Name: Ensifer xinjiangensis (Chen et al. 1988) Young 2003

Category: Species

Proposed as: comb. nov.

Basonym: Sinorhizobium xinjiangense corrig. Chen et al. 1988

Etymology: xin.jiang.en’sis. N.L. masc. adj. xinjiangensis, pertaining to the suburbs of Xinjiang, China

Pronunciation (Latin), gender: EN-si-fer xin-jian͡g-EN-sis, masculine

Type strain: ATCC 49357; CCBAU 110; DSM 5852; HAMBI 1673; ICMP 11141; JCM 21035; LMG 17930; NBRC 100018

16S rRNA gene: AF250354 Analyse FASTA

Valid publication: Young JM. The genus name Ensifer Casida 1982 takes priority over Sinorhizobium Chen et al. 1988, and Sinorhizobium morelense Wang et al. 2002 is a later synonym of Ensifer adhaerens Casida 1982. Is the combination "Sinorhizobium adhaerens" (Casida 1982) Willems et al. 2003 legitimate? Request for an Opinion. Int J Syst Evol Microbiol 2003; 53:2107-2110. 🇳🇿

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 6 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:309-311.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Ensifer fredii (Scholla and Elkan 1984) Young 2003

Risk group: 1

• Synonyms:

  • Name	Kind
    Sinorhizobium xinjiangensis Chen et al. 1988	homotypic synonym, inaccurate spelling
    Sinorhizobium xinjiangense corrig. Chen et al. 1988	homotypic synonym, validly published under the ICNP
    Ensifer fredii (Scholla and Elkan 1984) Young 2003	heterotypic synonym, validly published under the ICNP
    Rhizobium fredii Scholla and Elkan 1984	heterotypic synonym, validly published under the ICNP
    Sinorhizobium fredii (Scholla and Elkan 1984) Chen et al. 1988	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Martens et al. (2008), this species is a later heterotypic synonym of Ensifer fredii (Scholla and Elkan 1984) Young 2003. Publication: Martens M, Dawyndt P, Coopman R, Gillis M, De Vos P, Willems A. Advantages of multilocus sequence analysis for taxonomic studies: a case study using 10 housekeeping genes in the genus Ensifer (including former Sinorhizobium). Int J Syst Evol Microbiol 2008; 58:200-214. 🇧🇪
  • ⏲ According to Martens et al. (2008), this species is a later heterotypic synonym of Rhizobium fredii Scholla and Elkan 1984. Publication: Martens M, Dawyndt P, Coopman R, Gillis M, De Vos P, Willems A. Advantages of multilocus sequence analysis for taxonomic studies: a case study using 10 housekeeping genes in the genus Ensifer (including former Sinorhizobium). Int J Syst Evol Microbiol 2008; 58:200-214. 🇧🇪
  • ⏲ According to Martens et al. (2008), this species is a later heterotypic synonym of Sinorhizobium fredii (Scholla and Elkan 1984) Chen et al. 1988. Publication: Martens M, Dawyndt P, Coopman R, Gillis M, De Vos P, Willems A. Advantages of multilocus sequence analysis for taxonomic studies: a case study using 10 housekeeping genes in the genus Ensifer (including former Sinorhizobium). Int J Syst Evol Microbiol 2008; 58:200-214. 🇧🇪
  • ❗ Ensifer xinjiangensis is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Ensifer.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 2 times in PubMed until 2026-06-11.

Parent taxon: Ensifer Casida 1982

Assigned by: Young JM. The genus name Ensifer Casida 1982 takes priority over Sinorhizobium Chen et al. 1988, and Sinorhizobium morelense Wang et al. 2002 is a later synonym of Ensifer adhaerens Casida 1982. Is the combination "Sinorhizobium adhaerens" (Casida 1982) Willems et al. 2003 legitimate? Request for an Opinion. Int J Syst Evol Microbiol 2003; 53:2107-2110. 🇳🇿

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Record number: 775926