Genus Halochromatium
Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow (→) only indicates the sequence of valid publication of names and does not mean that the last name in the sequence must be used (see: Introduction).
Number of species, including synonyms, cited in this file: 3
Number of subspecies, including synonyms, cited in this file: 0
Classification (Warning: see also the file "Classification of prokaryotes: Introduction").
For a detailed description of this taxon see Bergey’s Manual of Systematics of Archaea and Bacteria (BMSAB).
Halochromatium Imhoff et al. 1998, gen. nov.
Type species: ¤ Halochromatium salexigens (Caumette et al. 1989) Imhoff et al. 1998.
Recommended three-letter abbreviation: Hch. (see the file ¤ "Three-letter code for abbreviations of generic names").
Etymology: Gr. n. hals halos, salt; N.L. neut. n. Chromatium, a genus name; N.L. neut. n. Halochromatium, the Chromatium of the salt.
Valid publication: IMHOFF (J.F.), SÜLING (J.) and PETRI (R.): Phylogenetic relationships among the Chromatiaceae, their taxonomic reclassification and description of the new genera Allochromatium, Halochromatium, Isochromatium, Marichromatium, Thiococcus, Thiohalocapsa and Thermochromatium. Int. J. Syst. Bacteriol., 1998, 48, 1129-1143.
Original article in IJSEM Online
Note: Imhoff et al. propose the new genera ¤ Allochromatium, Halochromatium, ¤ Isochromatium, ¤ Marichromatium, ¤ Thiococcus, ¤ Thiohalocapsa and ¤ Thermochromatium. The names Allochromatium (Gr. adj. allos, other) and Halochromatium (Gr. n. hals, salt) are from different sources but they can be homophones. Indeed, the "H" is not pronouced in some languages such in French, Spanish, Portuguese or Italian. Moreover, in Latin, the aspirated "H" has not always been used (see: Quintilian, Institutio Oratoria, Liber primus, 5: XIX, XX, and XXI). It has been employed at the beginning of the Latin civilization but lost as early as the end of the Republic (-27) even if some educated people have retained the aspirate till Aurelius Augustinus (354 - 430). Therefore, in the spoken language the names Allochromatium and Halochromatium can be a cause of uncertainty. The proposal of the name "Dissimilichromatium" (L. adj. dissimilis, different) for Allochromatium or the proposal of the name "Salichromatium" (L. n. sal, salt) for Halochromatium would allow to avoid confusion.
→ Halochromatium Imhoff et al. 1998 emend. Anil Kumar et al. 2007.
Reference: ANIL KUMAR (P.), SRINIVAS (T.N.R.), SASIKALA (C.) and RAMANA (C.V.): Halochromatium roseum sp. nov., a non-motile phototrophic gammaproteobacterium with gas vesicles, and emended description of the genus Halochromatium. Int. J. Syst. Evol. Microbiol., 2007, 57, 2110-2113.
Original article in IJSEM Online
Halochromatium glycolicum (Caumette et al. 1997) Imhoff et al. 1998, comb. nov.
Type strain: (see also Global Catalogue of Microorganisms) SL 3201 = ATCC 700202= DSM 11080.
Sequence accession no. (16S rRNA gene) for the type strain: X93472.
Basonym: ¤ Chromatium glycolicum Caumette et al. 1997.
Etymology: N.L. n. glycol, glycol; L. suff. -icus -a -um, suffix used with the sense of pertaining to; N.L. neut. adj. glycolicum, related to the ability to use glycolate as substrate.
Valid publication: IMHOFF (J.F.), SÜLING (J.) and PETRI (R.): Phylogenetic relationships among the Chromatiaceae, their taxonomic reclassification and description of the new genera Allochromatium, Halochromatium, Isochromatium, Marichromatium, Thiococcus, Thiohalocapsa and Thermochromatium. Int. J. Syst. Bacteriol., 1998, 48, 1129-1143.
Original article in IJSEM Online
Halochromatium roseum Anil Kumar et al. 2007, sp. nov.
Type strain: (see also Global Catalogue of Microorganisms) JA134 = ATCC BAA-1363 = DSM 18859 = JCM 14151.
Sequence accession no. (16S rRNA gene) for the type strain: AM283535.
Etymology: L. neut. adj. roseum, rose-coloured, the colour of cell suspensions of the type strain.
Valid publication: ANIL KUMAR (P.), SRINIVAS (T.N.R.), SASIKALA (C.) and RAMANA (C.V.): Halochromatium roseum sp. nov., a non-motile phototrophic gammaproteobacterium with gas vesicles, and emended description of the genus Halochromatium. Int. J. Syst. Evol. Microbiol., 2007, 57, 2110-2113.
Original article in IJSEM Online
Halochromatium salexigens (Caumette et al. 1989) Imhoff et al. 1998, comb. nov. (Type species of the genus.)
Type strain: (see also Global Catalogue of Microorganisms) SG 3201 = ATCC 49190= DSM 4395.
Sequence accession no. (16S rRNA gene) for the type strain: X98597.
Basonym: ¤ Chromatium salexigens Caumette et al. 1989.
Etymology: L. n. sal salis, salt; L. part. adj. exigens, demanding; N.L. part. adj. salexigens, salt-demanding.
Valid publication: IMHOFF (J.F.), SÜLING (J.) and PETRI (R.): Phylogenetic relationships among the Chromatiaceae, their taxonomic reclassification and description of the new genera Allochromatium, Halochromatium, Isochromatium, Marichromatium, Thiococcus, Thiohalocapsa and Thermochromatium. Int. J. Syst. Bacteriol., 1998, 48, 1129-1143.
Original article in IJSEM Online