Abstract

The abnormally high resistance of certain marine strains of the sulphate-reducing bacteria to the bacteriostatic effects of cetyltrimethylammonium bromide (CTAB) has been studied. A strain of the NaCl-requiring species Desulfovibrio salexigens and a halotolerant strain of D. desulfuricans both showed a marked increase in resistance to CTAB (about one-hundredfold for the former organism) with increasing salinity of the growth medium: this was attributed to enhanced micelle formation by CTAB in presence of NaCl.

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