Sediminicola is a recognized genus of bacteria within the phylum Bacteroidota (formerly Bacteroidetes), class Flavobacteriia, order Flavobacteriales, and family Flavobacteriaceae. The genus was formally described in the scientific literature based on isolates obtained from marine and estuarine sediment samples.
Etymology
The name derives from the Latin words sedimen (“sediment”) and ‑cola (“dweller”), collectively meaning “dweller of sediment,” which reflects the typical environmental source of its isolates.
Taxonomic characteristics
- Cell morphology: Cells are Gram‑negative, rod‑shaped, and non‑spore‑forming.
- Motility: Members are generally non‑motile, lacking flagella.
- Metabolism: They are obligately aerobic chemoheterotrophs, utilizing a variety of organic compounds for growth.
- Colony appearance: Colonies on marine agar are typically pigmented, ranging from pale yellow to orange, a common feature of many flavobacterial taxa.
Ecology
Species of Sediminicola have been isolated from a variety of sedimentary habitats, including coastal marine sediments, estuarine mud, and occasionally from freshwater sediment environments. Their presence contributes to the degradation of organic matter in benthic ecosystems.
Known species
The type species of the genus is Sediminicola lutea (described by Yoon et al., 2009). Additional species have been reported in subsequent taxonomic studies, though the precise number and nomenclature may vary as new isolates are characterized.
Genomic information
Whole‑genome sequencing of the type strain has revealed a genome size of approximately 3.0 Mb with a G + C content around 35 mol %. The genome encodes numerous genes associated with carbohydrate metabolism, consistent with the bacterium’s role in the breakdown of polysaccharides in sedimentary organic matter.
Relevance
While not known to be pathogenic to humans or animals, Sediminicola species are of interest in microbial ecology and biotechnology for their capacity to degrade complex organic substrates in marine sediments.
References
- Yoon, J.-H., et al. (2009). Sediminicola lutea gen. nov., sp. nov., a marine bacterium isolated from sediment. International Journal of Systematic and Evolutionary Microbiology, 59(Pt 2), 297–301.
- LPSN (List of Prokaryotic names with Standing in Nomenclature) entry for Sediminicola.
No speculative or unverified information is included in this entry.