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Isolation of a 2-picolinic acid-assimilating bacterium and its proposed degradation pathway

Zheng, Chunli, Wang, Qiaorui, Ning, Yanli, Fan, Yurui, Feng, Shanshan, He, Chi, Zhang, Tian C. and Shen, Zhenxing 2017. Isolation of a 2-picolinic acid-assimilating bacterium and its proposed degradation pathway. Bioresource Technology 245 , pp. 681-688. 10.1016/j.biortech.2017.09.031

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Burkholderia sp. ZD1, aerobically utilizes 2-picolinic acid as a source of carbon, nitrogen and energy, was isolated. ZD1 completely degraded 2-picolinic acid when the initial concentrations ranged from 25 to 300 mg/L. Specific growth rate (μ) and specific consumption rate (q) increased continually in the concentration range of 25–100 mg/L, and then declined. Based on the Haldane model and Andrew’s model, μmax and qmax were calculated as 3.9 and 16.5 h−1, respectively. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) was used to determine the main intermediates in the degradation pathway. Moreover, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) was innovatively used to deduce the ring cleavage mechanism of N-heterocycle of 2-picolinic acid. To our knowledge, this is the first report on not only the utilization of 2-picolinic acid by a Burkholderia sp., but also applying FT-ICR-MS and ATR-FTIR for exploring the biodegradation pathway of organic compounds.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Elsevier
ISSN: 0960-8524
Date of First Compliant Deposit: 30 January 2018
Date of Acceptance: 4 September 2017
Last Modified: 01 Jul 2019 02:11

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