Kryptonia
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| Kryptonia | |
|---|---|
Scientific classification 
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| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Superphylum: | FCB |
| Phylum: | Kryptoniota corrig. Eloe-Fadrosh et al. 2016 |
| Class | |
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| Synonyms | |
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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] | |||||||||||||||||||||
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- Class "Kryptonia"
- Order "Kryptoniales"
- Family "Kryptoniaceae"
- Genus "Ca. Chrysopegocella" Eloe-Fadrosh et al. 2016 corrig. Oren et al. 2020 ["Ca. Chrysopegis" (sic)]
- "Ca. C. kryptomonas" Eloe-Fadrosh et al. 2016 corrig. Oren et al. 2020
- Genus "Ca. Kryptobacter" Eloe-Fadrosh et al. 2016
- "Ca. K. tengchongensis" Eloe-Fadrosh et al. 2016
- Genus "Ca. Kryptonium" Eloe-Fadrosh et al. 2016
- "Ca. K. mobile" Hedlund et al. 2022
- "Ca. K. thompsonii" corrig. Eloe-Fadrosh et al. 2016
- Genus "Ca. Thermokryptus" Eloe-Fadrosh et al. 2016
- "Ca. T. 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.
- ^ A.C. Parte; et al. "Kryptoniota". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2025-02-28.
- ^ C.L. Schoch; et al. "Kryptoniota". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2025-02-28.
- ^ "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.
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