Pseudopropionibacterium rubrum sp. nov., a novel red‐pigmented species isolated from human gingival sulcus

Abstract

In this study, sStrain SK-1 , a novel gram-positive, pleomorphic, rod-shaped, non-spore forming, non-motile organism, designated SK-1 , was isolated from human gingival sulcus and found to produce acetic acid, propionic acid, lactic acid, and succinic acid as end products of glucose fermentation. Strain SK-1 is most closely related to Pseudopropionibacterium (Propionibacterium) propionicum with sequence homologies of the 16S rRNA and RNA polymerase β subunit (rpoB) genes of 96.6% and 93.1%, respectively. The genomic DNA G + C content of the isolate was 61.8 mol%. On the basis of the sequence data of the 16S rRNA and housekeeping (rpoB) genes, a novel taxon is here proposed, Pseudopropionibacterium rubrum sp. nov. (type strain SK-1 = JCM 31317 = DSM 100122 ). The 16S rRNA and rpoB gene sequences of strain SK-1 have been deposited in the DDBJ under the accession numbers LC002971 and LC102236, respectively.

Oral microbial profiles of extrinsic black tooth stain in primary dentition: A literature review

“… 53 , 54 Interestingly, these 3 bacterial strains were of dark orange, red, or brown colonies in specific media, which relate to the EBS formation. 54 , 55 , 56 …”

Complete Genome Sequence of Arachnia rubra Strain DSM 100122 T , a Cultured Member of the Human Oral Microbiome

“…The name Pseudopropionibacterium was taxonomically corrected to Arachnia because it was a homotypic synonym ( 2 ). Arachnia propionica ( 3 ) and Arachnia rubra ( 4 ) are the only two recognized species in the genus Arachnia , and both are members of the human oral microbiome ( 5 ). A 16S rRNA neighbor-joining tree for oral species within the family Propionibacteriaceae with current taxonomy is shown in Fig.…”

Red-Brown Pigmentation of Acidipropionibacterium jensenii Is Tied to Haemolytic Activity and cyl-Like Gene Cluster

“…Since a similar pigmentation related to haemolysis was observed for A. jensenii and A. thoenii [20], red pigmentation in propionibacteria could be considered a potential indicator of haemolytic activity in these bacteria. However, in the new propionibacteria species Pseudopropionibacterium rubrum SK-1 T isolated from the human mouth (specifically from gingival sulcus) [29,30] red pigmentation was reported, while no haemolysis on sheep-blood agar was observed. Also, β-haemolysis was recently added to the subspecies description of Cutibacterium acnes subsp.…”