Abstract
In this study, characterization of industry-borne Comamonas testosteroni strain PT9 isolate was performed by determining degradation ability on phthalic acid (PA). High-performance liquid chromatography analyses showed that strain PT9 completely degraded 102.94 mg/L of PA within 6 h. Viability polymerase chain reaction (vPCR) was performed with propidium monoazide treatment. vPCR showed that the PA has positively stimulated the cell growth during degradation. To consider the fate of PA, the proposed catalytic genes (ophA2, iphA2, tphA2, tphA3, pmdA, and pmdB) for the degradation pathways of PA isomers for C. testosteroni were screened in strain PT9. All genes except iphA2 were detected in strain PT9, and expression levels of related genes were analyzed by Real-Time PCR (qPCR).
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