Re: Jason's thread below provokes an interesting hypothesis and question.
I don't see why not.
If those tube worms in our ocean can survive the high temperatures no light (except infra red?) and almost zero oxygen, why not the reverse?
It's possibly the most likely way other planets will be teraformed.
I found it interesting that in micro gravity enviroments the plants were choking on the oxygen they produced and needed fans to circulate it away.