Microbial degradation of fomesafen and detoxification of fomesafen-contaminated soil by the newly isolated strain Bacillus sp. FE-1 via a proposed biochemical degradation pathway.

Fomesafen is a long residual herbicide and poses a potential risk to environmental safety, leading to an increasing need to find eco-friendly and cost-effective techniques to remediate fomesafen-contaminated soils. In this article, a novel strain of Bacillus sp., FE-1 was isolated from paddy field soil. This strain was found to degrade fomesafen both in liquid medium and in soil. >82.9% of fomesafen, at concentrations of 0.5, 1 and 10mgL-1, was degraded by Bacillus sp. FE-1 in liquid medium within 14h. The optimal pH and temperature for degradation were 7.0 and 35°C, respectively. Soil samples inoculated with strain FE-1 showed significantly increased rates of fomesafen degradation. Two metabolites of fomesafen degradation were detected and identified as amino-fomesafen and 5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-amino-benzoic acid. This is the first report of a novel fomesafen biodegradation pathway involving the reduction of a nitro group followed by the hydrolysis of an amide bond. The excellent remediation capability of the isolate FE-1 to detoxify fomesafen-contaminated soil was shown by bioassay of the sensitive aftercrop corn. The results indicate that Bacillus sp. FE-1 has potential for use in the bioremediation of fomesafen-contaminated soil.

Cui N ，Wang S ，Khorram MS ，Fang H ，Yu Y ... -  《-》

Biodegradation of fomesafen by strain Lysinibacillus sp. ZB-1 isolated from soil.

Liang B ，Lu P ，Li H ，Li R ，Li S ，Huang X ... -  《-》

Microbial degradation of fomesafen by a newly isolated strain Pseudomonas zeshuii BY-1 and the biochemical degradation pathway.

Feng ZZ ，Li QF ，Zhang J ，Zhang J ，Huang X ，Lu P ，Li SP ... -  《-》

Remediation of fomesafen contaminated soil by Bacillus sp. Za: Degradation pathway, community structure and bioenhanced remediation.

Zhao G ，Zhou J ，Tian Y ，Chen Q ，Mao D ，Zhu J ，Huang X ... -  《-》

[Isolation, identification and soil remediation of fomesafen-degrading strain FB8].

Yang F ，Liu L ，Liu C ，Li Y ，Yu H ，Song F ，Geng G ... -  《-》