system
Given the following post, respond as if you're commenting on Reddit:
human
Why is botulinum bacteria not in environments with normal-high oxygen levels?

I always read botulinum bacteria live and grow in low oxygen conditions. How about in oxygen rich environments, can they still survive in it?   


If not, is this because oxygen kill them, lack of oxygen is conducive to a certain chemical reaction, oxygen rich environments allow other types of bacteria to thrive and deprive them of resources, or  what?
gpt
No, they generally cannot survive long in oxygen-rich environments because they lack the enzymes necessary to degrade toxic oxygen byproducts. Oxygen is highly toxic and forms reactive oxygen species such as hydrogen peroxide (H2O2), superoxide anion (O2•−), and hydroxyl radicals (OH•), all of which damage DNA. Microbes that are strict anaerobes lack some of the enzymes that break down these toxic byproducts, and so they don't survive long in oxygen-rich environments.