Sphaerotilaceae
| Sphaerotilaceae | |
|---|---|
Scientific classification  | |
| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Phylum: | Pseudomonadota |
| Class: | Betaproteobacteria |
| Order: | Burkholderiales |
| Family: | Sphaerotilaceae Liu et al. 2023[1] |
| Type genus | |
| Sphaerotilus Kützing 1833 (Approved Lists 1980) | |
| Genera | |
|
See text | |
Sphaerotilaceae is a family of bacteria in the order Burkholderiales. Genome-based classification places the family as a monophyletic lineage closely related to, but distinct from, the family Comamonadaceae.[2] The type genus is Sphaerotilus.[1]
Some members of the family have distinctive morphologies or metabolic capabilities. Species assigned to Sphaerotilus and Leptothrix have historically been studied as sheathed, filamentous bacteria.[3] Pseudideonella sakaiensis, formerly classified as Ideonella sakaiensis, can degrade and assimilate polyethylene terephthalate (PET).[4][5]
Taxonomy
[edit]The family was established following analyses of 16S rRNA gene and genome sequences. These analyses recovered the group as a coherent lineage sister to Comamonadaceae. Genome-relatedness indices, including digital DNA–DNA hybridization and average nucleotide identity, together with phenotypic comparisons, were used to resolve relationships within the family.[2]
The family name is formed from the name of its type genus, Sphaerotilus, and the family suffix -aceae.[1]
Genera
[edit]As of August 2026, LPSN recognizes the following 17 genera with validly published and correct names in Sphaerotilaceae:[1]
The validly published genera Calidifontimicrobium, Kinneretia, Paucibacter, Pelomonas, Pseudaquabacterium, and Pseudorivibacter are treated by LPSN as taxonomic synonyms and are therefore excluded from the list of accepted genera.[1]
Phylogeny
[edit]Nomenclature follows the List of Prokaryotic names with Standing in Nomenclature (LPSN).[1]
The tree below shows a reduced genome-based phylogeny from GTDB release R11-RS232. It includes one named representative for each LPSN-recognized genus identifiable in the release. Unnamed species clusters and accession-based placeholder genera are excluded.
GTDB assigns the represented genomes to the family Burkholderiaceae_C rather than to a family named Sphaerotilaceae. The tree therefore shows the GTDB relationships among selected genera recognized by LPSN as members of Sphaerotilaceae.[6]
The tree displays genus names, with one named species cluster used to represent each genus. Other genera occurring between the displayed branches in the complete GTDB tree are omitted. † GTDB classifies the representative of Pseudideonella as Ideonella_A sakaiensis.[6] No representative is shown for Leptothrixas GTDB R11-RS232 assigns members of this genus to Sphaerotilus.[6]
References
[edit]- 1 2 3 4 5 6 "Family: Sphaerotilaceae". List of Prokaryotic names with Standing in Nomenclature. Leibniz Institute DSMZ. Retrieved 13 August 2026.
- 1 2 Liu, Yang; Du, Juan; Pei, Tao; Du, Hanqin; Feng, Guang-Da; Zhu, Honghui (2022). "Genome-based taxonomic classification of the closest-to-Comamonadaceae group supports a new family Sphaerotilaceae fam. nov. and taxonomic revisions". Systematic and Applied Microbiology. 45 (6) 126352. doi:10.1016/j.syapm.2022.126352. PMID 36063784.
- ↑ van Veen, W. L.; Mulder, E. G.; Deinema, M. H. (1978). "The Sphaerotilus-Leptothrix group of bacteria". Microbiological Reviews. 42 (2): 329–356. doi:10.1128/mr.42.2.329-356.1978. PMC 281433. PMID 353479.
- ↑ Yoshida, Shosuke; Hiraga, Kazumi; Takehana, Toshihiko; Taniguchi, Ikuo; Yamaji, Hironao; Maeda, Yasuhito; Toyohara, Kiyotsuna; Miyamoto, Kenji; Kimura, Yoshiharu; Oda, Kohei (2016). "A bacterium that degrades and assimilates poly(ethylene terephthalate)". Science. 351 (6278): 1196–1199. doi:10.1126/science.aad6359. PMID 26965627.
- ↑ Lu, H.; Chen, L. (2026). "Emended description of the genus Rhizobacter and reclassification of Ideonella sakaiensis as Pseudideonella sakaiensis gen. nov., comb. nov". International Journal of Systematic and Evolutionary Microbiology. 76 (6) 007181. doi:10.1099/ijsem.0.007181. PMID 42234469.
- 1 2 3 "Bacterial taxonomy for GTDB release R11-RS232" (TSV). Genome Taxonomy Database. Retrieved 13 August 2026.
- ↑ "GTDB release R11-RS232". Genome Taxonomy Database. Retrieved 13 August 2026.
- ↑ "bac120_r232.sp_labels.tree". Genome Taxonomy Database. Retrieved 13 August 2026.