Bioluminescence

Bioluminescence is light produced by living organisms through chemical reactions. It occurs in diverse groups, especially marine animals, fungi, and bacteria.

Luciferin: A light-emitting molecule oxidized in many bioluminescent reactions. Its oxidation supplies the excited products that release light.
Firefly luciferase: An enzyme from fireflies widely used as a reporter in biological research. Its light output reveals gene expression, cell activity, and other molecular events.
Firefly: A beetle whose abdominal lantern produces light through a luciferin-based reaction. Its signaling flashes are among the best-known examples of bioluminescence.
Raphaël Dubois: A French physiologist who investigated bioluminescence and named luciferin and luciferase. His experiments with luminous beetles helped establish the chemical framework for biological light.
Light pollution: Excessive or poorly directed artificial light that disrupts natural darkness. Artificial night lighting can obscure natural displays and interfere with organisms’ light-based behavior.
Luciferase: An enzyme that catalyzes a light-producing reaction involving a luciferin. Different luciferases enable organisms to generate light through distinct reaction systems.
ATP assay: A test that measures adenosine triphosphate to estimate biological material or activity. Firefly luciferase produces light in proportion to ATP under controlled conditions.
Anglerfish: A group of deep-sea fishes, some of which use a luminous lure to attract prey. Its light functions as bait in the darkness of the deep sea.
E. Newton Harvey: An American physiologist who studied the chemistry and distribution of bioluminescence. His comparative work clarified how light production varies among organisms.
Animal communication: The transfer of information between animals through signals and responses. Many luminous displays convey information used in courtship, recognition, or warning.

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