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Benzeneboronic acid selectively inhibits sporulation of Bacillis subtilis.

ABSTRACT

m-Aminobenzeneboronic acid at levels of 0.2 mM in nutrient broth medium selectively inhibited sporulation without appreciably altering vegetative growth. Significant inhibitory effects were seen even when it was added as late as 6 h after the end of logarithmic growth. The pH changes associated with growth and sporulation of Bacillus subtilis in nutrient broth were not significantly altered by the inhibitor. When it was present in cultures of actively growing cells, its inhibitory effect could not be reversed by simple dilution. The compound caused extensive clumping, of cells, which appeared not to be related to the ability of boronates to esterify to diols.

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