- Volume 47, Issue 1, 1997
Volume 47, Issue 1, 1997
- Original Papers Relating To Systematic Bacteriology
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Confirmation of Strain VKM B-1733 as the Type Strain of Halorubrum distributum
A. Oren, M. Kamekura and A. VentosaAbstractIn a recent paper, Zvyagintseva et al. (I. S. Zvyagintseva, E. B. Kudryashova, and E. S. Bulygina, Microbiology [Engl. Trans. Mikrobiologiya] 65:352–354, 1996) proposed that strain 4p, deposited as VKM B-1739, should be the new type strain of Halobacterium (Halorubrum) distributum. This strain is sufficiently different from the validated type strain (strain 1m [= VKM B-1733]) to be classified in a different species. The proposed establishment of a neotype strain for Halorubrum distributum while the originally designated type strain is extant is in conflict with Rule 18c of the International Code of Nomenclature of Bacteria. To avoid all confusion, strain VKM B-1733 should remain the type strain of Halorubrum distributum, and a new species may be proposed to include VKM B-1739 and a number of related isolates.
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Proposed Minimal Standards for Description of New Taxa in the Order Halobacteriales
A. Oren, A. Ventosa and W. D. GrantAbstractIn accordance with Recommendation 30b of the International Code of Nomenclature of Bacteria, which calls for the development of minimal standards for describing new species, we propose minimal standards for description of new taxa in the order Halobacteriales. The minimal standards include information on the following characteristics: cell morphology; motility; pigmentation; the requirement for salt to prevent cell lysis; optimum NaCl and MgCl2 concentrations for growth and range of salt concentrations enabling growth; temperature and pH ranges for growth; anaerobic growth in the presence of nitrate or arginine; acid production from a range of carbohydrates; ability to grow on single carbon sources; catalase and oxidase tests; hydrolysis of starch, casein, and Tween 80; sensitivity to different antibiotics; and polar lipids. The placement of a new taxon should be consistent with phylogeny, which is usually based on 16S rRNA nucleotide sequence information, and with DNA-DNA hybridization data in the case of descriptions of new species. This proposal has been endorsed by the members of the Subcommittee on the Taxonomy of Halobacteriaceae of the International Committee on Systematic Bacteriology.
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- Matters Relating To The International Committee On Systematic Bacteriology
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- Letters To The Editor
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- Errata
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