudate.
He has been interested in the biology of marine bacteria from the time of his undergraduate days at Oregon State University, and his interests were captured by luminous bacteria and symbiosis during graduate studies at the University of California, Los Angeles.
When the reaction runs, the insect cadaver, filled with the luminous bacteria, casts an eerie, funereal glow.