Pseudomonas savastanoipv.savastanoi: some like it knot

We review how the recent sequencing of the P. savastanoi pv. savastanoi NCPPB 3335 draft genome, and the complete sequence of its three-plasmid complement, has allowed the identification of the virulence gene complement of this tumour-inducing pathogen of woody hosts

Cayo Ramos; Isabel M. Matas; Leire Bardaji; Isabel M. Aragón; Jesús Murillo


Scholarcy highlights

  • Pseudomonas syringae is an economically important pathogen and one of the most relevant models for the study of plant– microbe interactions
  • The species is currently a taxonomic conundrum and has been pulled together with P. amygdali, P. avellanae, P. cannabina, P. caricapapayae, P. ficuserectae, P. meliae, P. savastanoi, P. tremae and P. viridiflava into a group designated as the P. syringae complex, which could correspond to at least nine different species
  • Diverse research groups worldwide have made substantial contributions towards the understanding of the biology, epidemiology and control of this pathogen; most strains of P. savastanoi pv. savastanoi are highly recalcitrant to genetic manipulation, which has significantly slowed down their molecular analysis
  • Pseudomonas savastanoi pathogenicity and virulence are generally tested on 1–3-year-old olive plants
  • 2010) encodes a region of about 15 kb, named VR8, which is absent in all sequenced P. syringae strains infecting herbaceous plants, but shared with P. syringae pathovars infecting woody hosts, such as aesculi, morsprunorum and actinidiae, which are pathogenic to chestnut, cherry and kiwi, respectively
  • The complete sequences of the three-pPT23A-like family of plasmids plasmid complement of strain NCPPB 3335 contain 152 predicted coding sequence; the majority have been annotated as hypothetical proteins, followed by 37 CDSs involved in DNA metabolism, including plasmid replication and maintenance
  • Taxonomy: Kingdom Bacteria; Phylum Proteobacteria; Class Gammaproteobacteria; Family Pseudomonadaceae; Genus Pseudomonas; included in genomospecies 2 together with at least P. amygdali, P. ficuserectae, P. meliae and 16 other pathovars

Need more features? Save interactive summary cards to your Scholarcy Library.