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Unravelling diversity and metabolic potential of microbial consortia at each stage of leather sewage treatment

机译：在皮革污水处理的每个阶段解开微生物结束的多样性和代谢潜力

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摘要

Activated sludge is essential for the biological wastewater treatment process and the identification of active microbes enlarges awareness of their ecological functions in this system. Microbial communities and their active members were investigated in activated sludge from a leather sewage treatment plant by a combined approach targeting both 16S rRNA and 16S rRNA genes. Although active bacteria obtained by RNA analysis exhibit similar diversity with DNA- based populations, the distribution of microbes significantly differed between the total and active communities. Several active taxa showed low abundance or even absence in the DNA- derived community. Moreover, microbial consortia, particularly bacterial communities, distinctly distributed at a particular treatment stage and both the total and active bacterial communities displayed high environmental sensitivity. Distributions of archaeal communities remained stable and the overrepresentations of active Cenarchaeaceae and Nitrosopumilaceae were potentially associated with ammonia oxidation across the treatment process. Furthermore, bacteria quantitatively dominate the microbial community in activated sludge and the 16S rRNA : 16S rRNA gene ratios of bacteria were positively correlated with the removal of contaminants. The results indicate that both dominant and lowabundance taxa with high potential activity play pivotal roles in removal of contaminants within sewage.
机译：活性污泥对于生物废水处理过程至关重要，并且活性微生物的鉴定扩大了在该系统中对其生态功能的认识。通过靶向16S rRNA和16S rRNA基因的组合方法，研究了微生物污水处理污泥的活性污泥中的活性污泥。尽管通过RNA分析获得的活性细菌表现出与基于DNA的群体类似的多样性，但在总和活跃的社区之间微生物的分布显着差异。几个活跃的分类群表现出低丰度甚至在DNA派生的社区中缺席。此外，微生物共聚物，特别是细菌群落，明显地分布在特定治疗阶段，并且总和活性细菌社区都显示出高的环境敏感性。古群落的分布仍然稳定，活性CenarchAeae和亚硝基纤维的过度陈述可能与整个治疗过程中的氨氧化有关。此外，细菌定量统治激活污泥中的微生物群落，16S rRNA：16S rRNA基因比与去除污染物呈正相关。结果表明，具有高潜在活动的主导和低分类基因群体在污水中除去污染物的枢轴作用。

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  • 来源
    《RSC Advances》 |2017年第66期|共11页
  • 作者

    Liang Hebin; Ye Dongdong; Luo Lixin;

  • 作者单位

    South China Univ Technol Sch Biosci &

    Bioengn Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Biosci &

    Bioengn Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Biosci &

    Bioengn Guangzhou 510006 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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