Tanya Soule, Qunjie Gao, Valerie Stout and Ferran Garcia-Pichel The Global Response of Nostoc punctiforme ATCC 29133 to UVA Stress, Assessed in a Temporal DNA Microarray Study Photochemistry and Photobiology 89
Cyanobacteria respond to ultraviolet radiation using several strategies. These can include an increase in the production of antioxidant and DNA damage repair enzymes, UV-absorbing pigments, a decrease in the production of photosynthesis and light-harvesting complexes, as well as physical motility away from the UV source. The sensing of UV in cyanobacteria is not well understood and could involve an unidentified photoreceptor or occur as a secondary response to other effects of UV, such as oxidative stress.
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