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Genus Methanosaeta

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: 4
Number of subspecies cited in this file: 0

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


For a detailed description of this taxon see Bergey’s Manual of Systematics of Archaea and Bacteria (BMSAB).


 

Methanosaeta Patel and Sprott 1990, gen. nov. (Type genus of the family ¤ Methanosaetaceae Boone et al. 2002). (Illegitimate name).
Type species: ¤ Methanosaeta concilii (Patel 1985) Patel and Sprott 1990.
Etymology: N.L. n. methanum [from French n. méth(yle) and chemical suffix -ane], methane; N.L. pref. methano-, pertaining to methane; L. fem. n. saeta, bristle; N.L. fem. n. Methanosaeta, methane (-producing) bristle.
Valid publication: PATEL (G.B.) and SPROTT (G.D.): Methanosaeta concilii gen. nov., sp. nov. ("Methanothrix concilii") and Methanosaeta thermoacetophila nom. rev., comb. nov. Int. J. Syst. Bacteriol., 1990, 40, 79-82.
Original article in IJSEM Online

Note: According to the Judicial Commission, the name Methanosaeta is illegitimate and should be rejected as a source of confusion. It should be replaced with the genus name Methanothrix. The replacement name will be nom. nov. (sic) and all species in the genus Methanosaeta should be transferred to the genus Methanothrix.
Reference: GARRITY (G.M.), LABEDA (D.P.) and OREN (A.): Judicial Commission of the International Committee on Systematics of Prokaryotes. XIIth International (IUMS) Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 3, 4 and 6 August 2008, Istanbul, Turkey. Int. J. Syst. Evol. Microbiol., 2011, 61, 2775-2780.
Original article in IJSEM Online

Note: See also the file Some problems with the genera Methanothrix and Methanosaeta.

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Methanosaeta concilii (Patel 1985) Patel and Sprott 1990, comb. nov. (Type species of the genus.) (Illegitimate name).
Type strain: (see also StrainInfo.net) GP6 = ATCC 35969= DSM 3671 = JCM 10134 = NRC 2989 = OCM 69 (OGC 69).
Sequence accession no. (16S rRNA gene) for the type strain: S42679 (segment 1 of 3, 159 bp), S42680 (segment 2 of 3, 194 bp), S42681 (segment 3 of 3, 186 bp).
Basonym: ¤ Methanothrix concilii Patel 1985.
Etymology: L. gen. n. concilii, of a council, named after the National Research Council of Canada, in whose laboratories the type strain was isolated.
Valid publication: PATEL (G.B.) and SPROTT (G.D.): Methanosaeta concilii gen. nov., sp. nov. ("Methanothrix concilii") and Methanosaeta thermoacetophila nom. rev., comb. nov. Int. J. Syst. Bacteriol., 1990, 40, 79-82.
Original article in IJSEM Online

Note: Methanosaeta concilii (Patel 1985) Patel and Sprott 1990 is illegitimate, because the genus name is illegitimate.

Note: See also the file Some problems with the genera Methanothrix and Methanosaeta.

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Methanosaeta harundinacea Ma et al. 2006, sp. nov. (Illegitimate name).
Type strain: (see also StrainInfo.net) 8Ac = CGMCC 1.5026 = JCM 13211.
Sequence accession no. (16S rRNA gene) for the type strain: AY817738.
Etymology: L. fem. adj. harundinacea, like a reed, referring to the cell shape of a reed stem.
Valid publication: MA (K.), LIU (X.) and DONG (X.): Methanosaeta harundinacea sp. nov., a novel acetate-scavenging methanogen isolated from a UASB reactor. Int. J. Syst. Evol. Microbiol., 2006, 56, 127-131.
Original article in IJSEM Online

Note: Methanosaeta harundinacea Ma et al. 2006 is illegitimate, because the genus name is illegitimate. According to the Judicial Commission, all species in the genus Methanosaeta should be transferred to the genus Methanothrix. However, no formal decision was taken to propose a new combination.

Note: See also the file Some problems with the genera Methanothrix and Methanosaeta.

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Methanosaeta thermophila (Kamagata et al. 1992) Boone and Kamagata 1998, comb. nov. (Illegitimate name).
Type strain: (see also StrainInfo.net) PT = DSM 6194 = JCM 14653 = NBRC 101360.
Sequence accession no. (16S rRNA gene) for the type strain: AB071701.
Basonym: ¤ Methanothrix thermophila Kamagata et al. 1992.
Etymology: Gr. fem. n. thermê, heat; N.L. fem. adj. phila (from Gr. fem. adj. philê), friend, loving; N.L. fem. adj. thermophila, heat-loving.
References:
1 BOONE (D.R.) and KAMAGATA (Y.): Rejection of the species Methanothrix soehngeniiVP and the genus MethanothrixVP as nomina confusa, and transfer of Methanothrix thermophilaVP to the genus MethanosaetaVP as Methanosaeta thermophila comb. nov. Request for an Opinion. Int. J. Syst. Bacteriol., 1998, 48, 1079-1080.
Original article in IJSEM Online
2 JUDICIAL COMMISSION OF THE INTERNATIONAL COMMITTEE ON SYSTEMATICS OF PROKARYOTES: Rejection of the genus name Methanothrix with the species Methanothrix soehngenii Huser et al. 1983 and transfer of Methanothrix thermophila Kamagata et al. 1992 to the genus Methanosaeta as Methanosaeta thermophila comb. nov. Opinion 75. Int. J. Syst. Evol. Microbiol., 2008, 58, 1753-1754.
Opinion 75 in IJSEM Online

Note:   Methanosaeta thermophila (Kamagata et al. 1992) Boone and Kamagata 1998 is illegitimate, because the genus name is illegitimate.

Note: See also the file Some problems with the genera Methanothrix and Methanosaeta.

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Methanosaeta thermoacetophila (Nozhevnikova and Chudina 1988) Patel and Sprott 1990, comb. nov. (Illegitimate name).
Type strain: (see also StrainInfo.net) Z-517 (pure culture not available; monoculture deposited in the culture collection of the Department of Lithotrophic Microorganisms of the Institute of Microbiology, Academy of Sciences of the URSS) = DSM 4774 = VKM B-1831.
Sequence accession no. (16S rRNA gene) for the type strain: not found.
Basonym: ¤ Methanothrix thermoacetophila corrig. Nozhevnikova and Chudina 1988.
Etymology: Gr. fem. n. thermê, heat; L. n. acetum, vinegar; N.L. fem. adj. phila (from Gr. fem. adj. philê), friend, loving; N.L. fem. adj. thermacetophila, heat- and acetate-loving.
Valid publication: PATEL (G.B.) and SPROTT (G.D.): Methanosaeta concilii gen. nov., sp. nov. ("Methanothrix concilii") and Methanosaeta thermoacetophila nom. rev., comb. nov. Int. J. Syst. Bacteriol., 1990, 40, 79-82.
Original article in IJSEM Online

Note: In violation of Rule 33c, Patel and Sprott 1990 propose Methanosaeta thermoacetophila as a nomen revictum.

Note:   Methanosaeta thermoacetophila (Nozhevnikova and Chudina 1988) Patel and Sprott 19908 is illegitimate, because the genus name is illegitimate.

Note: See also the file Some problems with the genera Methanothrix and Methanosaeta.

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