Differential tolerance of<i>Sulfolobus</i>strains to transition metals

Abstract

Sulfolobus acidocaldarius strains 98–3 and B12, and S. solfataricus ATCC 35091 were evaluated for tolerance to Cd, Co, Cu, Ni, Zn and Mg. The tolerance of strains 98–3 and ATCC 35091 to these metals was Mg > Zn > Cd > Cu ≥ Co > Ni. For B12, however, the order of tolerance was Mg > Cd > Zn = Co > Ni > Cu. Tolerance to these metals is also presented as a potentially useful taxonomic indicator.