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首页> 外文期刊>Environmental Science & Technology >Novel Strategy for Tracking the Microbial Degradation of Azo Dyes with Different Polarities in Living Cells
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Novel Strategy for Tracking the Microbial Degradation of Azo Dyes with Different Polarities in Living Cells

机译：追踪活细胞中不同极性偶氮染料微生物降解的新策略

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摘要

Direct visualization evidence is important for understanding the microbial degradation mechanisms. To track the microbial degradation pathways of azo dyes with different polar characterizations, sensors based on the fluorescence resonance energy transfer (FRET) from 1,8-naphthalimide to azo dyes were synthesized, in which the quenched fluorescence will recover when the azo bond was cleaved. In living cells, the sensor-tracking experiment showed that the low polarity and hydrophobic azo dye can be taken up into the cells and reduced inside the cells, whereas the high polarity and hydrophilic azo dye can be reduced only outside the cells because of the selective permeability of the cell membranes. These results indicated that there were two different bacterial degradation pathways available for different polarity azo dyes. To our knowledge, no fluorescent sensor has yet been designed for illuminating the microbial degradation mechanisms of organic pollutants with different characteristics.
机译：直接的可视化证据对于理解微生物降解机理很重要。为了追踪具有不同极性特征的偶氮染料的微生物降解途径，合成了基于从1,8-萘二甲酰亚胺到偶氮染料的荧光共振能量转移（FRET）的传感器，当偶氮键断裂时，淬灭的荧光将恢复。 。在活细胞中，传感器跟踪实验表明，低极性和疏水性偶氮染料可被吸收到细胞中并在细胞内被还原，而高极性和亲水性偶氮染料仅可在细胞外被还原，这是因为其选择性细胞膜的通透性这些结果表明对于不同极性的偶氮染料有两种不同的细菌降解途径。据我们所知，尚未设计出荧光传感器来照亮具有不同特性的有机污染物的微生物降解机理。

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  • 来源
    《Environmental Science & Technology》 |2015年第19期|11356-11362|共7页
  • 作者

    Fei Liu; Meiying Xu; Xingjuan Chen; Yonggang Yang; Haiji Wang; Guoping Sun;

  • 作者单位

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

    State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, 100 Central Xianlie Road, Guangzhou, Guangdong 510070, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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