Abstract:
:Bacillus subtilis fmbR-1 was obtained from wild-type B. subtilis fmbR by replacement of the native promoter of the surfactin operon with the inducible promoter Pspac. The recombinant B. subtilis fmbR-1 produced more antibacterial substances than the wild-type strain. The overproducing phenotype was related to the enhancement of antagonistic activities against Bacillus cereus. HPLC peaks of surfactin for recombinant fmbR-1 showed patterns of lipopeptides similar to those of the wild-type strain, and surfactin production of the recombinant fmbR-1 was up to about fivefold greater than that of the wild-type strain without induction by isopropyl beta--1-thiogalactopyranoside. However, the production of surfactin increased to about 10-fold more than that of the wild-type strain when it was induced by isopropyl beta--1-thiogalactopyranoside.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Sun H,Bie X,Lu F,Lu Y,Wu Y,Lu Zdoi
10.1139/w09-044subject
Has Abstractpub_date
2009-08-01 00:00:00pages
1003-6issue
8eissn
0008-4166issn
1480-3275pii
w09-044journal_volume
55pub_type
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