Name: Serratia marcescens Bizio 1823 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: mar.ces’cens. L. fem. part. adj. marcescens, becoming weak, fading away

Pronunciation (Latin), gender: ser-RA-ti-a mar-KES-kens, feminine

Type strain: ATCC 13880; CCUG 1647; CFBP 4226; CIP 103235; DSM 30121; HAMBI 1286; JCM 1239; LMG 2792; NBRC 102204; NCTC 10211; NRRL B-2544; VKM B-1248

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59160 Analyse FASTA

Effective publication: Bizio B. Lettera di Bartolomeo Bizio al chiarissimo canonico Angelo Bellani sopra il fenomeno della polenta porporina. Biblioteca Italiana o sia Giornale di Letteratura, Scienze e Arti (Anno VIII) 1823; 30:275-295.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Serratia marcescens subsp. sakuensis Ajithkumar et al. 2003	heterotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • 🥇 Nomenclatural type of the genus Serratia Bizio 1823 (Approved Lists 1980). Publication: Bizio B. Lettera di Bartolomeo Bizio al chiarissimo canonico Angelo Bellani sopra il fenomeno della polenta porporina. Biblioteca Italiana o sia Giornale di Letteratura, Scienze e Arti (Anno VIII) 1823; 30:275-295.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: 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.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - biological class of risk animal: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 7732 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 Plant pathogenic according to Bull et al. (2007). Publication: Bull CT, De Boer SH, Denny TP, Firrao G, Fischer Le Saux M, Saddler GS, Scortichini M, Stead DE, Takikawa Y. Comprehensive list of names of plant pathogenic bacteria, 1980-2007. Journal of Plant Pathology 2010; 92:551-592. 🇺🇸
  • 🧍 See also Martinec and Kocur (1961). Publication: Martinec T, Kocur M. The taxonomic status of Serratia marcescens Bizio. International Bulletin of Bacteriological Nomenclature and Taxonomy 1961; 11:7-12.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Serratia marcescens subsp. marcescens (Bizio 1823) Ajithkumar et al. 2003	validly published under the ICNP	synonym of its species
    Serratia marcescens subsp. sakuensis Ajithkumar et al. 2003	validly published under the ICNP	synonym

Parent taxon: Serratia Bizio 1823 (Approved Lists 1980)

Assigned by: Bizio B. Lettera di Bartolomeo Bizio al chiarissimo canonico Angelo Bellani sopra il fenomeno della polenta porporina. Biblioteca Italiana o sia Giornale di Letteratura, Scienze e Arti (Anno VIII) 1823; 30:275-295.

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Record number: 780876