Effects of UV radiation on DNA photodamage and production in bacterioplankton in the coastal Caribbean Sea

This study focuses on the effects of ultraviolet radiation (UVR) on bacterioplankton. The effect of different parts of the sunlight spectrum on the leucine and thymidine incorporation and on the induction of DNA damage in natural bacterial populations in the coastal Caribbean Sea off Curacao were in...

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Bibliographic Details
Published in:Aquatic Microbial Ecology
Main Authors: Visser, P.M, Snelder, E, Kop, A.J, Boelen, P., Buma, A.G.J., van Duyl, F.C
Format: Article in Journal/Newspaper
Language:English
Published: 1999
Subjects:
UV radiation
bacterioplankton
DNA damage
bacterial production
phytoplankton
carbohydrates
ULTRAVIOLET-B RADIATION
PLANKTONIC MARINE-BACTERIA
DISSOLVED ORGANIC-MATTER
SOLAR-RADIATION
ANTARCTIC PHYTOPLANKTON
OZONE DEPLETION
GROWTH
SURFACE
WATERS
DAMAGE
Antarctic
Antarc*
Online Access:https://hdl.handle.net/11370/07d055a5-5fd6-43e4-bb3d-b0e43cec7b24
https://research.rug.nl/en/publications/07d055a5-5fd6-43e4-bb3d-b0e43cec7b24
https://doi.org/10.3354/ame020049
https://pure.rug.nl/ws/files/67132737/a020p049.pdf
Description
Summary:This study focuses on the effects of ultraviolet radiation (UVR) on bacterioplankton. The effect of different parts of the sunlight spectrum on the leucine and thymidine incorporation and on the induction of DNA damage in natural bacterial populations in the coastal Caribbean Sea off Curacao were investigated. DNA photodamage in microorganisms and biodosimeters was quantified by the number of cyclobutane dimers (thymine dimers). Increasing DNA damage during the day was found when incubated in full surface solar radiation. When UVBR was excluded no DNA damage was observed, indicating that thymine dimers were only formed by WE radiation. The amount of thymine dimers in the >0.8 mu m fraction was only one-third of the amount of induced thymine dimers in the

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