I am not an expert on viral and bacterial resistance to UV radiation. Some googling reveals that bacteria can evolve partial resistance to some forms of UV. In th following paper, the bacteria survived roughly a minute of UVB exposure from a 15W source: https://onlinelibrary.wiley.com/doi/full/10.1111/j.1558-5646.2011.01438.x
But I don’t think they can evolve to be totally resistant, i.e. just sit under a UV light at 250nm or 220nm indefinitely. UV is fundamentally harmful to bacteria because their germ line cannot be protected from it, kind of like how humans are fundamentally vulnerable to gamma rays.
The same goes for viruses, except they also cannot repair themselves and they’re even smaller which makes them more vulnerable.
I am not an expert on viral and bacterial resistance to UV radiation. Some googling reveals that bacteria can evolve partial resistance to some forms of UV. In th following paper, the bacteria survived roughly a minute of UVB exposure from a 15W source: https://onlinelibrary.wiley.com/doi/full/10.1111/j.1558-5646.2011.01438.x
But I don’t think they can evolve to be totally resistant, i.e. just sit under a UV light at 250nm or 220nm indefinitely. UV is fundamentally harmful to bacteria because their germ line cannot be protected from it, kind of like how humans are fundamentally vulnerable to gamma rays.
The same goes for viruses, except they also cannot repair themselves and they’re even smaller which makes them more vulnerable.