Name: Nannocystis Reichenbach 1970 (Approved Lists 1980)

Category: Genus

Proposed as: gen. nov.

Etymology: Nan.no.cys’tis. Gr. masc. adj. nannos, dwarf; Gr. fem. n. kystis, bladder; N.L. fem. n. Nannocystis, tiny bag

Gender, pronunciation (Latin): feminine (stem: Nannocyst-), nan-no-KYS-tis

Type species: Nannocystis exedens Reichenbach 1970 (Approved Lists 1980)

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Reichenbach H. Nannocystis exedens gen. nov., spec. nov., a new myxobacterium of the family Sorangiaceae. Arch Mikrobiol 1970; 70:119-138.

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

• Notes:
  • 🥇 Nomenclatural type of the family Nannocystaceae Reichenbach 2006. Publication: Reichenbach H. Family IV. Nannocystaceae fam. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 1136-1137. 🇺🇸
  • 🥇 Nomenclatural type of the order Nannocystales (Reichenbach 2007) Waite et al. 2020. Publication: Waite DW, Chuvochina M, Pelikan C, Parks DH, Yilmaz P, Wagner M, Loy A, Naganuma T, Nakai R, Whitman WB, et al. Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities. Int J Syst Evol Microbiol 2020; 70:5972-6016. 🇳🇿
  • 🥇 Nomenclatural type of the suborder Nannocystineae Reichenbach 2007. Publication: Reichenbach H. Order VIII. Myxococcales Tchan, Pochon and Prévot 1948, 398AL. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 1059-1072. 🇺🇸
  • 🧕 Boone et al. (2001) assigned this genus to the family Polyangiaceae Jahn 1924 (Approved Lists 1980). Publication: Garrity GM, Holt JG. The Road Map to the Manual. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 119-166. 🇺🇸
  • 🧕 Brenner et al. (2005) assigned this genus to the suborder Nannocystineae Reichenbach 2007. Publication: Reichenbach H. Genus I. Nannocystis Reichenbach 1970, 137AL. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 2 (The Proteobacteria) part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 1137-1142. 🇺🇸
  • 🧕 Waite et al. (2020) assigned this genus to the order Nannocystales (Reichenbach 2007) Waite et al. 2020. Publication: Waite DW, Chuvochina M, Pelikan C, Parks DH, Yilmaz P, Wagner M, Loy A, Naganuma T, Nakai R, Whitman WB, et al. Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities. Int J Syst Evol Microbiol 2020; 70:5972-6016. 🇳🇿
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Nrmnocystis".
  • 🎰 The BRCs most frequently used for deposits in this group are: NCCB: 5; DSM: 3; ATCC: 3; CIP: 1; JCM: 1.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "NACS" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 7

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Nannocystis bainbridgea" Ahearne et al. 2023	not validly published	preferred name
    Nannocystis exedens Reichenbach 1970 (Approved Lists 1980)	validly published under the ICNP	correct name
    Nannocystis konarekensis Mohr et al. 2018	validly published under the ICNP	correct name
    Nannocystis poenicansa Ahearne et al. 2025	inaccurate spelling	misspelling
    Nannocystis punicea corrig. Ahearne et al. 2025	validly published under the ICNP	correct name
    Nannocystis pusilla Reichenbach 2007	validly published under the ICNP	correct name
    "Nannocystis radixulma" Ahearne et al. 2023	not validly published	preferred name

Parent taxon: Nannocystaceae Reichenbach 2006

Assigned by: Reichenbach H. Family IV. Nannocystaceae fam. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 1136-1137. 🇺🇸

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Record number: 516150