转录组
食品科学
农药残留
发酵
生物降解
环境污染
细菌
杀虫剂
化学
微生物
生物
生物技术
基因
生物化学
遗传学
基因表达
环境科学
有机化学
环境保护
农学
作者
Xuerui Zhou,Jie Tang,Su Wang,Yingyue Zhang,Hong Ye,Qing Zhang,Wenliang Xiang,Ting Cai,Chaoyi Zeng
出处
期刊:Chemosphere
[Elsevier]
日期:2023-04-01
卷期号:320: 138017-138017
被引量:5
标识
DOI:10.1016/j.chemosphere.2023.138017
摘要
Beta-cypermethrin (β-CY) is an organic compound that is widely used as a synthetic pesticide in agriculture and family. Excessive accumulation of β-CY inevitably causes environmental pollution, which has led to food safety and human health concerns. Identification of microorganisms from food sources that are capable of β-CY biodegradation may help prevent pollution due to β-CY accumulation. Here, Gordonia alkanivorans GH-1, which was isolated from the traditional Sichuan fermented food, Pixian Doubanjiang, could not only degrade 82.76% of 50 mg/L β-CY at 96 h, but also degraded the intermediate degradation products including dibutyl phthalate (DBP), benzoic acid (BA) and phenol (Ph). This bacterial strain, thus, effectively improved the efficiency of removal of β-CY and its related metabolites, without being limited by toxic intermediates. Whole genome sequencing and transcriptomics analyses have demonstrated that the bacteria affected the transcription of genes related to cell response and material transport under the stress induced by β-CY, and thereby promoted degradation and transformation of β-CY. Moreover, a complete pathway of β-CY degradation is proposed based on the key genes involved in degradation. This study provides important theoretical significance and reference value for eliminating pesticide residues in agricultural products and food to ensure food safety.
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