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首页> 外文期刊>Current Microbiology: An International Journal >Isolation, characterization of a strain capable of degrading imazethapyr and its use in degradation of the herbicide in soil
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Isolation, characterization of a strain capable of degrading imazethapyr and its use in degradation of the herbicide in soil

机译：能够降解咪唑乙烟的菌株的分离，鉴定及其在土壤中除草剂降解中的应用

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摘要

One strain of bacterium IM-4, capable of degrading imazethapyr (IMZT), was isolated from the IMZT-contaminated soil. The isolate was identified as Pseudomonas sp. according to its physiological characteristics, biochemical tests, and 16S rRNA gene phylogenetic analysis. This strain could utilize IMZT as the sole carbon and energy source. About 73.4% of the 50 mg l(-1) initially added IMZT was degraded after 7 days of inoculation with strain IM-4. This strain also showed the capability to degrade other imidazolinone herbicides such as imazapyr, imazapic, and imazamox. The inoculation strain IM-4 to soil treated with IMZT resulted in a higher degradation rate than in noninoculated soil regardless if the soil was sterilized or nonsterilized. Inoculation of strain IM-4 could also mitigate the phytotoxic effects of IMZT on the growth of maize.
机译：从被IMZT污染的土壤中分离出一种能降解咪唑乙烟（IMZT）的IM-4细菌。该分离物被鉴定为假单胞菌。根据其生理特征，生化试验以及16S rRNA基因系统发育分析。该菌株可以利用IMZT作为唯一的碳和能源。接种IM-4菌株7天后，最初添加的IMZT 50 mg l（-1）中约73.4％降解。该菌株还显示出降解其他咪唑啉酮除草剂（如吡虫啉，咪唑吡嗪和咪唑莫克斯）的能力。与未接种土壤相比，用IMZT处理过的土壤接种IM-4菌株的降解率更高。接种IM-4菌株也可以减轻IMZT对玉米生长的植物毒性作用。

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