Name: Syntrophus aciditrophicus Jackson et al. 2015

Category: Species

Proposed as: sp. nov.

Etymology: a.ci.di.tro.phi.cus. L. neut. adj. acidum, an acid; from L. adj. acidus -a -um, sour; N.L. masc. adj. trophicus, nursing, tending or feeding; from Gr. masc. adj. trophikos, nursing; N.L. masc. adj. aciditrophicus, one that feed on acids, acid-feeding

Gender: masculine

Type strain: ATCC 700169; DSM 26646; JCM 18717; SB

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: GU993263 Analyse FASTA

Effective publication: Jackson BE, Bhupathiraju VK, Tanner RS, Woese CR, McInerney MJ. Syntrophus aciditrophicus sp. nov., a new anaerobic bacterium that degrades fatty acids and benzoate in syntrophic association with hydrogen-using microorganisms. Arch Microbiol 1999; 171:107-114.

IJSEM list: Oren A, Garrity GM. Validation list no. 163. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2015; 65:1105-1111.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 36 times in PubMed until 2024-03-27.
  • 🧍 The name was already published in the Validation List 51 (2001) of the Int J Syst Evol Microbiol, but at that time the strain was not deposited in two publicly accessible service collections in different countries as required by Rules 27(3) and 30 of the Code. Consequently the name was not validly published in 2001. Publication: Anonymous. Validation list no. 51. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1994; 44:852.
  • 🧍 According to Rules 27(3) and 30, Syntrophus aciditrophicus Jackson et al. 2001 is not validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries. According to the Judicial Opinion 81, authors or this name, or other scientists who wish to have this name validly published, should submit evidence of the deposit of the type strain in additional collections to the List Editor (either directly or via the IJSEM Editorial Office) before the next meeting of the Judicial Commission in Sapporo, Japan, in 2011. After that time, the name will be ruled not to have been validly published. If, after that deadline, the authors or other scientists wish to have this name validly published, this may be done by confirming that the name is in accordance with the requirements of the Code and either by requesting valid publication via the Validation Lists or by inclusion of the proposal in an original article in the IJSEM. The details of valid publication will then make reference to those publications. If authors or other scientists feel that an exception should be granted to Rule 30, requiring deposit of the type in two different collections in two different countries, they should contact the Editorial Office of the IJSEM. Publication: Euzeby JP, Tindall BJ. Status of strains that contravene Rules 27(3) and 30 of the Bacteriological Code. Request for an opinion. Int J Syst Evol Microbiol 2004; 54:293-301.
  • 🧍 This species name was previously validated as Syntrophus aciditrophicus Jackson et al. 2001, sp. nov. However, according to Rules 27(3) and 30, Syntrophus aciditrophicus Jackson et al. 2001 was not validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries. According to Judicial Opinion 81, authors of this name, or other scientists who wish to have this name validly published, should submit evidence of the deposit of the type strain in additional collections to the List Editor (either directly or via the IJSEM Editorial Office) before the next meeting of the Judicial Commission in Sapporo, Japan, in 2011. After that time, the name will be ruled not to have been validly published. If, after that deadline, the authors or other scientists wish to have this name validly published, this may be done by confirming that the name is in accordance with the requirements of the Code and either by requesting valid publication via the Validation Lists or by inclusion of the proposal in an original article in the IJSEM. The details of valid publication will then make reference to those publications. If authors or other scientists feel that an exception should be granted to Rule 30, requiring deposit of the type in two different collections in two different countries, they should contact the Editorial Office of the IJSEM. Publication: Judicial Commission. Judicial Opinion No. 81. Int J Syst Evol Microbiol 2008; 58:1755-1763.

Parent taxon: Syntrophus Mountfort et al. 1984

Assigned by: Jackson BE, Bhupathiraju VK, Tanner RS, Woese CR, McInerney MJ. Syntrophus aciditrophicus sp. nov., a new anaerobic bacterium that degrades fatty acids and benzoate in syntrophic association with hydrogen-using microorganisms. Arch Microbiol 1999; 171:107-114.

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Record number: 785043