Life is hard in hot volcanic pools laden with salt, acid, sulfur and toxic metals, but a red alga called Galdieria sulphuraria thrives in such environments with a little genetic help from some microbial buddies. The alga borrowed at least 5 percent of its genes from bacteria and archaea that live in extreme conditions, Gerald Schönknecht of Oklahoma State University in Stillwater and his colleagues report in the March 8 Science.
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