Architecture of Burkholderia cepacia complex σ70 gene family: evidence of alternative primary and clade-specific factors, and genomic instability

Aymeric Menard (1) , Paulina Estrada de Los Santos (1) , Arnault Graindorge (1) , Benoit Cournoyer (1)

1 LEM - Laboratoire d'Ecologie Microbienne - UMR 5557

Background: The Burkholderia cepacia complex (Bcc) groups bacterial species with beneficial properties that can improve crop yields or remediate polluted sites but can also lead to dramatic human clinical outcomes among cystic fibrosis (CF) or immuno-compromised individuals. Genome-wide regulatory processes of gene expression could explain parts of this bacterial duality. Transcriptional σ70 factors are components of these processes. They allow the reversible binding of the DNA-dependent RNA polymerase to form the holoenzyme that will lead to mRNA synthesis from a DNA promoter region. Bcc genome-wide analyses were performed to investigate the major evolutionary trends taking place in the σ70 family of these bacteria.

Domaines: Biodiversité et Ecologie; Génomique, Transcriptomique et Protéomique [q-bio.GN]; Génétique; Bactériologie

Aymeric Menard, Paulina Estrada de Los Santos, Arnault Graindorge, Benoit Cournoyer. Architecture of Burkholderia cepacia complex σ70 gene family: evidence of alternative primary and clade-specific factors, and genomic instability. BMC Genomics, 2007, 8 (308), pp.1-16. ⟨10.1186/1471-2164-8-308⟩. ⟨halsde-00216116⟩