The Selenomonadales are the only order of bacteria within the class Negativicutes; unlike most other members of Firmicutes, they are Gram-negative. The phylogeny of this order was determined by 16S rRNA comparisons.[1] Samples of bacterial strains within this order have been isolated from the root canals of healthy human teeth. [2]
References
^Marchandin, H.; Teyssier, C., Campos, J., Jean-Pierre, H., Roger, F., Gay, B., Carlier, J.-P., Jumas-Bilak, E. (10 August 2009). "Negativicoccus succinicivorans gen. nov., sp. nov., isolated from human clinical samples, emended description of the family Veillonellaceae and description of Negativicutes classis nov., Selenomonadales ord. nov. and Acidaminococcaceae fam. nov. in the bacterial phylum Firmicutes". International Journal of Systematic and Evolutionary Microbiology60 (6): 1271–1279. doi:10.1099/ijs.0.013102-0. PMID19667386.Cite uses deprecated parameter |coauthors= (help)
^Ribeiro, Adriana C.; Matarazzo, Flávia, Faveri, Marcelo, Zezell, Denise M., Mayer, Marcia P.A. (21 June 2011). "Exploring Bacterial Diversity of Endodontic Microbiota by Cloning and Sequencing 16S rRNA". Journal of Endodontics37 (7): 922–926. doi:10.1016/j.joen.2011.04.007.Cite uses deprecated parameter |coauthors= (help)