“Allofontibacter lacus”

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Formal styling
“Allofontibacter lacus” corrig. Tsementzi et al., 2019
Effective publication
Tsementzi et al., 2019
Oren, Garrity, 2021 from “Candidatus Fonsibacter lacus” (sic)
SeqCode status
Automated discovery
Cannonical URL


L. gen. n. lacus, of a lake
Nomenclatural type
INSDC Nucleotide: RGRP00000000.1


We propose to name PEL1, the most complete and persistent genomospecies of clade IIIb in the freshwater ecosystems sample, as Allofontibacter lacus sp. nov. [formerly "Candidatus Fonsibacter lacus"]. In addition to the previously described properties of the genus Allonsibacter corrig. Henson, et al (2018), the proposed species is described as follows. Small, curved rod cells of approximately 1 × 0.2 μm. Partial genome sequence WB8_6_001 with estimated completeness of 77.5% and contamination of 0.9% is 1.08 Mbp in size, with 1375 predicted genes, a coding density of 92.0%, and a G + C content of 35.9%. WB8_6_001 has an ANI of 84.9% and AAI of 87.0% with the Allofontibacter communis corrig. Henson et al (2018) [formerly "Ca. Fonsibacter ubiquis"] str. LSUCC0530T genome, the only currently described member of the Allofontibacter genus. The type material for this species is the genome WB8_6_001, identified in the freshwater lakes along the Chattahoochee River, Southeast USA. The representative genome is available in GenBank under accession number SAMN10223538.
Bacteria » Pseudomonadota » Alphaproteobacteria » Candidatus Pelagibacterales » Candidatus Pelagibacteraceae » Candidatus Allofontibacter » “Allofontibacter lacus”
Candidatus Allofontibacter gtdb


INSDC Nucleotide:RGRP00000000.1
Metagenome-Assembled Genome (MAG)
Estimated Quality Metrics
  • Completeness: 81.1%
  • Contamination: 0.9%
  • Quality: 76.6
Ribosomal and transfer RNA genes
  • 1 16S rRNA (up to 100.0%)
  • 2 23S rRNAs (up to 100.0%)
  • tRNAs for 9 amino acids
Other features
  • G+C Content: 35.94%
  • Coding Density: 92.02%
  • Codon Table: 11
  • N50: 7,201 bp
  • Contigs: 225
  • Largest Contig: 52,290 bp
  • Assembly Length: 1,080,034 bp
  • Ambiguous Assembly Fraction: 0.0%
Automated checks
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Local history
Registered by
Excubia bot almost 5 years ago


Citation Title
Oren, Garrity, 2021, International Journal of Systematic and Evolutionary Microbiology Candidatus List No. 2. Lists of names of prokaryotic Candidatus taxa
Tsementzi et al., 2019, Systematic and Applied Microbiology Ecogenomic characterization of widespread, closely-related SAR11 clades of the freshwater genus “Candidatus Fonsibacter” and proposal of Ca. Fonsibacter lacus sp. nov
Effective publication

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