Cyanophage PP (isolated from Plectonema boryanum and Phormidium foveolarum and named after the respective first letters of its 2 hosts) is a short-tailed, icosahedral-shaped, and double-stranded DNA virus and can be frequently detected with a high abundance and activity in many eutrophic lakes in Wuhan City, PR China. To understand how the virus survives solar UV-B damage, we examined the decay of cyanophage PP induced by solar UV-B radiation and the photoreactivation repair by host cyanobacteria, on 1 d in each of the 4 different seasons throu...
