Name: Flectobacillus rhizosphaerae Ramaprasad et al. 2015

Category: Species

Proposed as: sp. nov.

Etymology: rhi.zo.sphae’rae. Gr. fem. n. rhiza, a root; Gr. fem. n. sphaîra, a ball, a sphere; N.L. fem. n. rhizosphaera, the rhizosphere; N.L. gen. fem. n. rhizosphaerae, of the rhizosphere

Pronunciation, gender: r^hi-zo-SP^HA͡E-ra͡e, masculine

Type strain: JC289; KCTC 42575; LMG 28712

Conduct genome-based taxonomy at

16S rRNA gene: LN810638 Analyse FASTA

Valid publication: Ramaprasad EV, Sasikala Ch, Ramana ChV. Flectobacillus rhizosphaerae sp. nov., isolated from the rhizosphere soil of Oryza sativa (L.), and emended description of the genus Flectobacillus. Int J Syst Evol Microbiol 2015; 65:3451-3456.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 65, part 10 of the IJSEM. Int J Syst Evol Microbiol 2016; 66:4-6.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Flectobacillus roseus Sheu et al. 2009

Risk group: 1

• Synonyms:

  • Name	Kind
    Flectobacillus roseus Sheu et al. 2009	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Lu et al. (2023), this species is a later heterotypic synonym of Flectobacillus roseus Sheu et al. 2009. Publication: Lu H, Li P, Chen L, Chen G. Flectobacillus longus sp. nov. and Flectobacillus rivi sp. nov., isolated from streams in China and reclassification of Flectobacillus rhizosphaerae as a synonym of Flectobacillus roseus. International Journal of Systematic and Evolutionary Microbiology 2023; 73:0.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 73, part 11 of the IJSEM. Int J Syst Evol Microbiol 2024; 74:6213.
  • ❗ Flectobacillus rhizosphaerae 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 Flectobacillus.
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 2025-06-04.

Parent taxon: Flectobacillus Larkin et al. 1977 (Approved Lists 1980)

Assigned by: Ramaprasad EV, Sasikala Ch, Ramana ChV. Flectobacillus rhizosphaerae sp. nov., isolated from the rhizosphere soil of Oryza sativa (L.), and emended description of the genus Flectobacillus. Int J Syst Evol Microbiol 2015; 65:3451-3456.

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Record number: 793332