Name: Rhizorhabdus Francis et al. 2014

Category: Genus

Proposed as: gen. nov.

Etymology: Rhi.zo.rhab’dus. Gr. fem. n. rhiza, root; Gr. fem. n. rhabdos, rod; N.L. fem. n. Rhizorhabdus, a rod associated with roots

Gender, pronunciation: feminine (stem: Rhizorhabd-), r^hi-zo-R^HAB-dus

Type species: Rhizorhabdus argentea Francis et al. 2014

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Francis IM, Jochimsen KN, De Vos P, van Bruggen AH. Reclassification of rhizosphere bacteria including strains causing corky root of lettuce and proposal of Rhizorhapis suberifaciens gen. nov., comb. nov., Sphingobium mellinum sp. nov., Sphingobium xanthum sp. nov. and Rhizorhabdus argentea gen. nov., sp. nov. Int J Syst Evol Microbiol 2014; 64:1340-1350. 🇺🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 64, part 4 of the IJSEM. Int J Syst Evol Microbiol 2014; 64:2188-2190.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Emendations:
  • Kim et al. 2016 Kim M, Kang O, Zhang Y, Ren L, Chang X, Jiang F, Fang C, Zheng C, Peng F. Sphingoaurantiacus polygranulatus gen. nov., sp. nov., isolated from high-Arctic tundra soil, and emended descriptions of the genera Sandarakinorhabdus, Polymorphobacter and Rhizorhabdus and the species Sandarakinorhabdus limnophila, Rhizorhabdus argentea and Sphingomonas wittichii. Int J Syst Evol Microbiol 2016; 66:91-100. 🇨🇳 Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 66, part 1 of the IJSEM. Int J Syst Evol Microbiol 2016; 66:1607-1611.
    Notes:
    • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Contrasting the term "chemotaxonomic" with "phenotypic" is not recommended. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. See the LPSN phylogeny page for details.

• Notes:
  • 🥇 Nomenclatural type of the family Rhizorhabdaceae Wang et al. 2025. Publication: Wang Y, You H, Kong YH, Sun C, Wu LH, Kim SG, Lee JS, Xu L, Xu XW. Genomic-based taxonomic classification of the order Sphingomonadales. Int J Syst Evol Microbiol 2025; 75:6769. 🇨🇳
  • 🧕 Wang et al. (2025) assigned this genus to the family Rhizorhabdaceae Wang et al. 2025. Publication: Wang Y, You H, Kong YH, Sun C, Wu LH, Kim SG, Lee JS, Xu L, Xu XW. Genomic-based taxonomic classification of the order Sphingomonadales. Int J Syst Evol Microbiol 2025; 75:6769. 🇨🇳
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 6; LMG: 3; KCTC: 3; CCTCC: 2; BCRC: 1; MTCC: 1; ATCC: 1; CCP: 1; CCUG: 1; CCM: 1.

Subdivision:

Number of child taxa with a validly published and correct name: 7
Number of child taxa with a validly published name, including synonyms: 9
Total number of child taxa: 9

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Rhizorhabdus antheiae Messner et al. 2026	validly published under the ICNP	correct name
    Rhizorhabdus argentea Francis et al. 2014	validly published under the ICNP	correct name
    Rhizorhabdus crocodyli (Sheu et al. 2019) Wang et al. 2025	validly published under the ICNP	synonym
    Rhizorhabdus dicambivorans Yao et al. 2016	validly published under the ICNP	correct name
    Rhizorhabdus histidinilytica (Nigam et al. 2010) Hördt et al. 2020	validly published under the ICNP	correct name
    Rhizorhabdus montanisoli (Xu et al. 2020) Wang et al. 2025	validly published under the ICNP	synonym
    Rhizorhabdus phycosphaerae Kim et al. 2022	validly published under the ICNP	correct name
    Rhizorhabdus starnbergensis (Chen et al. 2013) Hördt et al. 2020	validly published under the ICNP	correct name
    Rhizorhabdus wittichii (Yabuuchi et al. 2001) Hördt et al. 2020	validly published under the ICNP	correct name

Parent taxon: Sphingomonadaceae Kosako et al. 2000

Assigned by: Francis IM, Jochimsen KN, De Vos P, van Bruggen AH. Reclassification of rhizosphere bacteria including strains causing corky root of lettuce and proposal of Rhizorhapis suberifaciens gen. nov., comb. nov., Sphingobium mellinum sp. nov., Sphingobium xanthum sp. nov. and Rhizorhabdus argentea gen. nov., sp. nov. Int J Syst Evol Microbiol 2014; 64:1340-1350. 🇺🇸

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Record number: 518521