Project description:The transcriptional global profiles of the wild-type strain Bacillus thuringiensis 407 and a cdgF deletion mutant were compared after 1.5 hours of growth in an planktonic culture to analyze the effect of deletion of cdgF, which is involved in c-di-GMP signaling, on the global expression profile of B. thuringiensis 407
Project description:Bacillus thuringiensis is an insect pathogen that has been used widely as a biopesticide. Here, we report the genome sequence of strain 407 Cry-, which is used to study the genetic determinants of pathogenicity. The genome consists of a 5.5-Mb chromosome and nine plasmids, including a novel 502-kb megaplasmid.
Project description:Comparison at t2 (two hours into post-exponential phase growth as analyzed by OD measurements) of global expression profiles from a Bacillus thuringiensis 407 delta-sinI delta-sinR double gene deletion strain versus a Bacillus thuringiensis 407 delta-sinI single gene deletion strain, to analyze global expression changes following deletion of the sinR transcriptional regulator gene in a sinI-negative background.
Project description:To determine Sigma 54 (SigL) reglons in Bacillus thuringiensis HD73 strain, A sigLmutant, HD(ΔsigL::kan), was constructed with insertion of kanamycin resistance gene cassete. We have employed whole genome microarray expression profiling as a discovery platform to identify the difference of gene expression between mutant and wild-type strains.
Project description:Comparison in late exponential phase (culture OD600 = 3) of global expression profiles from a Bacillus thuringiensis 407 strain overexpressing transcriptional regulator MogR from xylose inducible vector pHT304-Pxyl, versus an isogenic empty vector control strain, to analyze global expression changes resulting from MogR overexpression
Project description:Comparison of global expression profiles from a Bacillus thuringiensis 407 strain overexpressing the diguanylate cyclase CdgF (BTB_c06420) from the xylose inducible vector pHT304-Pxyl, versus an isogenic empty vector control strain, to analyze global expression changes resulting from CdgF overexpression
Project description:B. thuringiensis 407 nprA::lacZ strain was compared with an isogenic delta-nprR-nprX strain to explore the effects of nprR-nprX deletion. NprR is a transition state regulator which is activated towards the end of the exponential phase by a part of the signaling peptide NprX. We made direct comparisons of RNA from the two strains collected at T1 and T3, one and three hours after the transition to stationary phase, respectively. T1 was thought to be the early phase of NprR activation, while T3 was thought to be around the peak of NprR activation. All samples are biological replicates, and dye swap was performed between the different comparisons.
Project description:To determine Sigma 54 (SigL) reglons in Bacillus thuringiensis HD73 strain, A sigLmutant, HD(M-NM-^TsigL::kan), was constructed with insertion of kanamycin resistance gene cassete. We have employed whole genome microarray expression profiling as a discovery platform to identify the difference of gene expression between mutant and wild-type strains. 2 ml samples were separately harvested from B. thuringiensis HD73 and HD(M-NM-^TsigL::kan) strains grown in SchaefferM-bM-^@M-^Ys sporulation medium (SSM) at stages T7 of stationary phase (7 hours after the end of the exponential phase). Three independent repeats were performed for each stain.