Kryptonia
| Kryptonia | |
|---|---|
| Scientific classification | |
| Domain: | |
| Superphylum: | |
| Phylum: | Kryptonia Castelle et al. 2013
|
| Class: | "Kryptonia"
|
| Order: | "Kryptoniales"
|
| Family: | "Kryptoniaceae"
|
| Genera | |
| |
Kryptonia is a bacterial phylum with candidate status. It is a member of the FCB group.[1]
The phylum was first proposed in 2016 following the recovery of genomes from a large-scale effort to mine metagenomic and single-cell genomic datasets for novel bacterial diversity.[1] Extensive analysis of 5.2 Tb of metagenomic data from around the world suggests members of Kryptonia are found exclusively in high-temperature pH-neutral geothermal springs, such as the Jinze pool (Yunnan Province, China), Dewar Creek Spring (British Columbia, Canada), and Great Boiling Spring (Nevada, USA).[1] Due to primer mismatches, members of this phylum have been widely under-detected in 16S rRNA sequencing-based surveys of community composition.
Analysis of the first genomes recovered from this group (from four different genera) suggests that members of Kryptonia are heterotrophs with a putative capacity for iron respiration.[1] They are inferred to be incapable of some producing key metabolic compounds on their own (e.g.: biotin (also known as vitamin B7 or vitamin H) and certain amino acids), and thus may be metabolically dependent on other microbes in their environment, although the nature of such a relationship is unknown.[1]
The name "Kryptonia" is derived from the Greek work "krupton", which means "hidden" or "secret". This is a nod to the phylum having hitherto eluded detection due to SSU rRNA primer biases.
Taxonomy[edit]
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[2] and National Center for Biotechnology Information (NCBI).[3]
| Phylogeny of "Kryptonia"[4][5][6] | |||||||||||||||||||||
|
- Class "Kryptonia"
- Order "Kryptoniales"
- Family "Kryptoniaceae"
- Genus "Ca. Chrysopegocella" Eloe-Fadrosh et al. 2016 corrig. Oren et al. 2020 ["Ca. Chrysopegis" (sic)]
- "Ca. Chrysopegocella kryptomonas" Eloe-Fadrosh et al. 2016 corrig. Oren et al. 2020
- Genus "Ca. Kryptobacter" Eloe-Fadrosh et al. 2016
- "Ca. Kryptobacter tengchongensis" Eloe-Fadrosh et al. 2016
- Genus "Ca. Kryptonium" Eloe-Fadrosh et al. 2016
- "Ca. Kryptonium thompsoni" Eloe-Fadrosh et al. 2016
- Genus "Ca. Thermokryptus" Eloe-Fadrosh et al. 2016
- "Ca. Thermokryptus mobilis" Eloe-Fadrosh et al. 2016
- Genus "Ca. Chrysopegocella" Eloe-Fadrosh et al. 2016 corrig. Oren et al. 2020 ["Ca. Chrysopegis" (sic)]
- Family "Kryptoniaceae"
- Order "Kryptoniales"
See also[edit]
References[edit]
- ^ a b c d e Eloe-Fadrosh, Emiley A.; Paez-Espino, David; Jarett, Jessica; Dunfield, Peter F.; Hedlund, Brian P.; Dekas, Anne E.; Grasby, Stephen E.; Brady, Allyson L.; Dong, Hailiang; Briggs, Brandon R.; Li, Wen-Jun (2016-01-27). "Global metagenomic survey reveals a new bacterial candidate phylum in geothermal springs". Nature Communications. 7 (1): 10476. Bibcode:2016NatCo...710476E. doi:10.1038/ncomms10476. ISSN 2041-1723. PMC 4737851. PMID 26814032.
- ^ Euzéby JP, Parte AC. "Kryptonia". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved June 7, 2021.
- ^ Sayers; et al. "Kryptonia". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2021-03-20.
- ^ "GTDB release 07-RS207". Genome Taxonomy Database. Retrieved 20 June 2022.
- ^ "ar53_r207.sp_label". Genome Taxonomy Database. Retrieved 20 June 2022.
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 20 June 2022.
