Genomotyping of Pseudomonas putida strains using P. putida KT2440-based high-density DNA microarrays: implications for transcriptomics studies

H. Ballerstedt, R.J.M. Volkers, A.E. Mars, J.E. Hallsworth, V.A.P. Martins Dos Santos, J. Puchalka, J.B.J.H. van Duuren, G. Eggink, K.N. Timmis, J.A.M. de Bont, J. Wery

Research output: Contribution to journalArticleAcademicpeer-review

29 Citations (Scopus)

Abstract

Pseudomonas putida KT2440 is the only fully sequenced P. putida strain. Thus, for transcriptomics and proteomics studies with other P. putida strains, the P. putida KT2440 genomic database serves as standard reference. The utility of KT2440 whole-genome, high-density oligonucleotide microarrays for transcriptomics studies of other Pseudomonas strains was investigated. To this end, microarray hybridizations were performed with genomic DNAs of subcultures of P. putida KT2440 (DSM6125), the type strain (DSM291T), plasmid pWW0-containing KT2440-derivative strain mt-2 (DSM3931), the solvent-tolerant P. putida S12, and several other Pseudomonas strains. Depending on the strain tested, 22 to 99% of all genetic elements were identified in the genomic DNAs. The efficacy of these microarrays to study cellular function was determined for all strains included in the study. The vast majority of DSM6125 genes encoding proteins of primary metabolism and genes involved in the catabolism of aromatic compounds were identified in the genomic DNA of strain S12: a prerequisite for reliable transcriptomics analyses. The genomotypic comparisons between Pseudomonas strains were used to construct highly discriminative phylogenetic relationships. DSM6125 and DSM3931 were indistinguishable and clustered together with strain S12 in a separate group, distinct from DSM291T. Pseudomonas monteilii (DSM14164) clustered well with P. putida strains.
Original languageEnglish
Pages (from-to)1133-1142
JournalApplied Microbiology and Biotechnology
Volume75
Issue number5
DOIs
Publication statusPublished - 2007

Keywords

  • ribosomal-rna sequence
  • taxonomic diversity
  • clinical specimens
  • proteomic analysis
  • stress-response
  • growth-phase
  • expression
  • toluene
  • aeruginosa
  • dot-t1e

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