Megasphaera

Not to be confused with Magosphaera.

Megasphaera is a genus of Bacillota bacteria classified within the class Negativicutes.^[1][2]

Megasphaera
Scientific classification
Domain:	Bacteria
Phylum:	Bacillota
Class:	Negativicutes
Order:	Veillonellales
Family:	Veillonellaceae
Genus:	Megasphaera Rogosa 1971
Type species
Megasphaera elsdenii (Gutierrez et al. 1959) Rogosa 1971[1]
Species
See text

This classification has been reexamined.^[3] It appears that this genus is a member of the Clostridia.

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)^[1] and National Center for Biotechnology Information (NCBI).^[2]

16S rRNA based LTP_10_2024[4][5][6]

120 marker proteins based GTDB 09-RS220[7][8][9]

Megasphaera M. micronuciformis Marchandin et al. 2003 Anaeroglobus geminatus Carlier et al. 2002 M. paucivorans Juvonen and Suihko 2006 M. sueciensis Juvonen and Suihko 2006 M. cerevisiae Engelmann and Weiss 1986 M. vaginalis Srinivasan et al. 2021 non Bordigoni et al. 2020 M. hutchinsoni Srinivasan et al. 2021 M. lornae Srinivasan et al. 2021 M. hexanoica Jeon et al. 2017 M. hominis Liu et al. 2022 M. butyrica Hitch et al. 2022 M. stantonii Maki & Looft 2018 M. massiliensis Padmanabhan et al. 2016 M. elsdenii (Gutierrez et al. 1959) Rogosa 1971 M. indica Lanjekar et al. 2014

Megasphaera_C Megasphaera hutchinsoni Megasphaera lornae "Caecibacter" "Megasphaera hominis" "C. massiliensis" Ricaboni et al. 2017 (incl. Megasphaera hexanoica) Megasphaera paucivorans Anaeroglobus Megasphaera vaginalis Bordigoni et al. 2020 non Srinivasan et al. 2021 "Colibacter massiliensis" Mailhe et al. 2017 "A. micronuciformis" A. geminatus Megasphaera M. cerevisiae M. stantonii M. massiliensis M. elsdenii

Unassigned species:

• "M. intestinihominis" Hitch et al. 2024

See also

• List of bacterial vaginosis microbiota
• List of bacterial orders
• List of bacteria genera