TAXONOMY OF PSEUDOMONAS SYRINGAE

J.M. Young

Abstract


The evolution of the processes of classification, identification and nomenclature of Pseudomonas syringae are described. Originally referring to a pathogenic species of lilac, in the revision of bacterial names in 1980, P. syringae came to represent more than 40 host specific pathogenic populations, as pathovars. DNA-DNA hybridization studies and recent multilocus sequence analyses (MLSA) indicate a ‘P. syringae complex’ that now encompasses up to ten Pseudomonas species and 60 pathovars of P. syringae. A re-evaluation of the complex using poly-phasic approaches could see the revision of these species and the distribution of pathovars in a number of species or genomospecies. Alternative classifications and nomenclature of these taxa is discussed.

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DOI: http://dx.doi.org/10.4454/jpp.v92i1sup.2501

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EDIZIONI ETS, Pisa, Italy