铜,和修改生物反应器中的结构和功能细菌生物多样性:猎枪甲基因组学研究
Jesús Bernardino Velázquez-Fernández1,2, Claudia Elizabeth Aceves Suriano3, Frédèric Thalasso3
1Department of Biotechnology and Bioengineering, Center for Research and Avanced Studies of the National Polythecnic Institute, Cinvestav Mexico City, Mexico. jesusb.velazquez@cinvestav.mx.
BMC microbiology
|August 24, 2024
概括
废水生物反应器中铜,和的度增加改变了细菌群体的结构和功能. 虽然碳代谢保持稳定,但观察到硫循环和外聚糖化物生产的变化,影响了生物反应器的整体性能.
科学领域:
- 环境微生物学 环境微生物学
- 生物反应器工程 生物反应器工程
- 废水处理 废水处理
背景情况:
- 铜 (Cu), (Zn) 和 (Ni) 是细菌酶在低度下必需的微量金属.
- 这些金属的高度可以抑制废水生物反应器中的微生物功能.
研究的目的:
- 研究Cu,Zn和Ni度增加对细菌群体结构和代谢功能的影响.
- 分析以前报告的金属度可以抑制细菌代谢.
主要方法:
- 枪支元基因组学被用来分析细菌社区结构和代谢功能.
- 对废水生物反应器施加了Cu,Zn和Ni的增量度.
主要成果:
- 在金属度较高 (31.5 μM Cu,112.4 μM Ni,122.3 μM Zn) 时,细菌群体结构发生了转移,Delftia,Stenotrophomonas和Sphingomonas在Achromobacter和Agrobacterium上占主导地位.
- 异质型代谢功能基本上没有受到影响,但检测到硫生物地球化学循环的变化.
- 尽管社区结构发生了重大变化,但碳代谢的功能变化是最小的.
结论:
- 增加的金属度导致社区的丰富性和多样性下降.
- 观察到特定的细菌相互作用,其中Delftia对抗了Pseudomonas和Xanthomonadaceae.
- 虽然大多数基因丰度稳定,但对外聚糖合成和化物减少的基因减少,可能会改变生物反应器的功能.
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