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Microbiology. 2000 Oct;146 ( Pt 10):2385-94.

Phylogeny of the genus Pseudomonas: intrageneric structure reconstructed from the nucleotide sequences of gyrB and rpoD genes.

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  • 1Marine Biotechnology Institute, Kamaishi Laboratories, Kamaishi City, Iwate 026, Japan. yamamotost@nichirei.co.jp

Abstract

Phylogenetic analysis of the genus Pseudomonas: was conducted by using the combined gyrB and rpoD nucleotide sequences of 31 validly described species of Pseudomonas: (a total of 125 strains). Pseudomonas: strains diverged into two major clusters designated intrageneric cluster I (IGC I) and intrageneric cluster II (IGC II). IGC I was further split into two subclusters, the 'P: aeruginosa complex', which included P: aeruginosa, P: alcaligenes, P: citronellolis, P: mendocina, P: oleovorans and P: pseudoalcaligenes, and the 'P: stutzeri complex', which included P: balearica and P: stutzeri. IGC II was further split into three subclusters that were designated the 'P: putida complex', the 'P: syringae complex' and the 'P: fluorescens complex'. The 'P: putida complex' included P: putida and P: fulva. The 'P: syringae complex' was the cluster of phytopathogens including P: amygdali, P: caricapapayae, P: cichorii, P: ficuserectae, P: viridiflava and the pathovars of P. savastanoi and P. syringae. The 'P. fluorescens complex' was further divided into two subpopulations, the 'P. fluorescens lineage' and the 'P. chlororaphis lineage'. The 'P. fluorescens lineage' contained P. fluorescens biotypes A, B and C, P. azotoformans, P. marginalis pathovars, P. mucidolens, P. synxantha and P. tolaasii, while the 'P. chlororaphis lineage' included P. chlororaphis, P. agarici, P. asplenii, P. corrugata, P. fluorescens biotypes B and G and P. putida biovar B. The strains of P. fluorescens biotypes formed a polyphyletic group within the 'P. fluorescens complex'.

PMID:
11021915
[PubMed - indexed for MEDLINE]
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