洋葱伯克霍尔德菌对污染土壤中2,4,5-三氯苯氧乙酸的解毒作用
Detoxification of 2,4,5-trichlorophenoxyacetic acid from contaminated soil by Pseudomonas cepacia.
作者信息
Kilbane J J, Chatterjee D K, Chakrabarty A M
出版信息
Appl Environ Microbiol. 1983 May;45(5):1697-700. doi: 10.1128/aem.45.5.1697-1700.1983.
Abstract
The strain of Pseudomonas cepacia, AC1100, capable of utilizing 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) as a sole source of carbon and energy can degrade 2,4,5-T in contaminated soil, removing more than 99% of 2,4,5-T present at 1 mg/g of soil within 1 week. Repeated application of AC1100 even allowed more than 90% removal of 2,4,5-T within 6 weeks from heavily contaminated soil containing as much as 20,000 ppm 2,4,5,-T (20 mg/g of soil). Microbial removal of 2,4,5-T allowed the soil to support growth of plants sensitive to low concentrations of 2,4,5-T. After 2,4,5-T removal, the titer of AC1100 in the soil rapidly fell to undetectable levels within a few weeks.
摘要
洋葱伯克霍尔德菌AC1100菌株能够将2,4,5-三氯苯氧乙酸（2,4,5-T）作为唯一碳源和能源加以利用，它可以在受污染土壤中降解2,4,5-T，在1周内去除土壤中含量为1毫克/克的2,4,5-T的99%以上。重复施用AC1100甚至能在6周内从含有高达20,000 ppm 2,4,5-T（20毫克/克土壤）的重度污染土壤中去除90%以上的2,4,5-T。微生物对2,4,5-T的去除使土壤能够支持对低浓度2,4,5-T敏感的植物生长。在2,4,5-T被去除后，土壤中AC1100的滴度在几周内迅速降至检测不到的水平。
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