Thermoplasmatales

Thermoplasmatales is an order of archaeans in the class Thermoplasmata.^[1] All are acidophiles, growing optimally at pH below 2. Picrophilus is currently the most acidophilic of all known organisms, being capable of growing at a pH of -0.06.^[2] Many of these organisms do not contain a cell wall, although this is not true in the case of Picrophilus. Most members of the Thermotoplasmata are thermophilic.

Thermoplasmatales
Cuniculiplasma divulgatum
Scientific classification
Domain:	Archaea
Kingdom:	Methanobacteriati
Phylum:	Thermoplasmatota
Class:	Thermoplasmata
Order:	Thermoplasmatales Reysenbach, 2002
Families
Cuniculiplasmataceae Ferroplasmataceae Picrophilaceae Thermoplasmataceae
Synonyms
Picrophilales Cavalier-Smith 2002

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)^[3] and National Center for Biotechnology Information (NCBI).^[1]

16S rRNA based LTP_06_2022[4][5][6]	53 marker proteins based GTDB 09-RS220[7][8][9]
Thermoplasmatales Thermoplasmataceae Thermoplasma Thermogymnomonas Cuniculiplasmataceae Cuniculiplasma Picrophilaceae Picrophilus Ferroplasmataceae Acidiplasma Ferroplasma	Thermoplasmataceae Thermoplasma Cuniculiplasma Thermogymnomonas Picrophilus Acidiplasma Ferroplasma

See also

• List of Archaea genera