Serratia proteamaculans (Paine and Stansfield) comb. nov., a Senior Subjective Synonym of Serratia liquefaciens (Grimes and Hennerty) Bascomb et al.

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Abstract
In 1919, Paine and Stansfield attributed a leaf-spot disease of the tropical plant Protea cynaroides to Pseudomonas proteamaculans. This organism, placed at various times in the genera Xanthomonas, Erwinia and Enterobacter and now known as Erwinia proteamaculans (Paine and Stansfield 1919) Dye 1966, is listed in the first (1976) draft of the Approved List of Bacterial Names. On the basis of biochemical properties, polynucleotide sequence relatedness and pathobiological capacity, the identity of the only strain (ATCC 19323 = Dye ZL1 = ICPB XP176 = NCPPB 245; here designated as the type strain of P. proteamaculans) of E. proteamaculans still extant from the Paine and Stansfield study with S. liquefaciens biotype C1c is demonstrated. Based on the results of the study, the transfer of E. proteamaculans to the genus Serratia is recommended. S. proteamaculans (Paine and Stansfield 1919) comb. nov. is to be regarded as a senior subjective synonym of S. liquefaciens (Grimes and Hennerty 1931) Bascomb et al. 1971.