Summary auto-generated
This Request for an Opinion challenges the taxonomic validity of the genus Pelczaria and its type species Pelczaria aurantia. The authors demonstrate that the strain currently distributed as ATCC 49321T and DSM 12801T, designated as the type strain of Pelczaria aurantia, actually belongs to the species Kocuria rosea based on multiple lines of evidence. Their analysis reveals significant discrepancies between the original description by Poston (1993) and the currently available strain: DNA-DNA hybridization values differ substantially, 16S rDNA sequences are identical between the two species, cell wall and phospholipid compositions match Kocuria rosea rather than the original description, and G+C content aligns with Kocuria rosea. The authors conclude that the distributed strain does not conform to the original species description and therefore does not represent a true type strain for Pelczaria aurantia. They petition the Judicial Commission to recognize the distributed strain as Kocuria rosea and, if no suitable replacement type strain or neotype for Pelczaria aurantia can be found within two years, to place both the species name Pelczaria aurantia and genus name Pelczaria on the list of rejected names.
Key findings
- The type strain ATCC 49321T (DSM 12801T) currently distributed as Pelczaria aurantia is genetically and biochemically identical to Kocuria rosea, not the original Pelczaria aurantia strain.
- Multiple characteristics including 16S rDNA sequences, DNA-DNA hybridization values (87±1%), cell wall composition, phospholipid profiles, and G+C content (72 mol%) match Kocuria rosea but differ from Poston's original description.
- The original strain described by Poston (1993) is no longer available, leaving the species without a conforming type strain.
- The authors recommend the Judicial Commission recognize the distributed strain as Kocuria rosea and reject both the species name Pelczaria aurantia and genus name Pelczaria if no suitable replacement strain is found within two years.
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Abstract
Based upon the results of another publication [P. Schumann et al. (2000). Int J Syst Evol Microbiol 50, 1421--1424] it is concluded that the culture Pelczaria aurantia ATCC 49321(T) (= DSM 12801(T)) currently being distributed does not conform to the description of the type strain of Pelczaria aurantia (Poston 1994) and the type species of the genus Pelczaria (Poston 1994). It is proposed that the Judicial Commission consider (1) that the organism currently deposited as ATCC 49321(T) and DSM 12801(T) be recognized as a member of the species Kocuria rosea; (2) that the organism deposited as ATCC 49321(T) and DSM 12801(T) as the type strain of the species does not represent a strain of the species Pelczaria aurantia; (3) to place the name Pelczaria aurantia (Poston 1994) on the list of rejected names if a suitable replacement strain, or a neotype, cannot be found within 2 years of publication of this Request (Rule 18c); (4) to place the genus name Pelczaria (Poston 1994) on the list of rejected names [c.f. Recommendation 20d (3)] if a suitable replacement type strain or a neotype for the type species of the genus Pelczaria (Poston 1994) cannot be found as outlined in (3).