Newly recognized bacterial species named in honor of UofL School of Dentistry professor Dr. Richard J. Lamont

Researchers at Virginia Commonwealth University have identified and named a newly recognized bacterial species, Selenomonas lamontii, in honor of UofL School of Dentistry professor Dr. Richard J. Lamont. Lamont, a distinguished oral microbiologist, serves as the Delta Dental Endowed Professor and Chair in ULSD's Department of Oral Immunology & Infectious Diseases.

The discovery and naming of the bacterial species is documented in the journal article Genomic and phenotypic insights into the novel species Selenomonas lamontii type strain ATCC 33150, currently described as Selenomonas sputigena. Investigators found the strain is genetically distinct enough from Selenomonas sputigena to warrant classification as a separate species, leading to its renaming.

Selenomonas species are commonly found in the human oral cavity and are associated with both health and disease. The newly identified S. lamontii, a consistent component of the oral microbiome, has been observed at higher levels in individuals with periodontitis, suggesting a potential role in gum disease.

Beyond its taxonomic significance, the discovery provides new insight into how oral bacteria behave and interact. Compared to related species, S. lamontii demonstrates distinct biological traits, including slower growth, increased motility, and reduced biofilm formation under laboratory conditions.

By naming the bacterium after Dr. Lamont, researchers recognized his influential contributions to the field of oral microbiology. The designation underscores the impact of his work while advancing scientific understanding of the complex microbial communities that influence oral health.