UV damage and photoreactivation: timing and age are everything.

نویسندگان

  • Gabriella Grad
  • Bethany J Burnett
  • Craig E Williamson
چکیده

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.

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عنوان ژورنال:
  • Photochemistry and photobiology

دوره 78 3  شماره 

صفحات  -

تاریخ انتشار 2003