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UV Damage and Photoreactivation: Timing and Age are Everything ¶
Author(s) -
Grad Gabriella,
Burnett Bethany J.,
Williamson Craig E.
Publication year - 2003
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1562/0031-8655(2003)0780225udapta2.0.co2
Subject(s) - photolyase , biology , rotifer , fish <actinopterygii> , dna damage , zoology , dna repair , microbiology and biotechnology , toxicology , ecology , dna , genetics , fishery
Aquatic organisms, ranging from bacteria to fish, living in clear lakes are presently receiving damaging levels of UV radiation. Photoreactivation is a light‐dependent mechanism by which some organisms deal with DNA damage caused by UV radiation. Yet, photoreactivation is a mechanism that confounds long‐term predictive modeling of UV effects on the survival of these organisms. Here we show that a short‐lived rotifer species, Asplanchna girodi , previously thought to have little to no photoreactivation, does indeed have a significant amount of it. The ability to undergo photoreactivation in A. girodi is dependent on age and becomes apparent only after several days of observation after UV exposure.