Biologija / Biology
 ISSN 1392-0146 ISSN 2029-0578 (online) |
2005 m. Nr. 2 Unstably stratified cultures of luminous cells
Dense and open to air cultures of luxCDABE-gene fused Ralstonia eutropha in a cylindrical vessel exhibit bioconvection, which accounts for fluctuating bioluminescence. The characteristic period of fluctuations is ~10 min, when an unstable oxic–anoxic interface develops in close proximity (~1 mm) to the meniscus. Formation of a particular interface in the deeper layers (~2–3 mm) results in a noise which is close to Brownian.
Keywords: bioconvection, bioluminescence, fluctuations, lux-genes, oscillations |
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