Hmm... That's a very interesting article! The one microbe that caught my eye in there was Deinococcus radiodurans, which is "one of the most radioresistant organisims known".
It can take up to 5,000 Gy of radiation, and to put it to scale, "10 Gy can kill a human"
I think it would be pretty cool if GM dedicated some microbes to this project!
(quoted by Wikipedia)