Name: Sphingopyxis Takeuchi et al. 2001

Category: Genus

Proposed as: gen. nov.

Etymology: Sphin.go.py’xis. N.L. neut. n. sphingosinum, sphingosine; from Gr. fem. n. sphinx (gen. sphingos), of sphinx; from Chem. fem. suff. -ine; N.L. pref. sphingo-, pertaining to sphingosine (in compound words condensed from sphingosinum); Gr. fem. n. pyxis (gen. pyxidos), box, case, container; N.L. fem. n. Sphingopyxis, intended to mean box of sphingolipid-containing life

Gender, pronunciation: feminine (stem: Sphingopyxid-), sp^hin-go-PY-ksis

Type species: Sphingopyxis macrogoltabida (Takeuchi et al. 1993) Takeuchi et al. 2001

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Takeuchi M, Hamana K, Hiraishi A. Proposal of the genus Sphingomonas sensu stricto and three new genera, Sphingobium, Novosphingobium and Sphingopyxis, on the basis of phylogenetic and chemotaxonomic analyses. Int J Syst Evol Microbiol 2001; 51:1405-1417. 🇯🇵

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 4 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1621-1623.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Baik et al. 2013 Baik KS, Choe HN, Park SC, Hwang YM, Kim EM, Park C, Seong CN. Sphingopyxis rigui sp. nov. and Sphingopyxis wooponensis sp. nov., isolated from wetland freshwater, and emended description of the genus Sphingopyxis. Int J Syst Evol Microbiol 2013; 63:1297-1303. 🇰🇷 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 63, part 4 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:2368-2370.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 2 new species in the genus.
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.
    Notes:
    • ⊖ Emendation accompanied by the removal of 1 species from the genus.

• Notes:
  • 🥇 Nomenclatural type of the family Sphingopyxidaceae 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 Sphingopyxidaceae 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 type species of this genus has alternatively been placed in the genus Sphingomonas Yabuuchi et al. 1990. Publication: Takeuchi M, Kawai F, Shimada Y, Yokota A. Taxonomic study of polyethylene glycol-utilizing bacteria: emended description of the genus Sphingomonas and new descriptions of Sphingomonas macrogoltabidus sp. nov., Sphingomonas sanguis sp. nov., and Sphingomonas terrae sp. nov. Syst. Appl. Microbiol. 1993; 16:227-238. 🇯🇵
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Ingopyxis"; "Phingopyxis"; "Sphingopixis"; "Sphinogpyxis"; "Spingopyxis".
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Feng et al. (2017), Takeuchi et al. (2001), Sharma et al. (2010), Verma et al. (2015), Chaudhary and Kim (2018). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 25; KCTC: 15; JCM: 13; LMG: 8; NBRC: 5; CIP: 5; KACC: 3; IFO: 3; ATCC: 3; CGMCC: 2.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 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.
  • 🧍 See also Sharma et al. (2021). Publication: Sharma M, Khurana H, Singh DN, Negi RK. The genus Sphingopyxis: Systematics, ecology, and bioremediation potential - A review. J Environ Manage 2021; 280:111744.
  • 🧍 On the basis of phylogenetic analysis of 16S rDNA sequences and polyamine profiles, Takeuchi et al. 2001 [1] proposed that the genus Sphingomonas be classified into four genera Sphingomonas Yabuuchi et al. 1990 emend. Takeuchi et al. 2001, Novosphingobium Takeuchi et al. 2001, Sphingobium Takeuchi et al. 2001 and Sphingopyxis Takeuchi et al. 2001. Publication: Takeuchi M, Hamana K, Hiraishi A. Proposal of the genus Sphingomonas sensu stricto and three new genera, Sphingobium, Novosphingobium and Sphingopyxis, on the basis of phylogenetic and chemotaxonomic analyses. Int J Syst Evol Microbiol 2001; 51:1405-1417. 🇯🇵
  • 🧍 Yabuuchi et al. 2002 [2] found that there is no phenotypic and phylogenetic evidence to support a proposal to split the species into four genera. These authors concluded that the genus Sphingomonas should remain undivided at this time and that the species of genera Novosphingobium, Sphingobium and Sphingopyxis, in conjunction with Blastomonas ursincola (Yurkov et al. 1997) Hiraishi et al. 2000, should be treated as species of the genus Sphingomonas. Publication: Yabuuchi E, Kosako Y, Fujiwara N, Naka T, Matsunaga I, Ogura H, Kobayashi K. Emendation of the genus Sphingomonas Yabuuchi et al. 1990 and junior objective synonymy of the species of three genera, Sphingobium, Novosphingobium and Sphingopyxis, in conjunction with Blastomonas ursincola. Int J Syst Evol Microbiol 2002; 52:1485-1496. 🇯🇵

Subdivision:

Number of child taxa with a validly published and correct name: 22
Number of child taxa with a validly published name, including synonyms: 30
Total number of child taxa: 32

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Sphingopyxis alaskensis (Vancanneyt et al. 2001) Godoy et al. 2003	validly published under the ICNP	correct name
    Sphingopyxis baekryungensis Yoon et al. 2005	validly published under the ICNP	synonym
    Sphingopyxis bauzanensis Zhang et al. 2010	validly published under the ICNP	correct name
    Sphingopyxis chilensis Godoy et al. 2003	validly published under the ICNP	correct name
    Sphingopyxis contaminans Subhash et al. 2014	validly published under the ICNP	synonym
    Sphingopyxis flava Verma et al. 2015	validly published under the ICNP	correct name
    Sphingopyxis flavimaris Yoon and Oh 2005	validly published under the ICNP	synonym
    Sphingopyxis fribergensis Oelschlägel et al. 2015	validly published under the ICNP	correct name
    Sphingopyxis ginsengisoli Lee et al. 2008	validly published under the ICNP	correct name
    Sphingopyxis granuli Kim et al. 2011	validly published under the ICNP	correct name
    Sphingopyxis indica Jindal et al. 2013	validly published under the ICNP	correct name
    Sphingopyxis italica Alias-Villegas et al. 2013	validly published under the ICNP	correct name
    Sphingopyxis jiangsuensis Gao et al. 2023	validly published under the ICNP	correct name
    Sphingopyxis kveilinensis Chen et al. 2025	validly published under the ICNP	correct name
    Sphingopyxis lindanitolerans Kaminski et al. 2018	validly published under the ICNP	correct name
    Sphingopyxis litoris Kim et al. 2008	validly published under the ICNP	synonym
    Sphingopyxis lutea Chhetri et al. 2023	validly published under the ICNP	synonym
    Sphingopyxis macrogoltabida (Takeuchi et al. 1993) Takeuchi et al. 2001	validly published under the ICNP	correct name
    Sphingopyxis marina Kim et al. 2008	validly published under the ICNP	synonym
    "Sphingopyxis microcysteis" Zhang et al. 2021	not validly published	preferred name
    Sphingopyxis nepalensis Chaudhary and Kim 2018	validly published under the ICNP	correct name
    Sphingopyxis panaciterrae Lee et al. 2011	validly published under the ICNP	correct name
    Sphingopyxis panaciterrulae Srinivasan et al. 2010	validly published under the ICNP	correct name
    Sphingopyxis rigui Baik et al. 2013	validly published under the ICNP	synonym
    Sphingopyxis soli Choi et al. 2010	validly published under the ICNP	correct name
    Sphingopyxis solisilvae Chaudhary et al. 2017	validly published under the ICNP	correct name
    Sphingopyxis taejonensis (Lee et al. 2001) Pal et al. 2006	validly published under the ICNP	correct name
    Sphingopyxis terrae (Takeuchi et al. 1993) Takeuchi et al. 2001	validly published under the ICNP	correct name
    Sphingopyxis ummariensis Sharma et al. 2010	validly published under the ICNP	correct name
    Sphingopyxis witflariensis Kämpfer et al. 2002	validly published under the ICNP	correct name
    Sphingopyxis wooponensis Baik et al. 2013	validly published under the ICNP	synonym
    "Sphingopyxis yananensis" Zheng et al. 2022	not validly published	preferred name

Parent taxon: Sphingomonadaceae Kosako et al. 2000

Assigned by: Yoon JH, Lee CH, Yeo SH, Oh TK. Sphingopyxis baekryungensis sp. nov., an orange-pigmented bacterium isolated from sea water of the Yellow Sea in Korea. Int J Syst Evol Microbiol 2005; 55:1223-1227. 🇰🇷

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Record number: 516630