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Names of Plant Pathogenic Bacteria, 1864-2004

J.M. Young, Landcare Research, Private Bag 92170, Auckland, New Zealand: (Convener)

C.T. Bull, US Department of Agriculture, 1636 E Alisal Street, Salinas, CA 93905, USA:

S.H. De Boer, Centre for Animal and Plant Health, 93 Mount Edward Road, Charlottetown, PE C1A 5T1, Canada:

G. Firrao, Dipartimento di Biologia Applicata alla Difesa delle Piante, Universita, via Scienze 208, 33100 Udine, Italy:

G.E. Saddler, Scottish Agricultural Science Agency, 82 Craigs Road, Edinburgh EH12 8NJ, Scotland:

D.E. Stead, Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, YO4 1LN, United Kingdom:

Y. Takikawa, Plant Pathology Laboratory, Shizuoka University, 836 Ohya, Shizuoka 422, Japan:

This list contains the names of all plant pathogenic bacteria that have been effectively and validly published in terms of the International Code of Nomenclature of Prokaryotes (�the Code� � hitherto the International Code of Nomenclature of Bacteria) (Lapage et al. 1992) and the Standards for Naming Pathovars (Dye et al. 1980), and their revision (Young et al. 1991a). Included are species names from the Approved Lists of Bacterial Names (Skerman et al. 1980), pathovar names listed by Dye et al. (1980), and names of pathogens reported since 1980.

In recent years, the taxonomy of plant pathogenic bacteria has been extensively revised. For several taxa, especially the Enterobacteriaceae, Pseudomonas syringae van Hall 1902 and Xanthomonas campestris (Pammel 1895) Dowson 1939, these revisions are incomplete. For some taxa there are several valid synonyms. The most recent name is used as the reference name (in bold italic) to which all other synonyms are referred. This does not mean that the reference name is always to be preferred. Alternative selections of valid names may be considered to give a more coherent nomenclature (Young et al. 1996; Young et al. 2003). Alternative valid names are listed in italic and cross-referenced to their reference names; synonyms under a reference name are preceded by '='. Names that are not considered valid are in italic and enclosed in square brackets '[  ]'. Names published since 1980 that are not considered valid have been included for completeness, with an explanatory note. A few names that are not valid, published before 1980, have been included for continuity.

New species combinations are sometimes proposed in publications without the formal transfer of pathovars allocated to the species. For continuity, the Committee on Taxonomy of Plant Pathogenic Bacteria, International Society for Plant Pathology (the Committee), who are the authors of this paper, has created the new pathovar combination Burkholderia gladioli pv. agaricicola (see below).

Names that have been changed to accord with correct Latin usage (Tr�per & De Clari 1997; Euz�by 1998) are listed here with their original spelling also indicated. Since these corrections were made, the Code has been amended to take account of the need for stability of names. Names that have been gazetted in the International Journal of Systematic and Evolutionary Microbiology are now the definitive names of the organism, regardless of orthographic errors in their Latin or Greek declension. The only exception involves correction of the gender of species epithets when they are proposed as new combinations (De Vos & Tr�per 2000).

Where names are published outside the International Journal of Systematic and Evolutionary Microbiology (previously the International Journal of Systematic Bacteriology), the reference is to the validating publication followed by the reference in which the original description was published. Apparent discrepancies between the publication dates of some species and their pathovars arise because pathovars are referred to the original publication but the species are referred to the validating publication in the International Journal of Systematic Bacteriology.

Some pathotype strains were originally so designated on the basis of earlier recommendation as a type strain (Sneath & Skerman 1966). It has subsequently been reported that some of these may be unsuitable because they do not reflect the pathogenic or other characteristics of the pathovar (Young et al. 1991a). These have been marked with an asterix '*'. Names reported after this list has been posted will be published annually in a secondary list at this website. It will be helpful if those publishing new names would send information to the Convenor of this Committee.


Revision: 31 December 2004


Abbreviations of Culture Collections


ATTC American Type Culture Collection, Manassas, Box 1549, Virginia 20108, USA
CBS Centralbureau voor Schimmelcultures, Oosterstraat 1, 3740 AG Baarn, The Netherlands
CFBP Collection Francaise de Bactéries Phytopathogens, , Unit de Pathologie Vegetale, Institut National de la Recherche Agronomique, 49071 Angers, France
DSMZ Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures; Inhoffenstr. 7b 38124 Braunschweig Germany.
HAMBI HAMBI Culture Collection, Department of Applied Chemistry and Microbiology, Box 56, 00014 University of Helsinki, Finland
ICMP International Collection of Micro-organisms from Plants, Landcare Research, Private Bag 92170, Auckland, New Zealand

Collection of the Laboratorium voor Microbiologie en Microbiele Genetica, Rijksuniversiteit, Ledeganckstraat 35, B-9000 Gent, Belgium

NCPPB National Collection of Plant Pathogenic Bacteria, Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, YO4 1LW, England
NRRL Agricultural Research Service Culture Collection, Peoria, Illinois, USA



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