Scholarlink

Abstract <p>Noxious odors from swine farms pose significant health and environmental concerns. Hydrogen sulfide (H<sub>2</sub>S) is one of the major compounds causing noxious odors. Using biological inoculants offers a promising, efficient, and cost-effective method to reduce H<sub>2</sub>S emissions from these farms. Several studies have found that <i>Priestia megaterium</i> (formerly <i>Bacillus megaterium</i>) can help mitigate the production of H<sub>2</sub>S. However, detailed knowledge regarding its mechanisms of action is still limited. In this study, the potential of novel strain of <i>P. megaterium,</i> strain S188, for the reduction of H<sub>2</sub>S in swine manure has been demonstrated. The artificial manure-based assay revealed that <i>P. megaterium</i> S188 significantly reduced the headspace concentration of H<sub>2</sub>S. Moreover, transcriptomic analysis revealed that exposure to H<sub>2</sub>S upregulated the expression of several cysteine and methionine biosynthesis-related genes in <i>P. megaterium</i> S188. Furthermore, treatment of swine manure with <i>P. megaterium</i> S188 was associated with significant modulation of the microbiota in the manure. Overall, this study provides insights into the putative mechanisms underlying the reduction in H<sub>2</sub>S levels mediated by <i>P. megaterium</i> S188 and its potential as a biological inoculant for H<sub>2</sub>S mitigation in swine farms.</p> Key points <p>• <i>Priestia megaterium S188 has shown the ability to lower </i><i>H</i><sub><i>2</i></sub><i>S</i><i>&#xa0;from swine manure.</i></p> <p>• <i>Transcriptomic analysis revealed upregulation of H</i><sub><i>2</i></sub><i>S-related biosynthesis genes.</i></p> <p>• <i>P. megaterium S188 treatment is associated with changes in the manure microbiota.</i></p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Priestia megaterium reduces hydrogen sulfide level in swine manure potentially through an assimilatory mechanism and microbiota modulation

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月19日

查看全文
  • Sang Hoon Kim,
  • Robie Vasquez,
  • Ji Hoon Song,
  • Dae-Kyung Kang

摘要

Abstract

Noxious odors from swine farms pose significant health and environmental concerns. Hydrogen sulfide (H2S) is one of the major compounds causing noxious odors. Using biological inoculants offers a promising, efficient, and cost-effective method to reduce H2S emissions from these farms. Several studies have found that Priestia megaterium (formerly Bacillus megaterium) can help mitigate the production of H2S. However, detailed knowledge regarding its mechanisms of action is still limited. In this study, the potential of novel strain of P. megaterium, strain S188, for the reduction of H2S in swine manure has been demonstrated. The artificial manure-based assay revealed that P. megaterium S188 significantly reduced the headspace concentration of H2S. Moreover, transcriptomic analysis revealed that exposure to H2S upregulated the expression of several cysteine and methionine biosynthesis-related genes in P. megaterium S188. Furthermore, treatment of swine manure with P. megaterium S188 was associated with significant modulation of the microbiota in the manure. Overall, this study provides insights into the putative mechanisms underlying the reduction in H2S levels mediated by P. megaterium S188 and its potential as a biological inoculant for H2S mitigation in swine farms.

Key points

• Priestia megaterium S188 has shown the ability to lower H2S from swine manure.

• Transcriptomic analysis revealed upregulation of H2S-related biosynthesis genes.

• P. megaterium S188 treatment is associated with changes in the manure microbiota.

Graphical Abstract