Genus Ruegeria

Classification:

Bacteria Pseudomonadati Pseudomonadota Alphaproteobacteria Rhodobacterales Roseobacteraceae Ruegeria

Name: Ruegeria Uchino et al. 1999

Category, proposed as: genus, gen. nov.

Etymology: Rue.ge’ri.a. N.L. fem. n. Ruegeria, named after Rueger, a German microbiologist, for his contribution to the taxonomy of marine species of Agrobacterium

Gender, pronunciation (Latin): feminine (stem: Ruegeri-), ru͡e-GE-ri-a

Type species: Ruegeria atlantica (Rüger and Höfle 1992) Uchino et al. 1999

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Uchino Y, Hirata A, Yokota A, Sugiyama J. Reclassification of marine Agrobacterium species: Proposals of Stappia stellulata gen. nov., comb. nov., Stappia aggregata sp. nov., nom. rev., Ruegeria atlantica gen. nov., comb. nov., Ruegeria gelatinovora comb. nov., Ruegeria algicola comb. nov., and Ahrensia kieliense gen. nov., sp. nov., nom. rev. J Gen Appl Microbiol 1998; 44:201-210. 🇯🇵

IJSEM list: Anonymous. Validation list no. 68. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1999; 49:1-3.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Synonyms:

Name	Kind
Silicibacter Petursdottir and Kristjansson 1999	heterotypic synonym, validly published under the ICNP
Thalassovita Deshmukh and Oren 2023	heterotypic synonym, validly published under the ICNP, illegitimate name
Falsiruegeria Liang et al. 2021	heterotypic synonym, validly published under the ICNP

Emendations:
- Martens et al. 2006 Martens T, Heidorn T, Pukall R, Simon M, Tindall BJ, Brinkhoff T. Reclassification of Roseobacter gallaeciensis Ruiz-Ponte et al. 1998 as Phaeobacter gallaeciensis gen. nov., comb. nov., description of Phaeobacter inhibens sp. nov., reclassification of Ruegeria algicola (Lafay et al. 1995) Uchino et al. 1999 as Marinovum algicola gen. nov., comb. nov., and emended descriptions of the genera Roseobacter, Ruegeria and Leisingera. Int J Syst Evol Microbiol 2006; 56:1293-1304. 🇩🇪 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 56, part 6 of the IJSEM. Int J Syst Evol Microbiol 2006; 56:2029-2030.
  Notes:
  - ⊖ Emendation accompanied by the removal of 1 species from the genus.
- Yi et al. 2007 Yi H, Lim YW, Chun J. Taxonomic evaluation of the genera Ruegeria and Silicibacter: a proposal to transfer the genus Silicibacter Petursdottir and Kristjansson 1999 to the genus Ruegeria Uchino et al. 1999. Int J Syst Evol Microbiol 2007; 57:815-819. 🇰🇷 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 57, part 4 of the IJSEM. Int J Syst Evol Microbiol 2007; 57:1374-1375.
  Notes:
  - ⊕ Emendation accompanied by the proposal of 2 new species in the genus.
- Wirth and Whitman 2018 Wirth JS, Whitman WB. Phylogenomic analyses of a clade within the roseobacter group suggest taxonomic reassignments of species of the genera Aestuariivita, Citreicella, Loktanella, Nautella, Pelagibaca, Ruegeria, Thalassobius, Thiobacimonas and Tropicibacter, and the proposal of six novel genera. Int J Syst Evol Microbiol 2018; 68:2393-2411. 🇺🇸 Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 68, part 7 of the IJSEM. Int J Syst Evol Microbiol 2018; 68:3077-3079.
  Notes:
  - ⊖ Emendation accompanied by the removal of 2 species from the genus.
  - ⊕ Emendation accompanied by the proposal of 2 new species in the genus.

Notes:
- 🧕 Kämpfer et al. (2013) assigned this genus to the family Rhodobacteraceae Garrity et al. 2006. Publication: Kampfer P, Arun AB, Rekha PD, Busse HJ, Young CC, Glaeser SP. Ruegeria intermedia sp. nov., a moderately thermophilic bacterium isolated from a coastal hot spring. Int J Syst Evol Microbiol 2013; 63:2538-2544. 🇩🇪
- 🚋 The type species of this genus has alternatively been placed in the genus Agrobacterium Conn 1942 (Approved Lists 1980). Publication: Ruger HJ, Hofle MG. Marine star-shaped-aggregate-forming bacteria: Agrobacterium atlanticum sp. nov.; Agrobacterium meteori sp. nov.; Agrobacterium ferrugineum sp. nov., nom. rev.; Agrobacterium gelatinovorum sp. nov., nom. rev.; and Agrobacterium stellulatum sp. nov., nom. rev. Int J Syst Bacteriol 1992; 42:133-143.
- 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Reuegeria"; "Reugeria"; "Ruegaria"; "Rugeria".
- 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Imhoff JF, Madigan MT. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of phototrophic bacteria. Minutes of the Meetings, 28 August 2000, Barcelona, Spain. Int. J. Syst. Evol. Microbiol. 2002; 52:2335-2336. 🇩🇪
- 💁 Taxonomists who have recently focused on this group are the corresponding authors of Lucena et al. (2013), Moon et al. (2025), Kim et al. (2014). 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: 15; JCM: 11; KCTC: 11; LMG: 7; NBRC: 7; ATCC: 6; CECT: 6; MCCC: 6; IAM: 5; CIP: 5.

Subdivision:

Number of child taxa with a validly published and correct name: 26
Number of child taxa with a validly published name, including synonyms: 32
Total number of child taxa: 33

Child taxa:

Name	Nomenclatural status	Taxonomic status
Ruegeria alba Du et al. 2022	validly published under the ICNP	correct name
Ruegeria algicola (Lafay et al. 1995) Uchino et al. 1999	validly published under the ICNP	synonym
Ruegeria aquimaris He et al. 2024	validly published under the ICNP	correct name
Ruegeria arenilitoris Park and Yoon 2013	validly published under the ICNP	correct name
Ruegeria atlantica (Rüger and Höfle 1992) Uchino et al. 1999	validly published under the ICNP	correct name
Ruegeria conchae Lee et al. 2012	validly published under the ICNP	correct name
Ruegeria denitrificans Arahal et al. 2018	validly published under the ICNP	correct name
Ruegeria discodermiae Moon et al. 2026	validly published under the ICNP	correct name
Ruegeria faecimaris Oh et al. 2011	validly published under the ICNP	correct name
Ruegeria gelatinovora (Rüger and Höfle 1992 ex Ahrens 1968) Uchino et al. 1999	inaccurate spelling	misspelling
Ruegeria gelatinovorans corrig. (Rüger and Höfle 1992 ex Ahrens 1968) Uchino et al. 1999	validly published under the ICNP	correct name
Ruegeria haliotis Cao et al. 2021	validly published under the ICNP	correct name
Ruegeria halocynthiae Kim et al. 2012	validly published under the ICNP	correct name
Ruegeria hyattellae Moon et al. 2026	validly published under the ICNP	correct name
Ruegeria intermedia Kämpfer et al. 2013	validly published under the ICNP	correct name
Ruegeria jejuensis Moon et al. 2026	validly published under the ICNP	correct name
Ruegeria kandeliae Zhang et al. 2018	validly published under the ICNP	synonym
Ruegeria lacuscaerulensis (Petursdottir and Kristjansson 1999) Yi et al. 2007	validly published under the ICNP	correct name
Ruegeria litorea (Lucena et al. 2014) Wirth and Whitman 2018	validly published under the ICNP	correct name
Ruegeria lutea Kim et al. 2019	validly published under the ICNP	synonym
Ruegeria marina Huo et al. 2011	validly published under the ICNP	correct name
Ruegeria marisflavi He et al. 2024	validly published under the ICNP	correct name
Ruegeria marisrubri Zhang et al. 2017	validly published under the ICNP	correct name
Ruegeria mediterranea (Lucena et al. 2014) Wirth and Whitman 2018	validly published under the ICNP	correct name
Ruegeria meonggei Kim et al. 2014	validly published under the ICNP	correct name
Ruegeria meteori (Rüger and Höfle 1992) Hördt et al. 2020	validly published under the ICNP	correct name
Ruegeria mobilis Muramatsu et al. 2007	validly published under the ICNP	synonym
Ruegeria pelagia Lee et al. 2007	validly published under the ICNP	synonym
Ruegeria pomeroyi (González et al. 2003) Yi et al. 2007	validly published under the ICNP	correct name
Ruegeria profundi Zhang et al. 2017	validly published under the ICNP	correct name
Ruegeria scottomollicae Vandecandelaere et al. 2008	validly published under the ICNP	synonym
Ruegeria sediminis Baek et al. 2020	validly published under the ICNP	correct name
Ruegeria spongiae Han and Park 2023	validly published under the ICNP	correct name

Parent taxon: Roseobacteraceae Liang et al. 2021

Assigned by: Liang KYH, Orata FD, Boucher YF, Case RJ. Roseobacters in a Sea of Poly- and Paraphyly: Whole Genome-Based Taxonomy of the Family Rhodobacteraceae and the Proposal for the Split of the "Roseobacter Clade" Into a Novel Family, Roseobacteraceae fam. nov. Front Microbiol 2021; 12:683109. 🇨🇦

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Record number: 516516

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