A bacterial strain, which was isolated from soil and identified as a Pseudomonas sp., grew on 2-naphthylamine-1-sulfonic acid (tobias acid), 1-naphthalenesulfonic acid and 2-naphthol-1-sulfonic acid as sole carbon sources. Ammonia and sulfonate were released from tobias acid with growth and accumulated in the cultural medium. Salicylic acid was also accumulated temporarily in the medium. The bacterium degraded gentisic acid, but not catechol. The following degradation pathway; tobias acid → 2-naphthol-1-sulfonic acid → l, 2-dihydroxynaphthalene → salicylic acid → gentisic acid is suggested for the degradation of tobias acid by this organism.
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Ohe et al. (1986) studied this question.