Recent advances in sequencing technology mean it is increasingly feasible to perform bacterial population analysis at the whole genome level.
After a single centrifugation step, at 4,000 × g, 5 min at 4 °C, 1 ml of each supernatant was transferred to 2-ml tubes and stored at −70 °C for later bacterial analysis.
The caecum and colons were dissected, cut longitudinally, washed in a PBS solution, and then either a piece was immersed in 10% neutral buffered formalin (Fisher) for immunofluorescence or a piece was flash frozen in LN2 and stored at −80°C prior for bacterial analysis.
We observed a great variability of duration between bacterial injection and occurrence of shock so we also performed analysis at the onset of shock for each piglet.
Particularly, 454 pyrosequencing of bacterial 16S gene tags coupled with bioinformatics provides a high-throughput and cost-effective approach for the comprehensive analysis of bacterial communities at the species level.
Until recently, the exploitation of strain diversity (within the same bacterial species) at the nucleotide level was usually restricted to the genomic analysis of bacterial pathogens.
Pathogenomics is defined as the analysis, at genomic level, of the processes involved in bacterial pathogenesis caused by the interaction of pathogenic microbes and their hosts [ 35].
There seems to be one intriguing point: The analysis of 235 bacterial genomes hints at the distribution of S values following exponential distribution.
MicroScope was initially dedicated to the annotation and analysis of Acinetobacter baylyi APD1, the first genome to be annotated with the system (20), and was made available to biologists who did not have the required computing infrastructure to perform efficient annotation and analysis of their bacterial genomes sequenced at the Genoscope.
Similar clustering patterns were apparent in the non-metric multidimensional scaling analysis of bacterial communities at both the class and genus levels (Additional file 1: Figure S7).> -wrap-foot> a OTUs are defined at the 98% sequence similarity using 16S rRNA hypervariable V6 region.
