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FliL Differentially Interacts with Two Stator Systems To Regulate Flagellar Motor Output in Pseudomonas aeruginosa. Appl Environ Microbiol 2022; 88:e0153922. [PMID: 36286538 PMCID: PMC9680632 DOI: 10.1128/aem.01539-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
FliL emerged as a modulator of flagellar motor function in several bacterial species, but its function in
Pseudomonas aeruginosa
was unknown. Here, by performing single-motor studies using a bead assay, we elucidated its effects on the flagellar motor in
P. aeruginosa
.
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Yin L, Li Q, Xue M, Wang Z, Tu J, Song X, Shao Y, Han X, Xue T, Liu H, Qi K. The role of the phoP transcriptional regulator on biofilm formation of avian pathogenic Escherichia coli. Avian Pathol 2019; 48:362-370. [PMID: 30958690 DOI: 10.1080/03079457.2019.1605147] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PhoP plays an important role as a transcriptional regulator in the two-component phoP/phoQ regulatory system, which is widely present in Gram-negative bacteria. In this study, we used DNA microarray-based technology to evaluate the role of phoP in biofilm formation in avian pathogenic Escherichia coli (APEC). Differences in gene transcription between APEC wild-type and phoP mutant strains were determined. Mutation of the phoP transcriptional regulator affects the expression profile of genes involved in processes such as flagellar assembly, ABC transporters, quorum sensing, and bacterial chemotaxis. Deletion of phoP in APEC reduced biofilm formation, as indicated by crystal violet staining and scanning electron microscopy (SEM). In addition, the phoP gene was found to be associated with changes in bacterial drug resistance and cell-membrane-related properties. This study shows that phoP plays an important regulatory role in APEC biofilm formation, and provides new insights into strategies for preventing and controlling APEC infection.
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Affiliation(s)
- Lei Yin
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Qianwen Li
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Mei Xue
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Zeping Wang
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Jian Tu
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Xiangjun Song
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Ying Shao
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Xiangan Han
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Ting Xue
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Hongmei Liu
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
| | - Kezong Qi
- a Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control , College of Animal Science and Technology, Anhui Agricultural University , Hefei , People's Republic of China
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