由鞘氨醇单胞菌 RW1 菌株和伯克霍尔德氏菌 JWS 菌株组成的联合体对 4-氯二苯并呋喃的矿化作用。
Mineralization of 4-Chlorodibenzofuran by a Consortium Consisting of Sphingomonas sp. Strain RW1 and Burkholderia sp. Strain JWS.
出版信息
Appl Environ Microbiol. 1997 Sep;63(9):3458-62. doi: 10.1128/aem.63.9.3458-3462.1997.
Abstract
The dibenzofuran-degrading bacterium Sphingomonas sp. strain RW1 (R.-M. Wittich, H. Wilkes, V. Sinnwell, W. Francke, and P. Fortnagel, Appl. Environ. Microbiol. 58:1005-1010, 1992) attacks 4-chlorodibenzofuran on the unsubstituted aromatic ring via distal dioxygenation adjacent to the ether bridge to produce 3(prm1)-chloro-2,2(prm1),3-trihydroxybiphenyl, which was identified by nuclear magnetic resonance spectroscopy and mass spectrometry. The compound is subsequently meta cleaved, and the respective intermediate is hydrolyzed to form a C-5 moiety, which is further degraded to Krebs cycle intermediates and to 3-chlorosalicylate. This dead-end product is released into the culture medium. A coculture of strain RW1 and the 3,5-dichlorosalicylate-degrading strain Burkholderia sp. strain JWS (A. Schindowski, R.-M. Wittich, and P. Fortnagel, FEMS Microbiol. Lett. 84:63-70, 1991) is able to completely degrade 4-chlorodibenzofuran with concomitant release of Cl(sup-) and formation of biomass.
摘要
二苯并呋喃降解菌 Sphingomonas sp. 株 RW1（R.-M. Wittich、H. Wilkes、V. Sinnwell、W. Francke 和 P. Fortnagel，Appl. Environ. Microbiol. 58:1005-1010, 1992）通过毗邻醚桥的远端双加氧作用攻击未取代的芳环上的 4-氯二苯并呋喃，生成 3(prm1)-氯-2,2(prm1),3-三羟基联苯，这通过核磁共振波谱和质谱进行了鉴定。该化合物随后进行间位裂解，相应的中间产物被水解形成 C-5 部分，该部分进一步降解为三羧酸循环中间产物和 3-氯水杨酸。这个死端产物被释放到培养基中。RW1 株和 3,5-二氯水杨酸降解菌 Burkholderia sp. 株 JWS 的共培养物（A. Schindowski、R.-M. Wittich 和 P. Fortnagel，FEMS Microbiol. Lett. 84:63-70, 1991）能够完全降解 4-氯二苯并呋喃，同时释放 Cl(sup-) 和形成生物量。
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