- Volume 38, Issue 1, 1988
Volume 38, Issue 1, 1988
- Original Papers Relating To Systematic Bacteriology
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Isolation and Properties of Clostridium thermocellum from Icelandic Hot Springs
More LessSix strains of Clostridium thermocellum were isolated from hot springs near Hveragerthi, Iceland, and compared with strains of this and other species of clostridia. Deoxyribonucleic acid homology showed that the strains of this species formed a genetic species distinct from all others.
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Methanohalophilus mahii gen. nov., sp. nov., a Methylotrophic Halophilic Methanogen †
More LessA new genus of methanogenic bacteria (Methanohalophilus) comprising a single species, Methanohalophilus mahii sp. nov., is described. The microorganisms of this genus require sodium chloride concentrations in the moderately halophilic range of 1.0 to 2.5 M for optimal growth and methanogenesis. Methanol and methylamines are the substrates that are utilized for growth. M. mahii is a methanogenic coccoid microorganism isolated from the sediments of the Great Salt Lake. The optimum temperature and salinity for growth and methanogenesis were 37°C and 2.0 M NaCI, respectively. The description is based on a single strain, strain SLP (= ATCC 35705), which is thus the type strain.
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Three New Methylobacterium Species: M. rhodesianum sp. nov., M. zatmanii sp. nov., and M. fujisawaense sp. nov.
More LessThree new Methylobacterium species (M. zatmanii, M. rhodesianum, and M. fujisawaense) are proposed on the basis of deoxyribonucleic acid-deoxyribonucleic acid homology. Strains are assigned to these and other species of Methylobacterium on the basis of both the homology data and previously published phenotypic data.
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Proposal for Reclassification of Bacteroides asaccharolyticus, Bacteroides gingivalis, and Bacteroides endodontalis in a New Genus, Porphyromonas
More LessThe asaccharolytic, pigmented Bacteroides, Bacteroides asaccharolyticus, Bacteroides gingivalis, and Bacteroides endodontalis, form a group of relatively homogeneous species which differ markedly in biochemical and chemical properties from the type species of Bacteroides, Bacteroides fragilis (Castellani and Chalmers), such that they should not be retained within this genus. Therefore, we propose that Bacteroides asaccharolyticus (Holdeman and Moore) Finegold and Barnes, Bacteroides gingivalis Coykendall, Kaczmarek and Slots, and Bacteroides endodontalis van Steenbergen, van Winkelhoff, Mayrand, Grenier and de Graaff be reclassified in a new genus, Porphyromonas, as Porphyromonas asaccharolytica comb. nov., Porphyromonas gingivalis comb. nov., and Porphyromonas endodontalis comb. nov., respectively.
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- Matters Relating To The International Committee On Systematic Bacteriology
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Request for an Opinion: Rejection of the Names Erwinia carnegieana Standring 1942 and Pectobacterium carnegieana (Standring 1942) Brenner, Steigerwalt, Miklos and Fanning 1973 †
More LessTwo groups of bacteria with differing characteristics are currently referred to as Erwinia carnegieana Standring 1942. However, neither group fits the original description for this bacterium. Strain NCPPB 439T (= ATCC 13452 = ATCC 33259T = ICPB EC-1 = ICPB EC-251 = PDDCC 5701T) was designated as the cotype strain for E. carnegieana and as the type strain for Pectobacterium carnegieana (Standring 1942) Brenner, Steigerwalt, Miklos and Fanning 1973 in the 1980 Approved Lists. However, all of these isolates have the characteristics of Klebsiella pneumoniae (Schroeter 1886) Trevisan 1887. No extant culture is known with the characteristics described for E. carnegieana. More recent strains isolated by us from rotting cacti are in various international collections (NCPPB 671, NCPPB 672, ICPB EC-186 [= PDDCC 1551], ICPB EC-187 [= PDDCC 1381], ICPB EC-188, ICPB EC-189, ICPB EC-190 [= PDDCC 1382], ICPB EC-191, ICPB EC-221, ICPB EC-222, ICPB EC-223). These isolates are similar to Erwinia carotovora (Jones 1901) Bergey, Harrison, Breed, Hammer and Huntoon 1923. Because of the lack of any culture of the originally described E. carnegieana, the fact that the cotype culture is a different organism, and the fact that repeated attempts to isolate the organism described as E. carnegieana from rots typical for the described disease have failed, we request an opinion that the name E. carnegieana be rejected as nomen dubium.
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Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB
The purpose of this announcement is to effect the valid publication of the following new names and new combinations under the procedure described previously [Int. J. Syst. Bacteriol. 27(3):iv, 19771. Authors and other individuals wishing to have new names and/or combinations included in future lists should send the pertinent reprint or a photocopy thereof to the IJSB (c/o ASM) for confirmation that all of the other requirements for valid publication have been met. It should be noted that the date of valid publication of these new names and combinations is the date of publication of this list, not the date of the original publication of the names and combinations. The authors of the new names and combinations are as given below, and these authors’ names will be included in the author index of the present issue and in the volume author index in this issue of the IJSB.
Inclusion of a name on these lists validates the name and thereby makes it available in bacteriological nomenclature. The inclusion of a name on this list is not to be construed as taxonomic acceptance of the taxon to which the name is applied. Indeed, some of these names may, in time, be shown to be synonyms, or the organism may be transferred to another genus, thus necessitating the creation of a new combination.
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Volumes and issues
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Volume 74 (2024)
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