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Article

Biodegradation of Picolinic Acid by Rhodococcus sp. PA18

1
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
2
College of Life Sciences, Zaozhuang University, Zaozhuang 277100, China
3
College of Environmental and Resource Sciences, Nanjing Agricultural University, Nanjing 210095, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2019, 9(5), 1006; https://doi.org/10.3390/app9051006
Received: 7 February 2019 / Revised: 4 March 2019 / Accepted: 6 March 2019 / Published: 11 March 2019
(This article belongs to the Special Issue Environmental Fate of Emerging Organic Micro-Contaminants)
Picolinic acid (PA), a C2-carboxylated pyridine derivative, is a significant intermediate used in industrial production. PA is considered hazardous for the environment and human health. In this study, a Gram-positive bacterium, Rhodococcus sp. PA18, which aerobically utilizes PA as a source of carbon and energy, was isolated. The strain completely degraded 100 mg/L PA within 24 h after induction and formed 6-hydroxypicolinic acid (6HPA), a major PA metabolite, which was identified using ultraviolet-visible spectroscopy, high performance liquid chromatography, and liquid chromatography/time of flight-mass spectrometry analyses. The cell-free extracts converted the PA into 6HPA when phenazine methosulfate was used as an electron acceptor. To our knowledge, this is the first report showing that PA can be metabolized by Rhodococcus. In conclusion, Rhodococcus sp. PA18 may be potentially used for the bioremediation of environments polluted with PA. View Full-Text
Keywords: picolinic acid; biodegradation; Rhodococcus; 6-hydroxypicolinic acid picolinic acid; biodegradation; Rhodococcus; 6-hydroxypicolinic acid
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MDPI and ACS Style

Zhang, Y.; Ji, J.; Xu, S.; Wang, H.; Shen, B.; He, J.; Qiu, J.; Chen, Q. Biodegradation of Picolinic Acid by Rhodococcus sp. PA18. Appl. Sci. 2019, 9, 1006. https://doi.org/10.3390/app9051006

AMA Style

Zhang Y, Ji J, Xu S, Wang H, Shen B, He J, Qiu J, Chen Q. Biodegradation of Picolinic Acid by Rhodococcus sp. PA18. Applied Sciences. 2019; 9(5):1006. https://doi.org/10.3390/app9051006

Chicago/Turabian Style

Zhang, Yanting, Junbin Ji, Siqiong Xu, Hongmei Wang, Biao Shen, Jian He, Jiguo Qiu, and Qing Chen. 2019. "Biodegradation of Picolinic Acid by Rhodococcus sp. PA18" Applied Sciences 9, no. 5: 1006. https://doi.org/10.3390/app9051006

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