Species "Sinorhizobium adhaerens"

Name: "Sinorhizobium adhaerens" (Casida 1982) Willems et al. 2003

Category, proposed as: species, comb. nov.

Basonym: Ensifer adhaerens Casida 1982

Etymology: ad.hae’rens. L. neut. part. adj. adhaerens, adherent

Pronunciation (Latin), gender: si-no-r^hi-ZO-bi-um ad-HA͡E-rens, neuter

Nomenclatural type: A; ATCC 33212; JCM 21105; LMG 20216; NBRC 100388

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB681163 Analyse FASTA

Original publication: Willems A, Fernandez-Lopez M, Munoz-Adelantado E, Goris J, De Vos P, Martinez-Romero E, Toro N, Gillis M. Description of new Ensifer strains from nodules and proposal to transfer Ensifer adhaerens Casida 1982 to Sinorhizobium as Sinorhizobium adhaerens comb. nov. Request for an opinion. Int J Syst Evol Microbiol 2003; 53:1207-1217. 🇧🇪

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Ensifer adhaerens Casida 1982

• Synonyms:

  • Name	Kind
    Ensifer adhaerens Casida 1982	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Wang et al. (2013), this species is not an earlier heterotypic synonym of Ensifer morelense (Wang et al. 2002) Wang et al. 2015. Publication: Wang YC, Wang F, Hou BC, Wang ET, Chen WF, Sui XH, Chen WX, Li Y, Zhang YB. Proposal of Ensifer psoraleae sp. nov., Ensifer sesbaniae sp. nov., Ensifer morelense comb. nov. and Ensifer americanum comb. nov. Syst Appl Microbiol 2013; 36:467-473. 🇨🇳
  • ⏰ According to Wang et al. (2013), this species is not an earlier heterotypic synonym of Sinorhizobium morelense Wang et al. 2002. Publication: Wang YC, Wang F, Hou BC, Wang ET, Chen WF, Sui XH, Chen WX, Li Y, Zhang YB. Proposal of Ensifer psoraleae sp. nov., Ensifer sesbaniae sp. nov., Ensifer morelense comb. nov. and Ensifer americanum comb. nov. Syst Appl Microbiol 2013; 36:467-473. 🇨🇳
  • ⏰ According to Wang et al. (2013), this species is not an earlier heterotypic synonym of Ensifer morelensis corrig. (Wang et al. 2002) Wang et al. 2015. Publication: Wang YC, Wang F, Hou BC, Wang ET, Chen WF, Sui XH, Chen WX, Li Y, Zhang YB. Proposal of Ensifer psoraleae sp. nov., Ensifer sesbaniae sp. nov., Ensifer morelense comb. nov. and Ensifer americanum comb. nov. Syst Appl Microbiol 2013; 36:467-473. 🇨🇳
  • ⏰ According to Young (2003), this species is an earlier heterotypic synonym of Ensifer morelense (Wang et al. 2002) Wang et al. 2015. 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. 🇳🇿
  • ⏰ According to Young (2003), this species is an earlier heterotypic synonym of Sinorhizobium morelense Wang et al. 2002. 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. 🇳🇿
  • ⏰ According to Young (2003), this species is an earlier heterotypic synonym of Ensifer morelensis corrig. (Wang et al. 2002) Wang et al. 2015. 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. 🇳🇿
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. Validation list no. 162. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2015; 65:741-744.
  • 🧍 Considered not validly published. Publication: Oren A, Arahal DR, Christensen H, Goker M, Manaia CM, Moore ERB. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2025 Revision). Int J Syst Evol Microbiol 2026; 76:6979. 🇮🇱

Parent taxon: Sinorhizobium Chen et al. 1988

Assigned by: Willems A, Fernandez-Lopez M, Munoz-Adelantado E, Goris J, De Vos P, Martinez-Romero E, Toro N, Gillis M. Description of new Ensifer strains from nodules and proposal to transfer Ensifer adhaerens Casida 1982 to Sinorhizobium as Sinorhizobium adhaerens comb. nov. Request for an opinion. Int J Syst Evol Microbiol 2003; 53:1207-1217. 🇧🇪

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Record number: 4235