Kryptonia

Phylum of bacteria

Kryptonia

Scientific classification
Domain:  |

Bacteria

Superphylum:  |

FCB group

Phylum:  |

Kryptonia

Castelle et al. 2013

Class:  |

"Kryptonia"

Order:  |

"Kryptoniales"

Family:  |

"Kryptoniaceae"

Genera

* "Ca. Chrysopegocella"
* "Ca. Kryptobacter"
* "Ca. Kryptonium"
* "Ca. Thermokryptus"

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-netural 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, 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]

| "Ca. Kryptonium"  |  |  |

"Ca. K. mobilis"

|

|  |  |

"Ca. K. kryptomonas"

|

|  |  |

"Ca. K. tengchongensis"

|

"Ca. K. thompsoni"

* 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

## See also[edit]

* List of bacteria genera
* List of bacterial orders

## References[edit]

1. ^ 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.
2. ^ Euzéby JP, Parte AC. "Kryptonia". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved June 7, 2021.
3. ^ Sayers; et al. "Kryptonia". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2021-03-20.
4. ^ "GTDB release 07-RS207". Genome Taxonomy Database. Retrieved 20 June 2022.
5. ^ "ar53_r207.sp_label". Genome Taxonomy Database. Retrieved 20 June 2022.
6. ^ "Taxon History". Genome Taxonomy Database. Retrieved 20 June 2022.

Wikispecies has information related to Kryptonia.

Taxon identifiers|

* Wikidata: Q27101797
* NCBI: 1855361

|

* v
* t
* e

Prokaryotes: Bacteria classification

Domain
Archaea
Bacteria
Eukaryota
(Major groups
Diaphoretickes

Plant
Stramenopiles
Alveolata
Rhizaria
Amorphea

Amoebozoa
Opisthokonta

Animal
Fungi)

Terrabacteria
BV1, BV3, BV5|

| Glidobacteria
BV1|

| Eobacteria|

| Deinococcota|

* Deinococcales
* Thermales

|

Chloroflexota|

* Anaerolineales
* Caldilineales
* Chloroflexales
* Dehalococcoidales
* Herpetosiphonales
* Ktedonobacterales
* Sphaerobacterales
* Thermogemmatisporales

Others|

* Cyanobacteria

No OM|

| Bacillota
BV3
Low GC|

| Bacilli|

* Bacillales
* Lactobacillales
* Erysipelotrichiales
* Mollicutes
* Mycoplasmatales
* Entomoplasmatales
* Anaeroplasmatales
* Acholeplasmatales
* Haloplasmatales

|

Clostridia|

* Clostridiales
* Halanaerobiales
* Natranaerobiales
* Negativicutes
* Selenomonadales
* Thermoanaerobacteriales

Thermolithobacteria|

Thermolithobacterales

Actinobacteria
BV5
High GC|

| Actinomycetia|

* Actinomycetales
* Bifidobacteriales

|

Acidimicrobiia|

Acidimicrobiales

Coriobacteriia|

Coriobacteriales

Nitriliruptoria|

* Euzebyales
* Nitriliruptorales

Rubrobacteria|

* Gaiellales
* Rubrobacterales
* Thermoleophilales
* Solirubrobacterales

CPR group|

* Elulota
* Gracilibacteria
* Wirthbacteria

Thermotogida|

* Thermotogota
* Caldisericum
* Coprothermobacterota
* Dictyoglomota
* Synergistota

Hydrobacteria
BV2, BV4|

| Fusobacterida|

| Fusobacteria|

Fusobacterium

|

Campylobacterota|

* Campylobacterales
* Nautiliaceae

Spirochaeto-
bacteriobiontes|

* Spirochaetota

Elusimicrobes|

* Atribacterota
* Elusimicrobiota

PVC group|

| Planctomycetota|

* Phycisphaerales
* Planctomycetales

|

Verrucomicrobia|

* Opitutae
* Opitutales
* Puniceicoccales
* Verrucomicrobiae

Chlamydiota|

* Chlamydiae

Others|

* Lentisphaerae
* Poribacteria

FCB group|

| Fibrobacterota|

* Chitinispirillum
* Chitinivibrio

|

Chlorobi|

* Chlorobiales
* Ignavibacteriales

Bacteroidota|

* Bacteroidales
* Cytophagales
* Flavobacteriales
* Sphingobacteriales

Others|

* Rhodothermaeota
* Gemmatimonadota

Proteobacteria|

| Proteobacteria
BV2|

| Alpha|

* Caulobacterales
* Emcibacterales
* Holosporales
* Hyphomicrobiales
* Iodidimonadales
* Kordiimonadales
* Magnetococcales
* Micropepsales
* "Parvularculales"
* "Pelagibacterales"
* Rhodobacterales
* Rhodospirillales
* Rhodothalassiales
* Rickettsiales
* Sneathiellales
* Sphingomonadales

|

Beta|

* Burkholderiales
* Hydrogenophilales
* Methylophilales
* Neisseriales
* Nitrosomonadales
* Procabacteriales
* Rhodocyclales

Gamma|

* Acidithiobacillales
* Aeromonadales
* Alteromonadales
* Cardiobacteriales
* Chromatiales
* Enterobacterales
* Legionellales
* Methylococcales
* Oceanospirillales
* Orbales
* Pasteurellales
* Pseudomonadales
* Salinisphaerales
* Thiotrichales
* Vibrionales
* Xanthomonadales

Delta|

* Bdellovibrionales
* Desulfarculales
* Desulfobacterales
* Desulfovibrionales
* Desulfurellales
* Desulfuromonadales
* Myxococcales
* Syntrophobacterales
* Syntrophorhabdales

Zeta|

* Mariprofundales

Others|

* Acidobacteria
* Acidobacteriales
* Holophagae
* Aquificota
* Chrysiogenetes
* Deferribacteraceae
* Dictyoglomota
* Nitrospirota
* Thermodesulfobacteriota

* Source: Bergey's Manual (2001–2012)
* Alternative views: Wikispecies

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