Minimal Standards

Introduction

See the glossary entry on minimal standards for the description of new taxa for details, as well as Appendix 6 of the International Code of Nomenclature of Prokaryotes (2008 revision), Int J Syst Evol Microbiol 2019; 69:S1-S111. A list of minimal standards published by taxonomic subcommittees is provided below together with associated publications and assorted by the group of organisms to which each one applies. Note that more recently published proposals for minimal standards may supersede older proposals. The list also includes minutes of the meeting of the same taxonomic subcommittees. The website of the ICSP also contains information on taxonomic subcommittees.

Aerobic Bacteroidetes

Meeting report: Int J Syst Evol Microbiol 2020; 70:6017-6020. Note: "International Committee on Systematics of Prokaryotes: Subcommittee on the Taxonomy of Aerobic Bacteroidetes (formerly Flavobacterium and Cytophaga-like bacteria)" Affected taxa: Balneolaceae, "Balneolaceae", Bernardetiaceae, Blattabacteriaceae, Chitinophagaceae, Cryomorphaceae, Cyclobacteriaceae, Cytophagaceae, Flammeovirgaceae, Flavobacteriaceae, Haliscomenobacteraceae, Hymenobacteraceae, Lewinellaceae, Marinifilaceae, Marinilabiliaceae, Microscillaceae, Persicobacteraceae, Prolixibacteraceae, Rhodothermaceae, Rubricoccaceae, Salinibacteraceae, Saprospiraceae, Sphingobacteriaceae, Thermonemataceae, Adhaeribacter, Bernardetia, Cryomorpha, Epilithonimonas, Flavobacterium, Flexibacter, Garritya, Luteibaculum, Persicobacter, Phaeodactylibacter, Sphingobacterium, Tenacibaculum.
Meeting report: Int J Syst Evol Microbiol 2017; 67:507-509. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aerobic Bacteroidetes (formerly Flavobacterium and Cytophaga-like bacteria). Minutes of the meeting, 30 July 2014, Montreal, Canada" Affected taxa: Cytophagia, Flavobacteriia, Sphingobacteriia, Cryomorphaceae, Cyclobacteriaceae, Flammeovirgaceae, Flavobacteriaceae, Mooreiaceae, Schleiferiaceae, Sphingobacteriaceae, Chryseobacterium, Cryomorpha, Flavobacterium, Mooreia, Owenweeksia, Pibocella, Polaribacter, Pseudomonas, Schleiferia, Tenacibaculum, "Bacteroidetes".
Meeting report: Int J Syst Evol Microbiol 2013; 63:2752-2754. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Flavobacterium and Cytophaga-like bacteria: Minutes of the meetings, 7 September 2011, Sapporo, Japan" Affected taxa: Bacteroidia, Flavobacteriia, Sphingobacteriia, Blattabacteriaceae, Chitinophagaceae, Cryomorphaceae, Cyclobacteriaceae, Cytophagaceae, Flammeovirgaceae, Flavobacteriaceae, Marinilabiliaceae, Rhodothermaceae, Saprospiraceae, Schleiferiaceae, Sphingobacteriaceae, Capnocytophaga, Flavobacterium, Pedobacter, Sejongia, Sphingobacterium, Tenacibaculum, "Bacteroidetes", "Bacteroidia".
Minimal standards: Int J Syst Evol Microbiol 2002; 52:1049-1070. Note: For the Subcommittee on the taxonomy of Flavobacterium and Cytophaga-like bacteria of the International Committee on Systematics of Prokaryotes (former name of the Subcommittee on aerobic Bacteroidetes). Affected taxa: Cytophagaceae, Flavobacteriaceae, Cytophaga, Flavobacterium.
Meeting report: Int J Syst Evol Microbiol 2018; 68:2111-2112. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aeromonadaceae, Vibrionaceae and related organisms Minutes of the meeting, 13 November 2017, Chicago, USA" Affected taxa: Aeromonadaceae, Vibrionaceae.
Meeting report: Int J Syst Evol Microbiol 2017; 67:759-760. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aeromonadaceae, Vibrionaceae and related organisms  Minutes of the meetings, 31 March 2016, Roscoff, France" Affected taxa: Aeromonadaceae, Vibrionaceae, Vibrio.
Meeting report: Int J Syst Evol Microbiol 2012; 62:465-466. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aeromonadaceae, Vibrionaceae and related organisms. Minutes of the meetings, 7 September 2011, Sapporo, Japan" Affected taxa: Aeromonadaceae, Vibrionaceae.
Meeting report: Int J Syst Evol Microbiol 2009; 59:2638-2640. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aeromonadaceae, Vibrionaceae and related organisms. Minutes of the meetings, 6 August 2008, Istanbul, Turkey" Affected taxa: Aeromonadaceae, Halobacteriaceae, Vibrionaceae, Aeromonas, Aliivibrio, Photobacterium, Vibrio.
Meeting report: Int J Syst Evol Microbiol 2009; 59:2633-2637. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Aeromonadaceae, Vibrionaceae and related organisms. Minutes of the Meetings, 25 July 2005, San Francisco, CA, USA" Affected taxa: Aeromonadaceae, Vibrionaceae, Aeromonas, Beneckea, Plesiomonas corrig., Vibrio, "Vibrionales".
Meeting report: Int J Syst Evol Microbiol 2005; 55:539-542. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Vibrionaceae. Minutes of the meetings, 31 July 2002, Paris, France" Affected taxa: Aeromonadaceae, Vibrionaceae, Allomonas, Moraxella, Salinivibrio, Vibrio.
Meeting report: Int J Syst Evol Microbiol 2002; 52:2331-2333. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Vibrionaceae. Minutes of the meetings, 17 August 1999, Sydney, Australia" Affected taxa: Aeromonadaceae, Vibrionaceae, Aeromonas, Plesiomonas corrig., Vibrio.
Meeting report: Int J Syst Bacteriol 1999; 49:1945-1947. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrionaceae. Minutes of the closed meeting, 19 May 1998, Atlanta, GA, USA" Affected taxa: Vibrionaceae, Aeromonas, Plesiomonas corrig., Vibrio.
Meeting report: Int J Syst Bacteriol 1998; 48:1471. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrionaceae. Minutes of the closed meeting, 21 August 1996, Jerusalem, Israel" Affected taxa: Vibrionaceae, Aeromonas, Plesiomonas corrig., Vibrio.
Meeting report: Int J Syst Bacteriol 1998; 48:1467-1469. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrionaceae. Minutes of the meetings, 4 and 7 July 1994, Prague, Czech Republic" Affected taxa: Vibrionaceae, Aeromonas, Shigella, Vibrio.
Meeting report: Int J Syst Bacteriol 1992; 42:199-201. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrionaceae. Minutes of the meetings, 18 and 20 September 1990, Osaka, Japan" Affected taxa: Aeromonadaceae, Vibrionaceae, Aeromonas, Allomonas, Beneckea, Colwellia, Vibrio.
Meeting report: Int J Syst Bacteriol 1989; 39:210-212. Note: "International committee on systematic bacteriology, subcommittee on the taxonomy of Vibrionaceae. Minutes of the meetings, 8 and 11 September 1986, Manchester, England" Affected taxa: Aeromonadaceae, Vibrionaceae, Aeromonas, Allomonas, Halomonas, Vibrio.
Meeting report: Int J Syst Bacteriol 1984; 34:251-252. Note: "International Committee on Systematic Bacteriology, Subcommittee on the taxonomy of Vibrionaceae (Vibrios). Minutes of the meetings, 7 and 11 August 1982, Boston, Massachusetts" Affected taxa: Vibrionaceae, Aeromonas, Allomonas, Beneckea, Vibrio.
Meeting report: Int J Syst Bacteriol 1979; 29:170-171. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrios. Minutes of the meeting, 4 September 1978, Munich, Germany" Affected taxa: Aeromonas, Beneckea, Vibrio.
Meeting report: Int J Syst Bacteriol 1975; 25:392. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrios. Minutes of the open meeting, 4 September 1974, Tokyo, Japan" Affected taxa: Vibrio.
Meeting report: Int J Syst Bacteriol 1975; 25:389-391. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Vibrios. Minutes of the closed meeting, 3 September 1974, Tokyo, Japan" Affected taxa: Aeromonas, Beneckea, Chromobacterium, Comamonas, Oceanomonas (sic), Pasteurella, Photobacterium, Plesiomonas corrig., Pseudomonas, Vibrio.
Meeting report: Int J Syst Bacteriol 1972; 22:189-190. Note: "International Committee on Systematic Bacteriology. Subcommittee on taxonomy of vibrios. Minutes of the meeting, 22 July 1971, Washington, D.C" Affected taxa: Aeromonas, Plesiomonas corrig., Vibrio.

All prokaryotes

Minimal standards: Int J Syst Evol Microbiol 2010; 60:249-266. Note: Not a minimal standard, but a standard reference work. Affected taxa: Bacteria, "Archaea", "Bacteria", "Bacteria".
Meeting report: Int J Syst Evol Microbiol 2019; 69:2172-2173. Note: "International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of open and closed meetings, 19 July 2016, Dublin, Ireland" Affected taxa: Bifidobacterium, Lactobacillus, Lactococcus, Leuconostoc, Neoscardovia.
Meeting report: Int J Syst Evol Microbiol 2019; 69:1521-1523. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of closed and open meetings, 3 September 2018, Berlin, Germany" Affected taxa: Lactobacillaceae, Leuconostocaceae, Alloscardovia, Bifidobacterium, Galliscardovia, Lactobacillus, Weissella.
Meeting report: Int J Syst Evol Microbiol 2012; 62:2546-2548. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of the meetings, 31 August 2011, Egmond aan Zee, The Netherlands" Affected taxa: Bifidobacteriaceae, Carnobacteriaceae, Enterococcaceae, Lactobacillaceae, Leuconostocaceae, Bifidobacterium, Carnobacterium, Eggerthia, Fructobacillus, Lactobacillus, Leuconostoc, Paralactobacillus, Pediococcus, Scardovia, Tetragenococcus, Vagococcus, Weissella, Lactobacillales.
Minimal standards: Int J Syst Evol Microbiol 2009; 59:2114-2121. Note: The proposals have been endorsed by the Subcommittee on the Taxonomy of the Genus Bacillus and Related Organisms of the International Committee on Systematics of Prokaryotes. The scope of organisms has also been described as "aerobic, endospore-forming bacteria". Affected taxa: Bacillaceae, Bacillus.
Meeting report: Int J Syst Evol Microbiol 2005; 55:977-979. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of the genus Bacillus and related organisms. Minutes of the meeting, 30 July 2002, Paris, France" Affected taxa: Bacillus, Paenibacillus, Thermobacillus.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1409. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of genus Bacillus and related organisms. Minutes of the meeting, 18 August 1999, Sydney, Australia" Affected taxa: Bacillus, Paenibacillus, Virgibacillus.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1391-1392. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of the meetings, 4 and 6 July 1994, Prague, Czech Republic" Affected taxa: Bifidobacterium, Lactobacillus, Leuconostoc, Pediococcus, Tetragenococcus, Weissella.
Meeting report: Int J Syst Evol Microbiol 2020; 70:2949-2951. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms Minutes of the closed meeting, 20 June 2019, Prague, Czech Republic" Affected taxa: Bifidobacterium, Lactobacillus.
Minimal standards: Int J Syst Evol Microbiol 2014; 64:1434-1451. Note: "Recommended minimal standards for description of new taxa of the genera Bifidobacterium, Lactobacillus and related genera" Affected taxa: Bifidobacteriaceae, Lactobacillaceae, Bifidobacterium, Lactobacillus.
Meeting report: Int J Syst Evol Microbiol 2006; 56:2501-2503. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Bifidobacterium, Lactobacillus and Related Organisms. Minutes of the meetings, 1 and 2 April 2005, Stuttgart-Hohenheim, Germany" Affected taxa: Aeriscardovia, Aerococcus, Bifidobacterium, Carnobacterium, Desemzia, Enterococcus, Isobaculum, Lactobacillus, Leuconostoc, Olsenella, Pediococcus, Tetragenococcus, Vagococcus, Weissella.
Meeting report: Int J Syst Evol Microbiol 2001; 51:259-261. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of the meetings, 22 and 23 September 1999, Veldhoven, The Netherlands" Affected taxa: Bifidobacteriaceae, Aerococcus, Bifidobacterium, Gardnerella, Lactobacillus, Leuconostoc, Oenococcus, Pediococcus, Tetragenococcus, Trichococcus, Weissella, Bifidobacteriales.

Brucella

Meeting report: Int J Syst Evol Microbiol 2006; 56:1167-1168. Note: "International Committee on Systematic Bacteriology, Subcommittee on the taxonomy of Brucella correspondence report (interim report 1991-1993)" Affected taxa: Agrobacterium, Brucella, Francisella, Pseudomonas, Rickettsia, "Candidatus Rickettsia", Vibrio, Yersinia.
Minimal standards: Int J Syst Bacteriol 1975; 25:243. Note: "Erratum: Proposal for Minimal Standards for Descriptions of New Species and Biotypes of the Genus Brucella" Affected taxa: Brucella.
Minimal standards: Int J Syst Bacteriol 1975; 25:83-89. Note: "Proposal for Minimal Standards for Descriptions of New Species and Biotypes of the Genus Brucella" Affected taxa: Brucella.
Meeting report: Int J Syst Evol Microbiol 2017; 67:5315-5316. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Campylobacter and Related Bacteria. Minutes of the meetings, September 15th and 18th 2013, Aberdeen, Scotland" Affected taxa: Arcobacter, Campylobacter, Helicobacter.
Meeting report: Int J Syst Evol Microbiol 2017; 67:5312-5314. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Campylobacter and Related Bacteria. Minutes of the meetings, August 27 and August 31 2011, Vancouver, Canada" Affected taxa: Campylobacteraceae, Helicobacteraceae, Campylobacter, Helicobacter.
Minimal standards: Int J Syst Evol Microbiol 2017; 67:5296-5311. Note: "Minimal standards for describing new species belonging to the families Campylobacteraceae and Helicobacteraceae: Campylobacter, Arcobacter, Helicobacter and Wolinella spp." Affected taxa: Campylobacteraceae, Helicobacteraceae.
Meeting report: Int J Syst Evol Microbiol 2011; 61:2559-2560. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Campylobacter and related bacteria: Minutes of the closed Meeting, 2 September 2009, Niigata, Japan" Affected taxa: Campylobacteraceae, Helicobacteraceae, Arcobacter, Campylobacter, Helicobacter.
Meeting report: Int J Syst Evol Microbiol 2004; 54:291-292. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Campylobacter and related bacteria. Minutes of the meeting, 31 July 2002, Paris, France" Affected taxa: Campylobacteraceae, Arcobacter, Helicobacter.
Meeting report: Int J Syst Evol Microbiol 2002; 52:2339-2341. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Campylobacter and related bacteria. Minutes of the meetings, 2 and 4 September 2001, Freiburg, Germany" Affected taxa: Campylobacter, Dehalospirillum, "Flexispira", Helicobacter, Thiomicrospira.
Minimal standards: Int J Syst Evol Microbiol 2000; 50:2231-2237. Note: "Recommended minimal standards for describing new species of the genus Helicobacter" Affected taxa: Helicobacter.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1401-1403. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Campylobacter and related bacteria. Minutes of the meetings, 13 and 16 September 1999, Baltimore, USA" Affected taxa: Campylobacteraceae, "Flexispira", Helicobacter, Sulfurospirillum.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1399-1400. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Campylobacter and related bacteria. Minutes of the meeting, 2 September 1998, Budapest, Hungary" Affected taxa: Campylobacter, Helicobacter.
Minimal standards: Int J Syst Bacteriol 1994; 44:842-845. Note: "Proposal of Minimal Standards for Describing New Species of the Family Campylobacteraceae" Affected taxa: Campylobacteraceae.

Chlamydiae

Meeting report: Int J Syst Evol Microbiol 2019; 69:3654-3656. Note: "International Committee on Systematics of Prokaryotes (ICSP) Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 20 March 2019, Seattle, WA, USA" Affected taxa: Chlamydiae, Chlamydiia, Chlamydiaceae, "Candidatus Rhabdochlamydiaceae", Chlamydia, Chlamydophila, Chlamydiales, Parachlamydiales, "Chlamydiae", "Verrucomicrobia", "Verrucomicrobia", "Verrucomicrobia", "Verrucomicrobiota".
Meeting report: Int J Syst Evol Microbiol 2019; 69:2606-2608. Note: "International Committee on Systematics of Prokaryotes (ICSP) Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 5 July 2018, Woudschoten, Zeist, The Netherlands" Affected taxa: Chlamydiia, "Candidatus Actinochlamydia", Chlamydia, Chlamydiales, Parachlamydiales.
Meeting report: Int J Syst Evol Microbiol 2018; 68:3683-3684. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 7 September 2016, Oxford, UK" Affected taxa: Chlamydia, Chlamydiales, Parachlamydiales.
Meeting report: Int J Syst Evol Microbiol 2018; 68:3369-3370. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 9 April 2017, Charlotte, USA" Affected taxa: [Neptunochlamydia], [Protochlamydia], "Candidatus Similichlamydia".
Meeting report: Int J Syst Evol Microbiol 2017; 67:514-515. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 4 July 2012, Amsterdam, Netherlands" Affected taxa: Chlamydia, "Estrella", [Metachlamydia].
Meeting report: Int J Syst Evol Microbiol 2017; 67:512-513. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 31 March 2015, New Orleans, USA" Affected taxa: [Amphibiichlamydia], "Candidatus Similichlamydia", [Syngnamydia], Chlamydiales.
Meeting report: Int J Syst Evol Microbiol 2017; 67:510-511. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Chlamydiae. Minutes of the closed meeting, 21 March 2013, San Antonio, Texas, USA" Affected taxa: [Mesochlamydia], "Candidatus Parilichlamydia", [Renichlamydia].
Meeting report: Int J Syst Evol Microbiol 2010; 60:2694. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of the Chlamydiae: minutes of the closed meeting, 21 June 2010, Hof bei Salzburg, Austria" Affected taxa: Chlamydiaceae, Chlamydia, Chlamydophila, [Metachlamydia].
Meeting report: Int J Syst Evol Microbiol 2010; 60:2691-2693. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of the Chlamydiae: minutes of the inaugural closed meeting, 21 March 2009, Little Rock, AR, USA" Affected taxa: Chlamydia, Chlamydophila, "Criblamydia", "Candidatus Fritschea", Parachlamydia, [Protochlamydia], Simkania, Waddlia.

Enterobacteriaceae

Meeting report: Int J Syst Evol Microbiol 2009; 59:2643-2645. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Enterobacteriaceae. Minutes of the meetings, 7 August 2008, Istanbul, Turkey" Affected taxa: Enterobacteriaceae, Enterobacteriaceae, Cronobacter, "Cronobacter", Enterobacter, Escherichia, Hafnia, Obesumbacterium, Salmonella, Serratia.

Gram-negative anaerobic rods

Meeting report: Int J Syst Evol Microbiol 2008; 58:1051-1055. Note: "International Committee on Systematics of Prokaryotes; Subcommittee on the taxonomy of Gram-negative anaerobic rods" Affected taxa: Bacteroidaceae, Porphyromonadaceae, Prevotellaceae, Bacillus, Bacteroides, Clostridium, Dysgonomonas, Fusobacterium, Jonquetella, Parabacteroides, Porphyromonas, Prevotella.
Meeting report: Int J Syst Evol Microbiol 2003; 53:923-924. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Gram-negative anaerobic rods. Minutes of the meeting, 29 July 2002, Paris, France" Affected taxa: Bacteroidaceae, Bacteroides, Cetobacterium, Clostridium, Fusobacterium, Leptotrichia, Porphyromonas, Prevotella, Rikenella, Sneathia, Streptobacillus, Tannerella.

Halobacteriaceae

Meeting report: Int J Syst Evol Microbiol 2016; 66:4291-4295. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae and subcommittee on the taxonomy of Halomonadaceae. Minutes of the joint open meeting, 23 May 2016, San Juan, Puerto Rico" Affected taxa: Haloarculaceae, Halobacteriaceae, Halococcaceae, Haloferacaceae, Halomonadaceae, Halorubraceae, Natrialbaceae, Carnimonas, Chromohalobacter, Cobetia, Haladaptatus, Halanaeroarchaeum, Halapricum, Halarchaeum, Haloarchaeobius, Haloarcula, Halobacterium, Halobellus, Halocalculus, Halococcus, Haloferax, Halogeometricum, Halolamina, Halomicroarcula, Halomonas, Haloparvum, Halopenitus, Haloplanus, Halorhabdus, Halorientalis, Halorubrum, Halorussus, Halosiccatus, Halosimplex, Halostagnicola, Halostella, Halotalea, Halovarius, Halovenus, Halovivax, Kushneria, Larsenimonas, Natrialba, Natribaculum, Salinarchaeum, Salinicola, Haloferacales.
Meeting report: Int J Syst Evol Microbiol 2016; 66:4289. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the closed meeting, 23 May 2016, San Juan, Puerto Rico" Affected taxa: Halobacteriaceae, Halomonadaceae.
Meeting report: Int J Syst Evol Microbiol 2014; 64:3915-3918. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae and Subcommittee on the taxonomy of Halomonadaceae: minutes of the joint open meeting, 31 July 2014, Montreal, Canada" Affected taxa: Halobacteriaceae, Halomonadaceae, Halalkalicoccus, Halapricum, Halarchaeum, Haloarchaeobius, Halobellus, [Halobonum], Halococcus, [Haloectosymbiotes], Haloferax, Halohasta, Halolamina, Halomicroarcula, Halomonas, Halopelagius, Halopenitus, Halopiger, Haloplanus, Halorientalis, Halorubellus, Halorubrum, Halorussus, Halosimplex, Natronoarchaeum, Natronobacterium, Natronomonas, Salinarchaeum, Salinicola, Salinigranum, Salinirubrum corrig..
Meeting report: Int J Syst Evol Microbiol 2014; 64:3913. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae: minutes of the closed meeting, 31 July 2014, Montreal, Canada" Affected taxa: Halobacteriaceae, Halomonadaceae, Halohasta, Halomicroarcula.
Meeting report: Int J Syst Evol Microbiol 2011; 61:2792-2795. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae and Subcommittee on the taxonomy of Halomonadaceae Minutes of the joint open meeting, 6 September 2011, Sapporo, Japan" Affected taxa: Halobacteriaceae, Halomonadaceae, Aidingimonas, Halarchaeum, Haloarchaeobius, Haloarcula, Halobacterium, Halobellus, Halogeometricum, Halogranum, Halolamina, Halomarina, Halomicrobium, Halomonas, Halopelagius, Haloplanus, Halorientalis, Halorubrum, Halosarcina, Halostagnicola, Haloterrigena, Halovenus, Kushneria, Natronoarchaeum, Natronorubrum, Salarchaeum, Halobacteriales.
Meeting report: Int J Syst Evol Microbiol 2008; 58:2465-2467. Note: On 7 August 2008, the subcommittee on the taxonomy of Halobacteriaceae discussed whether any changes in the Recommended Minimal Standards document are necessary at present. It was recommended that the current recommendation for PCR amplification of 16S rRNA genes followed by sequencing of the product should be replaced by cloning and sequencing of a number of 16S rRNA gene clones, this is in view of the presence of multiple copies of the gene with different sequences in many members of the family. No need was felt for additional changes to the Recommended Minimal Standards. Affected taxa: Halobacteriaceae, Halobacteriales.
Meeting report: Int J Syst Evol Microbiol 2002; 52:289-290. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Halobacteriaceae" Affected taxa: Halobacteriaceae, Haloarcula, Halobacterium, Halococcus, Haloferax, Halomicrobium, Halorhabdus, Haloterrigena, Natrialba, Natrinema, Natronobacterium, Halobacteriales.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1405-1407. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the meetings, 16 August 1999, Sydney, Australia" Affected taxa: Halobacteriaceae, Haloarcula, Halobacterium, Halococcus, Haloferax, Halogeometricum, Halorhabdus, Halorubrum, Halosimplex, Haloterrigena, Natrialba, Natrinema, Natronobacterium, Natronomonas, Natronorubrum, Halobacteriales.
Minimal standards: Int J Syst Bacteriol 1997; 47:233-238. Note: "Proposed Minimal Standards for Description of New Taxa in the Order Halobacteriales" Affected taxa: Halobacteriaceae, Halobacteriales.

Halomonadaceae

Meeting report: Int J Syst Evol Microbiol 2019; 69:3657-3661. Note: "International Committee on Systematics of Prokaryotes subcommittee on the taxonomy of Halobacteria and subcommittee on the taxonomy of Halomonadaceae. Minutes of the joint open meeting, 26 June 2019, Cluj-Napoca, Romania" Affected taxa: Halobacteria, Haloarculaceae, Halobacteriaceae, Halomonadaceae, Natrialbaceae, Halalkalicoccus, Haloarcula, Halobacterium, Halobium, [Halobonum], Halococcoides, Halococcus, Halodesulfurarchaeum, [Haloectosymbiotes], Haloferax, Halomarina, Halomonas, Halonotius, Haloplanus, Haloprofundus, Halorientalis, Halorubrum, Halorussus, Haloterrigena, Kushneria, Natrarchaeobius, Natrinema, Natronoarchaeum, Natronobiforma, Salinarchaeum, Salinicola, Salinirubellus, Salinirussus, Saliphagus.
Meeting report: Int J Syst Evol Microbiol 2017; 67:4279-4283. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteria and Subcommittee on the taxonomy of Halomonadaceae. Minutes of the joint open meeting, 11 July 2017, Valencia, Spain" Affected taxa: Haloarculaceae, Halobacteriaceae, Halococcaceae, Haloferacaceae, Halomonadaceae, Halorubraceae, Natrialbaceae, Halanaeroarchaeum, Haloarcula, Halobaculum, Halobium, Halococcus, Halodesulfurarchaeum, Haloferax, Halolamina, Halomarina, Halomonas, Haloparvum, Halopiger, Haloprofundus, Halorhabdus, Halorubrum, Halorussus, Halostella, Haloterrigena, Larsenimonas, Natrinema, Natronoarchaeum, Natronomonas, Pistricoccus, Salinigranum.
Meeting report: Int J Syst Evol Microbiol 2016; 66:4290. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halomonadaceae, Minutes of the closed meeting, 23 May 2016, San Juan, Puerto Rico" Affected taxa: Halobacteriaceae, Halomonadaceae.
Meeting report: Int J Syst Evol Microbiol 2014; 64:3914. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halomonadaceae: minutes of the closed meeting, 31 July 2014, Montreal, Canada" Affected taxa: Halobacteriaceae, Halomonadaceae, Halomicroarcula, Halomonas.
Meeting report: Int J Syst Evol Microbiol 2010; 60:2257-2259. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae and Subcommittee on the taxonomy of Halomonadaceae. Minutes of the meeting 30 June 2010, Beijing, China" Affected taxa: Halobacteriaceae, Halomonadaceae, Cobetia, Haladaptatus, Halarchaeum, Haloarcula, Halobacillus, Halobacterium, Halogeometricum, Halogranum, Halomarina, Halomicrobium, Halomonas, Halonotius, Halopelagius, Halopiger, Haloplanus, Halorubrum, Halosarcina, Halostagnicola, Haloterrigena, Kushneria, Natrinema, Natronoarchaeum, Natronomonas, Natronorubrum, Salinicola, Halobacteriales.
Minimal standards: Int J Syst Evol Microbiol 2008; 58:2673. Note: Erratum for the publication on minimal standards, with minor corrections. Affected taxa: Halomonadaceae.
Minimal standards: Int J Syst Evol Microbiol 2007; 57:2436-2446. Note: The proposals presented in the paper by Arahal et al. have been endorsed by the International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halomonadaceae. Affected taxa: Halomonadaceae.

Leptospiraceae

Meeting report: Int J Syst Evol Microbiol 2018; 68:3362. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Leptospiraceae. Minutes of the closed meeting, 28 November 2017, Palmerston North, New Zealand" Affected taxa: Leptospiraceae, Leptospira.
Meeting report: Int J Syst Evol Microbiol 2016; 66:523. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Leptospiraceae Minutes of the closed meeting, 8 October 2015, Semarang, Indonesia" Affected taxa: Leptospiraceae, Leptospira.
Meeting report: Int J Syst Bacteriol 1992; 42:330-334. Note: "INTERNATIONAL COMMITTEE ON SYSTEMATIC BACTERIOLOGY, SUBCOMMITTEE ON THE TAXONOMY OF LEPTOSPIRA: Minutes of the meetings, 13 and 15 September 1990, Osaka, Japan" Affected taxa: Leptospiraceae, Leptonema, Leptospira, Spirochaeta.

Methanoarchaea

Meeting report: Int J Syst Evol Microbiol 2004; 54:289. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of methanoarchaea. Minutes of the closed meeting, 19 May 2003, Washington, DC, USA"
Minimal standards: Int J Syst Bacteriol 1988; 38:212-219. Note: The Subcommittee on the Taxonomy of Methanoarchaea used to be called Subcommittee for Taxonomy of Methanogenic Bacteria. Affected taxa: Methanosarcinaceae, Methanobacterium, Methanobrevibacter, Methanococcus, Methanogenium, Methanohalophilus, Methanolobus, Methanomicrobium, Methanoplanus, Methanosarcina, Methanosphaera, Methanothermus, Methanothrix.

Micrococcineae

Meeting report: Int J Syst Evol Microbiol 2017; 67:2068-2069. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of the suborder Micrococcineae Minutes of the meeting, 29 July 2014, Montreal, Canada" Affected taxa: Bogoriellaceae, Brevibacteriaceae, Cellulomonadaceae, Demequinaceae, Dermacoccaceae, Microbacteriaceae, Micrococcaceae, Promicromonosporaceae, Micrococcineae.
Meeting report: Int J Syst Evol Microbiol 2012; 62:755. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of the suborder Micrococcineae Minutes of the meeting, 9 September 2011, Sapporo, Japan" Affected taxa: Intrasporangium, Koreibacter, Micrococcineae.
Minimal standards: Int J Syst Evol Microbiol 2009; 59:1823-1849. Note: For the Subcommittee on the taxonomy of the suborder Micrococcineae of the International Committee on Systematics of Prokaryotes. Affected taxa: Micrococcineae.

Mollicutes

Meeting report: Int J Syst Evol Microbiol 2019; 69:2169-2171. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Mollicutes: Minutes of the closed meeting, 8 July 2018, Portsmouth, New Hampshire, USA" Affected taxa: Metamycoplasmataceae, Mycoplasmoidaceae, Mesomycoplasma, Mycoplasma, Mycoplasmoides, "Candidatus Phytoplasma", Entomoplasmatales, Mycoplasmoidales.
Meeting report: Int J Syst Evol Microbiol 2017; 67:2482-2484. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Mollicutes. Minutes of the closed meeting, 3rd July 2016, Brisbane, Australia" Affected taxa: Mollicutes, "Candidatus Izimaplasma", "Candidatus Moeniiplasma", Mycoplasma, "Candidatus Phytoplasma", Spiroplasma, [Vermiplasma].
Meeting report: Int J Syst Evol Microbiol 2014; 64:3904-3906. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Mollicutes: minutes of the meetings (closed and open), 1 and 5 June 2014, Blumenau SC, Brazil" Affected taxa: Erysipelotrichia, Acholeplasmataceae, Entomoplasmataceae, Spiroplasmataceae, [Hepatoplasma], Mycoplasma, "Candidatus Phytoplasma", Ureaplasma, Acholeplasmatales, Anaeroplasmatales, Entomoplasmatales, Mycoplasmatales.
Meeting report: Int J Syst Evol Microbiol 2013; 63:2361-2364. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Mollicutes: Minutes of the meetings, July 15th and 19th 2012, Toulouse, France" Affected taxa: "Candidatus Bacilloplasma", Bartonella, Eperythrozoon, Haloplasma, [Hepatoplasma], Mycoplasma, "Candidatus Phytoplasma", Thermoplasma, Ureaplasma, Anaeroplasmatales.
Minimal standards: Int J Syst Evol Microbiol 2007; 57:2703-2719. Note: "Revised minimal standards for description of new species of the class Mollicutes (division Tenericutes)" Affected taxa: Mollicutes.
Minimal standards: Int J Syst Evol Microbiol 2007; 57:201-206. Note: "Evolution and devolution of minimal standards for descriptions of species of the class Mollicutes: analysis of two Spiroplasma descriptions" Affected taxa: Mollicutes.
Meeting report: Int J Syst Evol Microbiol 2001; 51:2227-2230. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of mollicutes. Minutes of the interim meetings, 13 and 19 July 2000, Fukuoka, Japan" Affected taxa: Mollicutes, Entomoplasmataceae, Spiroplasmataceae, Acholeplasma, Entomoplasma, Eperythrozoon, Haemobartonella, Mycoplasma, "Candidatus Phytoplasma", Spiroplasma, Ureaplasma, Entomoplasmatales.
Meeting report: Int J Syst Evol Microbiol 2000; 50:1393-1397. Note: "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Mollicutes. Minutes of the meetings, 21 and 28 July 1998, Sydney, Australia" Affected taxa: Mollicutes, Anaplasmataceae, Entomoplasmataceae, Spiroplasmataceae, Acholeplasma, Entomoplasma, Eperythrozoon, Haemobartonella, Mesoplasma, Mycoplasma, "Candidatus Phytoplasma", Spiroplasma, Ureaplasma, Entomoplasmatales, Rickettsiales.
Minimal standards: Int J Syst Bacteriol 1995; 45:605-612. Note: R.F. Whitcomb (Chair), J.G. Tully (Secretary), J.M. Bové, J.M. Badbury, G. Christiansen, I. Kahane, B.C. Kirkpatrick, F. Laigret, R.H. Leach, H.C. Neimark, J.D. Pollack, S. Razin, B.B. Sears, and D. Taylor-Robinson. Affected taxa: Mollicutes.
Minimal standards: Int J Syst Bacteriol 1979; 29:172-180. Note: E.A. Freundt (Chairman), R.F. Whitcomb (Secretary), M.F. Barile, J.M. Bové, G.S. Cottew, H. Ernø, R. Lemcke, J. Maniloff, H. Neimark, S. Razin, D. Taylor-Robinson, J.G. Tully and P. Whittlestone. Affected taxa: Mollicutes.
Minimal standards: Int J Syst Bacteriol 1972; 22:184-188. Note: The scope of the subcommittee was changed from Mycoplasmatales to Mollicutes. Affected taxa: Mollicutes.

Mycobacterium

Minimal standards: Int J Syst Bacteriol 1992; 42:315-323. Note: The Subcommittee for Taxonomy of the genus Mycobacterium used to be called Subcommittee for Taxonomy of the Mycobacteria. Affected taxa: Mycobacteriaceae, Mycobacterium.

Neisseriaceae

Minimal standards: Int J Syst Bacteriol 1976; 26:92-96. Note: The Subcommittee on Taxonomy of Neisseriaceae used to be called Subcommittee on Moraxella and Allied Bacteria. Affected taxa: Neisseriaceae, Moraxella.

Pasteurellaceae

Meeting report: Int J Syst Evol Microbiol 2019; 69:871-872. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Pasteurellaceae Minutes of the Meetings, 9 October 2018, Prato, Italy" Affected taxa: Pasteurellaceae, Actinobacillus, Conservatibacter, Cricetibacter, Glaesserella, Testudinibacter.
Meeting report: Int J Syst Evol Microbiol 2012; 62:257-258. Note: "International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of Pasteurellaceae: minutes of the meetings, 25 August 2011, Elsinore, Denmark" Affected taxa: Pasteurellaceae, Actinobacillus, Basfia, Bisgaardia, Chelonobacter, Haemophilus, Mannheimia, Necropsobacter, Pasteurella.
Minimal standards: Int J Syst Evol Microbiol 2007; 57:166-178. Note: Former member of the ICSP Subcommittee on the taxonomy of Pasteurellaceae Mogens Kilian and present members Patrick Blackall, Robert Davies, Olivier Gaillot, Thomas Inzana, Reinier Mutters and Niels Nørskov-Lauritsen, although not co-authors of the paper, taked part in these minimal standards. Affected taxa: Pasteurellaceae.

Phototrophic bacteria

Meeting report: Int J Syst Evol Microbiol 2014; 64:3910-3912. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of phototrophic bacteria: minutes of the closed online meeting, 10-30 June 2014" Affected taxa: "Cyanobacteria", "Cyanobacteria", "Cyanobacteria".
Meeting report: Int J Syst Evol Microbiol 2014; 64:3907-3909. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of phototrophic bacteria: minutes of the meetings, 11 August 2009, Montreal, Canada" Affected taxa: Afifella, Allochromatium, Chlorobaculum, Halochromatium, Marichromatium, Phaeospirillum, Prosthecochloris, Rhodobacter, Rhodobium, Rhodoblastus, Rhodoferax, Rhodoplanes, Rhodospirillum, Rhodovastum, Rhodovulum, Roseospira, Thiocapsa, Thiohalocapsa, Thiophaeococcus, Thiorhodococcus, "Cyanobacteria", "Cyanobacteria", "Cyanobacteria".
Minimal standards: Int J Syst Evol Microbiol 2004; 54:1415-1421. Note: The recommended standards were supported by the Subcommittee on the taxonomy of phototrophic bacteria of the International Committee on Systematics of Prokaryotes. Affected taxa: Chlorobiaceae, Heliobacteriaceae, Chlorobiales, "Chlorobiales", Chloroflexales.
Meeting report: Int J Syst Evol Microbiol 2002; 52:2335-2336. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of phototrophic bacteria. Minutes of the Meetings, 28 August 2000, Barcelona, Spain" Affected taxa: Chlorobiaceae, Chloroflexaceae, Halobacteriaceae, Allochromatium, Amoebobacter, Blastomonas, Chlorobium, Chloroflexus, Chromatium, "Citromicrobium", Craurococcus, Ectothiorhodospira, Erythromonas, Halochromatium, Heliophilum, Isochromatium, Lamprocystis, Marichromatium, Pfennigia, Phaeospirillum, Rhodobacter, Rhodospirillum, Rhodothalassium, Rhodovibrio, Rhodovulum, Roseateles, Roseibium, Roseiflexus, Roseivivax, Roseobacter, Roseospirillum, Roseovarius, Rubrimonas, Ruegeria, Thioalkalicoccus corrig., Thiocapsa, Thiococcus, Thiocystis, Thiorhodospira, Prochlorales.
Meeting report: Int J Syst Bacteriol 1999; 49:925-926. Note: "International Committee on Systematic Bacteriology - Subcommittee on the taxonomy of phototrophic bacteria. Minutes of the meetings, 10 September 1997, Vienna, Austria" Affected taxa: Chlorobiaceae, Chloroflexaceae, Chromatiaceae, Ectothiorhodospiraceae, Blastochloris, Chlorobium, Chromatium, Ectothiorhodospira, Erythrobacter, Erythromicrobium, Halorhodospira, Heliobacterium, Heliophilum, Prosthecochloris, Rhodobacter, Rhodobium, Rhodocista, Rhodoplanes, Rhodopseudomonas, Rhodospira, Rhodospirillum, Roseobacter, Thiocapsa, Thiopedia, Thiorhodococcus, Thiospirillum.

Pseudonocardineae

Meeting report: Int J Syst Evol Microbiol 2004; 54:283. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of the suborder Pseudonocardineae. Minutes of the closed meeting, 31 July 2002, Paris, France" Affected taxa: Actinosynnemataceae, Pseudonocardiaceae, Actinokineospora, Crossiella, Lentzea, Saccharothrix, Pseudonocardineae.

Rhizobia and agrobacteria

Meeting report: Int J Syst Evol Microbiol 2020; 70:3563-3571. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Rhizobia and Agrobacteria Minutes of the closed meeting by videoconference, 17 July 2019" Affected taxa: Agrobacterium, Allorhizobium, Bosea, Bradyrhizobium, Cupriavidus, Devosia, Ensifer, Mesorhizobium, Methylobacterium, Microvirga, Ochrobactrum, Paraburkholderia, Pseudorhizobium, Rhizobium.
Minimal standards: Int J Syst Evol Microbiol 2019; 69:1852-1863. Note: "Minimal standards for the description of new genera and species of rhizobia and agrobacteria" Affected taxa: Agrobacterium, Rhizobium.
Meeting report: Int J Syst Evol Microbiol 2019; 69:1835-1840. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Rhizobia and Agrobacteria Minutes of the meeting by video conference, 11 July 2018" Affected taxa: Burkholderiaceae, Rhizobiaceae, Agrobacterium, Bradyrhizobium, Ensifer, Labrys, Mesorhizobium, Methylorubrum, Micrococcus, Microvirga, Neorhizobium, Paraburkholderia, Pararhizobium, Phyllobacterium, Rhizobium, Sinorhizobium.
Meeting report: Int J Syst Evol Microbiol 2018; 68:3363-3368. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of rhizobia and agrobacteria Minutes of the closed meeting, Granada, 4 September 2017" Affected taxa: Rhizobiaceae, Agrobacterium, Allorhizobium, Bosea, Bradyrhizobium, Ciceribacter, Mesorhizobium, Microvirga, Neorhizobium, Pararhizobium, Rhizobium, Sinorhizobium.
Meeting report: Int J Syst Evol Microbiol 2017; 67:2485-2494. Note: "International Committee on Systematics of Prokaryotes Subcommittee for the Taxonomy of Rhizobium and Agrobacterium Minutes of the meeting, Budapest, 25 August 2016" Affected taxa: Rhizobiaceae, Agrobacterium, Allorhizobium, Blastobacter, Bosea, Bradyrhizobium, Burkholderia, Caballeronia, Ensifer, Mesorhizobium, Microvirga, Neorhizobium, Paraburkholderia, Pararhizobium, Phyllobacterium, Rhizobium, Robbsia, Sinorhizobium.
Meeting report: Int J Syst Evol Microbiol 2017; 67:516-520. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Agrobacterium and Rhizobium Minutes of the meeting, 7 September 2014, Tenerife, Spain" Affected taxa: Agromonas, Aminobacter, Azorhizobium, Blastobacter, Bosea, Bradyrhizobium, Burkholderia, Ciceribacter, Ensifer, Mesorhizobium, Microvirga, Ochrobactrum, Phyllobacterium, Rhizobium.
Meeting report: Int J Syst Evol Microbiol 2011; 61:3089-3093. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Agrobacterium and Rhizobium: minutes of the meeting, 7 September 2010, Geneva, Switzerland" Affected taxa: Rhizobiaceae, Agrobacterium, Allorhizobium, Blastobacter, Bradyrhizobium, Ensifer, Rhizobium, Sinorhizobium.
Meeting report: Int J Syst Evol Microbiol 2009; 59:921-922. Note: "International committee on systematics of prokaryotes; subcommittee on the taxonomy of agrobacterium and rhizobium: minutes of the meetings, 31 August 2008, Gent, Belgium" Affected taxa: Burkholderia, Ensifer, Mesorhizobium, Ochrobactrum, Phyllobacterium, Rhizobium, Shinella, Sinorhizobium.
Meeting report: Int J Syst Evol Microbiol 2002; 52:2337. Note: "International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Agrobacterium and Rhizobium. Minutes of the meeting, 4 July 2001, Hamilton, Canada" Affected taxa: Agrobacterium, Ensifer, Rhizobium, Sinorhizobium.
Minimal standards: Int J Syst Bacteriol 1991; 41:582-587. Note: The scope of organisms is also known as "Root- and Stem-Nodulating Bacteria". Affected taxa: Agrobacterium, Rhizobium.

Staphylococci and streptococci

Meeting report: Int J Syst Evol Microbiol 2003; 53:915-917. Note: According to the "Subcommittee on the Taxonomy of Staphylococci and Streptococci" some of the recommendations stated in the "Recommended minimal standards" are possibly impractical in certain cases, particularly the requirement for peptidoglycan types. Affected taxa: Staphylococcus, Streptococcus.
Meeting report: Int J Syst Evol Microbiol 2001; 51:717-718. Note: "International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of staphylococci and streptococci. Minutes of the meetings, 17 September 1996, Institut Pasteur, Paris, France" Affected taxa: Leuconostoc, Macrococcus, Staphylococcus, Streptococcus.
Minimal standards: Int J Syst Bacteriol 1999; 49:489-502. Note: "Recommended minimal standards for description of new staphylococcal species" Affected taxa: Staphylococcus.

Streptomyces

Minimal standards: Int J Syst Bacteriol 1966; 16:313-340. Note: Not a minimal standard, but a standard reference work. Affected taxa: Streptomyces.

Xanthomonas

Minimal standards: Int J Syst Bacteriol 1991; 41:172-177. Note: "Indication of the Need for Minimal Standards for the Genus Xanthomonas" Affected taxa: Xanthomonas.