ArticleApplied and environmental microbiology2014
Disruption of putrescine biosynthesis in Shewanella oneidensis enhances biofilm cohesiveness and performance in Cr(VI) immobilization.
Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.
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Who cites it
36 citing papers in PubMed, 1 synthesis or guideline pooled it, 135 citations in OpenAlex.
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- A bibliography study of Shewanella oneidensis biofilm.FEMS microbiology ecology · 2023Article
- A polyamine acetyltransferase regulates the motility and biofilm formation of Acinetobacter baumannii.Nature communications · 2023Article
- Reducing the matrix effect in mass spectral imaging of biofilms using flow-cell culture.Frontiers in chemistry · 2023Article
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- Recent Advances in the Siderophore Biology ofFrontiers in microbiology · 2022Review
- Extracellular riboflavin induces anaerobic biofilm formation in Shewanella oneidensis.Biotechnology for biofuels · 2021Article
- Engineering S. oneidensis for Performance Improvement of Microbial Fuel Cell-a Mini Review.Applied biochemistry and biotechnology · 2021Review
- Ornithine capture by a translating ribosome controls bacterial polyamine synthesis.Nature microbiology · 2020Article
- Promiscuous Enzymes Cause Biosynthesis of Diverse Siderophores in Shewanella oneidensis.Applied and environmental microbiology · 2020Article
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although biofilm-based bioprocesses have been increasingly used in various applications, the long-term robust and efficient biofilm performance remains one of the main bottlenecks. In this study, we demonstrated that biofilm cohesiveness and performance of Shewanella oneidensis can be enhanced through disrupting putrescine biosynthesis. Through random transposon mutagenesis library screening, one hyperadherent mutant strain, CP2-1-S1, exhibiting an enhanced capability in biofilm formation, was obtained. Comparative analysis of the performance of biofilms formed by S. oneidensis MR-1 wild type (WT) and CP2-1-S1 in removing dichromate (Cr2O7(2-)), i.e., Cr(VI), from the aqueous phase showed that, compared with the WT biofilms, CP2-1-S1 biofilms displayed a substantially lower rate of cell detachment upon exposure to Cr(VI), suggesting a higher cohesiveness of the mutant biofilms. In addition, the amount of Cr(III) immobilized by CP2-1-S1 biofilms was much larger, indicating an enhanced performance in Cr(VI) bioremediation. We further showed that speF, a putrescine biosynthesis gene, was disrupted in CP2-1-S1 and that the biofilm phenotypes could be restored by both genetic and chemical complementations. Our results also demonstrated an important role of putrescine in mediating matrix disassembly in S. oneidensis biofilms.
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