Biodegradation of Picolinic Acid by Rhodococcus sp. PA18

Biodegradation of Picolinic Acid by Rhodococcus sp. PA18
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红球菌对吡啶甲酸的生物降解。

DOI:
10.3390/app9051006
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发表时间:
2019-03
影响因子:
2.7
通讯作者:
Chen Qing
Chen Qing
中科院分区:
综合性期刊4区
文献类型:
--
作者:
Zhang Yanting;Ji Junbin;Xu Siqiong;Wang Hongmei;Shen Biao;He Jian;Qiu Jiguo;Chen Qing

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吡啶甲酸(PA)是一种C2-羧基吡啶衍生物,是重要的工业生产中间体。PA被认为对环境和人类健康有害。在这项研究中,革兰氏阳性细菌,红球菌属PA 18,它的好氧利用PA作为碳源和能源,被分离出来。该菌株完全降解100 mg/L PA诱导后24 h内形成6-羟基吡啶甲酸(6 HPA),PA的主要代谢产物,这是确定使用紫外可见光谱,高效液相色谱,液相色谱/飞行时间质谱分析。当吩嗪硫酸甲酯用作电子受体时,无细胞提取物将PA转化为6 HPA。据我们所知,这是首次报道PA可以被红球菌代谢。综上所述,红球菌PA 18可用于PA污染环境的生物修复。
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.
DOI: 10.1128/aem.01150-18
发表时间: 2018-10-01
影响因子: 4.4
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