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<p>Sulfate-reducing bacteria (SRB) are a major cause of microbially-induced corrosion (MIC) and souring (MIS), leading to significant challenges in industries like oil recovery and wastewater treatment. Due to SRB’s resistance to antimicrobial agents, bacteriophage (phage) therapy offers a promising alternative for SRB control. In this study, a novel lytic phage, SRB7757, targeting <i>Desulfovibrio vulgaris</i>, was isolated from sewage. SRB7757 inhibited sulfide production by 92.3% within 24&#xa0;h and significantly reduced corrosion on metal specimens after 28 days, highlighting its potential in controlling MIC and MIS. Genome analysis revealed SRB7757 has a genome size of 142,573&#xa0;bp, 217 ORFs, and 6 tRNAs, and belongs to the Chaseviridae family. SRB7757 exhibits a latent period of 4&#xa0;h, a burst size of ~ 100 PFU/cell, and is stable between 4&#xa0;°C and 60&#xa0;°C across a pH range of 2.0–12.0. Two predicted lytic enzymes of SRB7757 demonstrated higher inactivation and biofilm removal rates.</p>

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Bacteriophage application in inhibiting corrosion- producing bacteria

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月23日

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  • Guangming Zhang,
  • Zisheng Guo,
  • Shuo Liu,
  • Qiaoli Yang,
  • Yiming Yuan,
  • Ke Guo,
  • Weixiao Wang,
  • Haina Wang,
  • Jie Feng,
  • Wei Chen,
  • Yanmei Sun,
  • Shiwei Wang

摘要

Sulfate-reducing bacteria (SRB) are a major cause of microbially-induced corrosion (MIC) and souring (MIS), leading to significant challenges in industries like oil recovery and wastewater treatment. Due to SRB’s resistance to antimicrobial agents, bacteriophage (phage) therapy offers a promising alternative for SRB control. In this study, a novel lytic phage, SRB7757, targeting Desulfovibrio vulgaris, was isolated from sewage. SRB7757 inhibited sulfide production by 92.3% within 24 h and significantly reduced corrosion on metal specimens after 28 days, highlighting its potential in controlling MIC and MIS. Genome analysis revealed SRB7757 has a genome size of 142,573 bp, 217 ORFs, and 6 tRNAs, and belongs to the Chaseviridae family. SRB7757 exhibits a latent period of 4 h, a burst size of ~ 100 PFU/cell, and is stable between 4 °C and 60 °C across a pH range of 2.0–12.0. Two predicted lytic enzymes of SRB7757 demonstrated higher inactivation and biofilm removal rates.