Diel and depth profiles of DNA photodamage in bacterioplankton exposed to ambient solar ultraviolet radiation

Diel and depth profiles of DNA photodamage in bacterioplankton exposed to ambient solar ultraviolet radiation

Bacteria play a central role in the cycling of nutrients and energy flow to higher trophic levels, yet the effects of ultraviolet-B (UV-B) radiation upon bacterioplankton have been largely overlooked. Using a highly specific radioimmunoassay, measurements of solar-induced DNA photodamage (cyclobutan...

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Veröffentlicht in:Marine ecology. Progress series (Halstenbek) 1996-06, Vol.137 (1/3), p.283-291
Hauptverfasser: Jeffrey, Wade H., Pledger, Ralph J., Aas, Peter, Hager, Silvia, Coffin, Richard B., Von Haven, Robin, Mitchell, David L.
Format: Artikel
Sprache:eng
Schlagworte:
Bacteria
Bacterioplankton
Cephalopelvic disproportion
DNA
DNA damage
DNA repair
Flood damage
Marine
Radiation damage
Sea water
Surface water
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Zusammenfassung:Bacteria play a central role in the cycling of nutrients and energy flow to higher trophic levels, yet the effects of ultraviolet-B (UV-B) radiation upon bacterioplankton have been largely overlooked. Using a highly specific radioimmunoassay, measurements of solar-induced DNA photodamage (cyclobutane pyrimidine dimers) were taken in planktonic samples collected from the northern Gulf of Mexico. Diel patterns of dimer accumulation and repair were observed in both the bacterioplankton size fraction (0.8 μm
ISSN:0171-8630
1616-1599
DOI:10.3354/meps137283