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Effects of Bacillus in Pectobacterium quorum quenching: A survey of two different acyl-homoserine lactonases
A. Yamchi, M. Rahimi, R. Akbari, C. Ghobadi, H. Aryapour
Jazyk angličtina Země Česko
Typ dokumentu časopisecké články
- MeSH
- Bacillus * genetika enzymologie MeSH
- bakteriální proteiny * genetika metabolismus MeSH
- biofilmy růst a vývoj MeSH
- karboxylesterhydrolasy * genetika metabolismus MeSH
- klonování DNA MeSH
- metaloendopeptidasy MeSH
- Pectobacterium carotovorum genetika enzymologie patogenita MeSH
- quorum sensing * MeSH
- regulace genové exprese u bakterií MeSH
- virulence MeSH
- Publikační typ
- časopisecké články MeSH
Numerous functions in pathogenic Pectobacterium are regulated by quorum sensing (QS). Two different aiiA genes isolated from Bacillus sp. A24(aiiAA24) and Bacillus sp. DMS133(aiiADMS133) were used. Both genes encode acyl-homoserine lactonase (AiiA), which disrupts QS in Pectobacterium. To investigate the effect of different AiiAs on the inhibition of Pectobacterium carotovorum pathogenicity, two aiiA genes from different Bacillus strains were cloned and the resulting plasmids pME6863 (aiiAA24) and pME7080 (aiiADMS133) were transformed into P. carotovorum EMPCC cells. The effects of different lactonases on virulence features such as enzymatic activity, twitching and swimming motilities, and production of pellicle and biofilm formation were investigated. In EMPCC/pME6863, twitching and swimming motilities, and pellicle production were significantly reduced compared with EMPCC/pME7080. Quantitative real-time PCR (qRT-PCR) was used to measure virulence gene expression in transformed cells compared with expression levels in wild-type EMPCC. The expression of peh and hrpL genes was greatly reduced in EMPCC/pME6863 compared with EMPCC/pME7080. The sequence alignment and molecular dynamic modeling of two different AiiAA24 and AiiADMS133 proteins suggested that the replacement of proline 210 from AiiAA24 to serine in AiiADMS133 caused the reduction of enzyme activity in AiiADMS133.
Department of Agricultural Biotechnology Isfahan University of Technology Isfahan Iran
Department of Biology Faculty of Science Golestan University Gorgan Iran
Department of Horticulture Sciences Isfahan University of Technology Isfahan Iran
Citace poskytuje Crossref.org
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- $a Numerous functions in pathogenic Pectobacterium are regulated by quorum sensing (QS). Two different aiiA genes isolated from Bacillus sp. A24(aiiAA24) and Bacillus sp. DMS133(aiiADMS133) were used. Both genes encode acyl-homoserine lactonase (AiiA), which disrupts QS in Pectobacterium. To investigate the effect of different AiiAs on the inhibition of Pectobacterium carotovorum pathogenicity, two aiiA genes from different Bacillus strains were cloned and the resulting plasmids pME6863 (aiiAA24) and pME7080 (aiiADMS133) were transformed into P. carotovorum EMPCC cells. The effects of different lactonases on virulence features such as enzymatic activity, twitching and swimming motilities, and production of pellicle and biofilm formation were investigated. In EMPCC/pME6863, twitching and swimming motilities, and pellicle production were significantly reduced compared with EMPCC/pME7080. Quantitative real-time PCR (qRT-PCR) was used to measure virulence gene expression in transformed cells compared with expression levels in wild-type EMPCC. The expression of peh and hrpL genes was greatly reduced in EMPCC/pME6863 compared with EMPCC/pME7080. The sequence alignment and molecular dynamic modeling of two different AiiAA24 and AiiADMS133 proteins suggested that the replacement of proline 210 from AiiAA24 to serine in AiiADMS133 caused the reduction of enzyme activity in AiiADMS133.
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