Genus Megasphaera

Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow () only indicates the sequence of valid publication of names and does not mean that the last name in the sequence must be used (see: Introduction).

Number of species cited in this file: 5
Number of subspecies cited in this file: 0

Classification (Warning: see also the file "Classification of prokaryotes: Introduction").

 

Megasphaera Rogosa 1971, genus.
Type species: ¤ Megasphaera elsdenii (Gutierrez et al. 1959) Rogosa 1971 (Approved Lists 1980).
Etymology: Gr. adj. megâs, big; L. fem. n. sphaera, a sphere; N.L. fem. n. Megasphaera, big sphere.
References: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition). [ROGOSA (M.): Transfer of Peptostreptococcus elsdenii Gutierrez et al. to a new genus, Megasphaera [M. elsdenii (Gutierrez et al. comb. nov.]. International Journal of Systematic Bacteriology, 1971, 21, 187-189.]

Megasphaera Rogosa 1971 (Approved Lists 1980) emend. Marchandin et al. 2003.
Type species: ¤ Megasphaera elsdenii (Gutierrez et al. 1959) Rogosa 1971 (Approved Lists 1980).
Etymology: Gr. adj. megâs, big; L. fem. n. sphaera, a sphere; N.L. fem. n. Megasphaera, big sphere.
Reference: MARCHANDIN (H.), JUMAS-BILAK (E.), GAY (B.), TEYSSIER (C.), JEAN-PIERRE (H.), SIMÉON DE BUOCHBERG (M.), CARRIÈRE (C.) and CARLIER (J.P.): Phylogenetic analysis of some Sporomusa sub-branch members isolated from human clinical specimens: description of Megasphaera micronuciformis sp. nov. Int. J. Syst. Evol. Microbiol., 2003, 53, 547-553.
Original article in IJSEM Online

Note: In the Tables of Contents (IJSEM, 2003, 53, part 2, page I) and in the file "Author Index" (IJSEM, 2003, 53, part 2, page V), the author's name M. Siméon de Buochberg is erroneously cited as M.S. de Buochberg.

   image

Megasphaera cerevisiae Engelmann and Weiss 1986, sp. nov.
Type strain: (see also StrainInfo.net) strain PAT 1 = ATCC 43254 = DSM 20462 = JCM 6130.
Sequence accession no. (16S rRNA gene) for the type strain: L37040.
Etymology: L. n. cerevisia, beer; L. gen. n. cerevisiae, of beer.
References: VALIDATION LIST no. 20. Int. J. Syst. Bacteriol., 1986, 36, 354-356. [ENGELMANN (U.) and WEISS (N.): Megasphaera cerevisiae sp. nov.: a new gram-negative obligately anaerobic coccus isolated from spoiled beer. Syst. Appl. Microbiol., 1985, 6, 287-290.]
Validation List no. 20 in IJSEM Online - Effective publication Online

   image

Megasphaera elsdenii (Gutierrez et al. 1959) Rogosa 1971, species. (Type species of the genus.)
Type strain: (see also StrainInfo.net) strain ATCC 25940 = CCUG 6199 = CIP 106852 = DSM 20460 = JCM 1772.
Sequence accession no. (16S rRNA gene) for the type strain: U95027.
Synonyms: "Organism LC" Elsden and Lewis 1953, "rumen orgnism LC" Elsden et al. 1956, "Peptostreptococcus elsdenii" Gutierrez et al. 1959.
Etymology: N.L. gen. n. elsdenii, of Elsden; named after S.R. Elsden who first isolated the organism.
References: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition). [1 GUTIERREZ (J.), DAVIS (R.E.), LINDAHL (I.L.) and WARWICK (E.J.): Bacterial changes in the rumen during the onset of feed-lot bloat of cattle and characteristics of Peptostreptococcus elsdenii n. sp. Applied Microbiology, 1959, 7, 16-22. 2 ROGOSA (M.): Transfer of Peptostreptococcus elsdenii Gutierrez et al. to a new genus, Megasphaera [M. elsdenii (Gutierrez et al. comb. nov.]. International Journal of Systematic Bacteriology, 1971, 21, 187-189.]

   image

Megasphaera micronuciformis Marchandin et al. 2003, sp. nov.
Type strain: (see also StrainInfo.net) strain AIP 412.00 = CCUG 45952 = CIP 107280.
Sequence accession no. (16S rRNA gene) for the type strain: AF473834.
Etymology: Gr. adj. micros, small; L. gen. n. nucis, of a nut; L. suff. formis (from L. n. forma, figure, shape, appearance), -like, in the shape of; N.L. fem. adj. micronuciformis, small walnut-shaped, referring to the morphology of bacterial cells and cell surface.
Reference: MARCHANDIN (H.), JUMAS-BILAK (E.), GAY (B.), TEYSSIER (C.), JEAN-PIERRE (H.), SIMÉON DE BUOCHBERG (M.), CARRIÈRE (C.) and CARLIER (J.P.): Phylogenetic analysis of some Sporomusa sub-branch members isolated from human clinical specimens: description of Megasphaera micronuciformis sp. nov. Int. J. Syst. Evol. Microbiol., 2003, 53, 547-553.
Original article in IJSEM Online

Notes:
1 In the Tables of Contents (IJSEM, 2003, 53, part 2, page I) and in the file "Author Index" (IJSEM, 2003, 53, part 2, page V), the author's name M. Siméon de Buochberg is erroneously cited as M.S. de Buochberg.
2 The correct etymology of the specific epithet should be Gr. adj. micros, small; L. fem. gen. n. nucis (not nuci as cited in the paper by Marchandin et al. 2003), a nut; L. adj. suffix -formis -is -e (from L. n. forma, figure, shape, appearance), -like, in the shape of; N.L. fem. adj. micronuciformis, small walnut-shaped.

   image

Megasphaera paucivorans Juvonen and Suihko 2006, sp. nov.
Type strain: (see also StrainInfo.net) strain DSM 16981 = VTT E-032341.
Sequence accession no. (16S rRNA gene) for the type strain: DQ223730.
Etymology: L. adj. paucus, few, little; L. part. adj. vorans, devouring; N.L. part. adj. paucivorans, devouring few substrates.
Reference: JUVONEN (R.) and SUIHKO (M.L.): Megasphaera paucivorans sp. nov., Megasphaera sueciensis sp. nov. and Pectinatus haikarae sp. nov., isolated from brewery samples, and emended description of the genus Pectinatus. Int. J. Syst. Evol. Microbiol., 2006, 56, 695-702.
Original article in IJSEM Online

   image

Megasphaera sueciensis Juvonen and Suihko 2006, sp. nov.
Type strain: (see also StrainInfo.net) strain DSM 17042 = VTT E-97791.
Sequence accession no. (16S rRNA gene) for the type strain: DQ223729.
Etymology: N.L. fem. adj. sueciensis, pertaining to Sweden.
Reference: JUVONEN (R.) and SUIHKO (M.L.): Megasphaera paucivorans sp. nov., Megasphaera sueciensis sp. nov. and Pectinatus haikarae sp. nov., isolated from brewery samples, and emended description of the genus Pectinatus. Int. J. Syst. Evol. Microbiol., 2006, 56, 695-702.
Original article in IJSEM Online

   image