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假单胞菌属菌株KC在反硝化条件下对四氯化碳的转化

Transformation of carbon tetrachloride by Pseudomonas sp. strain KC under denitrification conditions.

作者信息

Criddle C S, DeWitt J T, Grbić-Galić D, McCarty P L

机构信息

Environmental Engineering and Science, Stanford University, California 94305-4020.

出版信息

Appl Environ Microbiol. 1990 Nov;56(11):3240-6. doi: 10.1128/aem.56.11.3240-3246.1990.

Abstract

A denitrifying Pseudomonas sp. (strain KC) capable of transforming carbon tetrachloride (CT) was isolated from groundwater aquifer solids. Major products of the transformation of 14C-labeled CT by Pseudomonas strain KC under denitrification conditions were 14CO2 and an unidentified water-soluble fraction. Little or no chloroform was produced. Addition of dissolved trace metals, notably, ferrous iron and cobalt, to the growth medium appeared to enhance growth of Pseudomonas strain KC while inhibiting transformation of CT. It is hypothesized that transformation of CT by this organism is associated with the mechanism of trace-metal scavenging.

摘要

从地下含水层固体中分离出了一种能够转化四氯化碳(CT)的反硝化假单胞菌(菌株KC)。在反硝化条件下,假单胞菌菌株KC对14C标记的CT进行转化的主要产物是14CO2和一种未鉴定的水溶性组分。几乎没有产生氯仿。向生长培养基中添加溶解的微量金属,特别是亚铁和钴,似乎能促进假单胞菌菌株KC的生长,同时抑制CT的转化。据推测,该生物体对CT的转化与微量金属清除机制有关。

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