The cellular fatty acid composition of Deleya halophila, a moderately halophilic bacterium, grown at different temperatures and NaCl concentrations is reported. When the temperature was lowered the amounts of monounsaturated C16:1 and C18:1 fatty acids increased with a corresponding decrease in the amounts of saturated C16:0 and C18:0 fatty acids. Increasing the salt concentration in the medium resulted in an increase of cyclopropane fatty acids, with a concomitant decrease in the monounsaturated fatty acids, suggesting that cyclopropane synthetase is activated or induced by high levels of salt.
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MONTEOLIVA-SANCHEZ et al. (1988) studied this question.
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