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J Biotechnol. 2011 Aug 20;155(1):78-85. doi: 10.1016/j.jbiotec.2011.01.006. Epub 2011 Jan 22.

Genome sequence of B. amyloliquefaciens type strain DSM7(T) reveals differences to plant-associated B. amyloliquefaciens FZB42.

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  • 1Center for Biotechnology (CeBiTec) Universität Bielefeld, D-33594 Bielefeld, Germany.

Abstract

The complete genome sequence of Bacillus amyloliquefaciens type strain DSM7(T) is presented. A comparative analysis between the genome sequences of the plant associated strain FZB42 (Chen et al., 2007) with the genome of B. amyloliquefaciens DSM7(T) revealed obvious differences in the variable part of the genomes, whilst the core genomes were found to be very similar. The strains FZB42 and DSM7(T) have in common 3345 genes (CDS) in their core genomes; whilst 547 and 344 CDS were found to be unique in DSM7(T) and FZB42, respectively. The core genome shared by both strains exhibited 97.89% identity on amino acid level. The number of genes representing the core genome of the strains FZB42, DSM7(T), and Bacillus subtilis DSM10(T) was calculated as being 3098 and their identity was 92.25%. The 3,980,199 bp genome of DSM7(T) contains numerous genomic islands (GI) detected by different methods. Many of them were located in vicinity of tRNA, glnA, and glmS gene copies. In contrast to FZB42, but similar to B. subtilis DSM10(T), the GI were enriched in prophage sequences and often harbored transposases, integrases and recombinases. Compared to FZB42, B. amyloliquefaciens DSM7(T) possessed a reduced potential to non-ribosomally synthesize secondary metabolites with antibacterial and/or antifungal action. B. amyloliquefaciens DSM7(T) did not produce the polyketides difficidin and macrolactin and was impaired in its ability to produce lipopeptides other than surfactin. Differences established within the variable part of the genomes, justify our proposal to discriminate the plant-associated ecotype represented by FZB42 from the group of type strain related B. amyloliquefaciens soil bacteria.

Copyright © 2011 Elsevier B.V. All rights reserved.

PMID:
21262282
[PubMed - indexed for MEDLINE]
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