Artificial UV-B induced changes in pigmentation of marine diatom Coscinodiscus gigas.
In vitro studies in marine diatom Coscinodiscus gigas revealed that artificial UV-B radiation (313 nm) at a dose level of 0.4W m(-2) for a continuous period of 3 hours in a UV treatment chamber caused disbursement of chromatophores from their normal loci and resulted in clumping / aggregation of chromatophores exhibiting a phenomenon called UV-B induced syntrophism. It is also understood that such clumping could cause only insignificant reduction in photosynthetic oxygen release.
Yogamoorthi
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Centre for Futures Studies, Pondicherry University, Pondicherry 605 014, India. yogapond@yahoo.com
D002856:Chromatophores / Q000166:cytology / Q000187:drug effects*; D017377:Diatoms / Q000378:metabolism / Q000528:radiation effects*; D010858:Pigmentation / Q000528:radiation effects*; D014466:Ultraviolet Rays