Table 1.

Inhibition of archaeal and bacterial growth by GC7 a

SpeciesGrowth at 100 μM GC7Growth at 1,000 μM GC7
S. acidocaldarius +
S. solfataricus +++
H. halobium +++
H. mediterranei +++
E. coli +++++
  • a +++, normal growth; ++, slight increase in doubling time (1.3); +, doubling time increased by a factor of 2; −, no measurable growth. See text for details on conditions and monitoring of growth.