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BIOLUMINESCENCE IN MICROORGANISMS PPT.pptx

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Bioluminescence is chemical processes .certain organisms are able to synthesize and emit light.
Bioluminescence in microorganisms
Bioluminescent Bacteria
Bioluminescent fungi
Bioluminescent algae

Bioluminescence is chemical processes .certain organisms are able to synthesize and emit light.
Bioluminescence in microorganisms
Bioluminescent Bacteria
Bioluminescent fungi
Bioluminescent algae

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BIOLUMINESCENCE IN MICROORGANISMS PPT.pptx

  1. 1. Presented by M. Monisha (BP211522), II M.Sc Applied Microbiology, Department of Microbiology, Sacred Heart College (Autonomous), Tirupattur, Tamil Nadu, India BIOLUMINESCENCE IN MICROORGANISMS
  2. 2. INTRODUCTION  Bioluminescence is chemical processes that certain organisms are able to synthesize and emit light .  The etymology of bioluminescence comes from two Greek words, bios –living and lumen – light.  Bioluminescence occurs in a wide range of organisms, including vertebrates, invertebrates, microorganisms, and some fungi.  Luminescent bacteria that produce light have a symbiotic relationship within other organisms. Bioluminescence is a type of chemiluminescence due to the production of light by a chemical reaction .  There are two molecules that are produced by the organisms, luciferin (a pigment)  luciferase (an enzyme)  The chemical reaction that produces luminescence can occur within or outside the cell.
  3. 3. Bioluminescent Bacteria  Luminescent bacteria can be found in different habitats and are widely distributed. They are more commonly found in marine environments than in non-marine environments . There are three major genera for luminous bacteria that have been well studied: Vibrio, Photobacterium, and Xenorhabdus . Genus Xenorhabdus are terrestrial bacteria.  Both genus Vibrio and Photobacterium are marine microorganisms that have a symbiotic relationship with certain marine species.
  4. 4. Importance of Bioluminescent Bacteria  Many bioluminescent bacteria live within specialized tissues of certain marine animals such as squid and fish. A specific symbiotic relationship is between the luminescent bacteria, Vibrio fischeri and squid.  The benefits of marine species co-existing with the luminance bacteria are attraction of prey, diversion of predators, and communication; however the advantages for bacteria are still currently not well known.
  5. 5. Mechanism of Bioluminescent Bacteria
  6. 6. Uses of Bioluminescence To attract or find prey. For defence. To attract mates. As a means of communication. As a response to change in the environment.
  7. 7. Application of Bioluminescence  It is used extensively as a work of art employed by artists to create lines or make exhibits in Petri dishes.  For monitoring the environment. To assess toxicity. It is used in the field of biology and medicine.  Used to conduct remedial investigations.  As a means of field method.  For light production.  Used as a tool in marine ecosystems
  8. 8. BIOLUMINESCENCE IN MUSHROOM AND OTHER FUNGI  There are about 70 species of fungi that are known to use bioluminescence. Most are found in tropical jungles, but a few are found in temperate forests, like the species called foxfire.  A foxfire reffered to the green glowing light emited by some basidiomycetes and other fungi.  It is used as a light source for the early wooden submarine.  They use the luciferin iludin for bioluminescence which is toxic to ingest.
  9. 9. DINOFLAGELLATES  Also known as the fire algae, they are a kind of unicellular algae that are found inhabiting both freshwater and marine ecosystems. These entities are capable of bioluminescence as they produce a chemical compound which has the potential to generate light when they react.  They use the process of bioluminescence as a defensive mechanism against the predators. On lighting up, these entities a glowing blue colour.

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