SeqCode Registry
Register List https://seqco.de/r:3vlm6qqf [2025]

Regnicoccus frigidus sp. nov.

Submitted by Allen, Michelle

Species Regnicoccus frigidus

Etymology
[fri'gi.dus] L. masc. adj. frigidus, cold, referring to the cold environment
Nomenclatural type
INSDC Nucleotide: JAOANE000000000 Ts
Description
Cold-adapted planktonic cyanobacterium using aerobic oxygenic photoautotrophy (Calvin-Benson-Bassham cycle) in the light. Under dark conditions has possible aerobic heterotrophic metabolism (using exogenous sugars and glycerol); possible facultative anaerobic metabolism under dark and anoxic conditions (fermentation using stored glycogen coupled to evolution of H2). Carbon sources include: CO2, urea, cyanate, sugars, glycerol. Nitrogen sources include: nitrate, ammonia, urea, cyanate, amino acids, peptides, free cyanide, nitriles. Capable of glycogen storage. Possesses ABC transporters for urea, amino acids, and sugars, as well as other transporters for peptides, glycerol, nitrate/nitrite, and ammonium. Bacterial defense systems include a BREX type 1 system, a Retron anti-phage system and Type I restriction-modification.
Classification
Bacteria » Cyanobacteriota » Cyanophyceae » “Synechococcales” » Synechococcaceae » Regnicoccus » Regnicoccus frigidus
References
Effective publication: Panwar et al., 2022 [1]
Assigned taxonomically: Panwar et al., 2022 [1]

References

  1. Panwar et al. (2022). Population structure of an Antarctic aquatic cyanobacterium. Microbiome. DOI:10.1186/s40168-022-01404-x

Register List Certificate of Validation

On behalf of the Committee on the Systematics of Prokaryotes Described from Sequence Data (SeqCode Committee), we hereby certify that the Register List seqco.de/r:3vlm6qqf submitted by Allen, Michelle and including 1 new name has been successfully validated.


Date of Priority: 2025-08-17 11:27 UTC
DOI: 10.57973/seqcode.r:3vlm6qqf