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Research has been conducted on the Gordonia nitida LE31 cells. Results indicate that grown on 3-methylpyridine these cells degrade 3-ethylpyridine and vise versa and that this degradation occurs via a pathway involving C-2-C-3 ring cleavage.

Research has been conducted on the pyridine-2,6-dithiocarboxylic acid, a metal chelator produced by Pseudomonas spp. The antimicrobial effects of this acid have been investigated, and the mechanism of its activity has been described.

Growth of Micrococcus luteus on media containing pyridine as carbon, nitrogen and energy source results in the production of yellow fluorescent pigments. An investigation was conducted to determine the identity of these pigments. Chromatographic analyses identified three major fluorophores as riboflavin, lumiflavin and lumichrome. These pigments are unlikely to be products of pyridine polymerization. Furthermore, radiotracer experiments confirmed that riboflavin did not arise directly from pyridine.