文献类型： 外文期刊
作者： Zhang, Mingxia 1 ; Li, Yong 2 ; Mu, Qi'e 1 ; Feng, Fayun 2 ; Yu, Xiangyang 2 ; Ge, Jing 2 ; Zhang, Yun 1 ; Nie, Jinfang 1 ;
作者机构： 1.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, 50 Zhongling St, Nanjing 210014, Peoples R China
3.Jiangsu Univ, Sch Food & Biol Engn, 301 Zhenjiang City Univ Rd, Zhenjiang 212001, Jiangsu, Peoples R China
关键词： Chlorpyrifos; Bacterial degradation; Metabolomics; Carbon metabolism; Energy sources
期刊名称：CHEMOSPHERE （ 影响因子：8.943； 五年影响因子：8.52 ）
ISSN： 0045-6535
年卷期： 2022 年 297 卷
页码：
收录情况： SCI
摘要： Many microorganisms have been reported to degrade organic pollutants in the environment and plants, however, the specific information about the effect of organic pollutants on the metabolism of microorganisms is poorly investigated. In the present study, the effect of the pesticide chlorpyrifos on the metabolic profiling of Bacillus megaterium strain RRB was investigated using metabolomics. Our data show that chlorpyrifos acting as an energy source was readily concentrated in the strain RRB from the culture medium. During early cultivation, the shift in energy sources from tryptic soy broth to chlorpyrifos may temporarily cause the strain RRB to enter the starvation stage, where some synthesis-related amino acids and intermediates in the pathways of TCA cycle and pyridoxine metabolism were decreased. The increase of nucleotides and lysine may help the strain RRB cope with the starvation stage. During later cultivation, many metabolites including organic acids, nucleosides and sugar phosphates were gradually accumulated, which indicates that chlorpyrifos could be utilized by the stain RRB to generate metabolites bacteria needed. In addition, arginine acting as a nitrogen-storage amino acid was gradually decreased with later cultivation, suggesting that chlorpyrifos could not provide enough nitrogen for bacteria.
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