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Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus
Thesis (M. Sc.) -- University of Stellenbosch, 1992.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613832530100224 |
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| access_status_str | Open Access |
| author | Du Toit, Margaretha |
| author2 | Dicks, L. M. T. |
| author_browse | Dicks, L. M. T. Du Toit, Margaretha |
| author_facet | Dicks, L. M. T. Du Toit, Margaretha |
| author_sort | Du Toit, Margaretha |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (M. Sc.) -- University of Stellenbosch, 1992. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/69781 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:42:24.259Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/69781 Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus Du Toit, Margaretha Dicks, L. M. T. Stellenbosch University. Faculty of Science. Dept. of Microbiology. Lactobacillus -- Classification Dissertations -- Microbiology Thesis (M. Sc.) -- University of Stellenbosch, 1992. Taxonomic relationships among 75 strains of the subgenera Thermobacterium and Streptobacterium of the genus Lactobacillus was determined by numerical analysis of total soluble cell protein patterns as an indicator of genotypic relatedness. Thirty seven strains of the subgenus Thermobacterium (Group 1) grouped at 𝑟≥0.41. They included the species Lactobacillus acidophilus, Lactobacillus amylophilus, Lactobacillus amylovorus, Lactobacillus animalis, Lactobacillus crispatus, Lactobacillus delbrueckii subsp. bulgaricus, L. delbrueckii subsp. delbrueckii, L. delbrueckii subsp. lactis, 1. delbrueckii subsp. leichmannii, Lactobacillus farciminis, Lactobacillus gasseri, Lactobacillus helveticus. Lactobacillus jensenii, Lactobacillus mali, Lactobacillus salivarius subsp. salicinius, L. salivarius subsp. salivarius, and Lactobacillus sharpeae. Sixteen strains grouped in cluster 1 at 𝑟≥0.77 and displayed almost identical protein profiles. The type strains of L. delbrueckii subsp. leichmanni (NCFB 299𝑇) L. crispatus (NCFB 2752𝑇) L. sharpeae (NCF-B 2590𝑇). L. delbrueckii subsp. bulgaricus (NCFB 1489𝑇). L. amylophilus (NCFB 2503𝑇) and L. jensenii (NCFB 2165𝑇) grouped at 𝑟≥0.77 with the type strain of L. acidophilus (NCFB 1748𝑇) indicating that they belonged to one genotypic group. Lactobacillus crispatus NCFB 2752𝑇 and NCFB 4, L. jensenii NCFB 2165𝑇 and L. helveticus NCFB 87 should be reclassified as L. acidophilus. Furthermore, L. acidophilus NCFB 2745𝑇 should be reclassified as L. farciminis and strain VPI P9A27 designated as the type of L. acidophilus DNA homology group A3. Strains of L. acidophilus within DNA homology groups Vi to A4, B1, and B2 displayed <ifferent protein profiles, indicating that they consisted of a genotypically heterogerous collection of rains. More strains of L. acidophilus will have to be studied on a moscular level before the species can be subdivided Twenty strains designated L. animalis, L. fabainis, L. salivarius subsp. solicinius, L. crispatus, L. acidophilus, L. helveticus, L. delbrackii subsp. bulgaricus, L. salivarius subsp. salivarius, L. delbrueckii subsp. delbrueckii, and. amylovoris did not group into any cluster, indicating they were distre and separate species. The type strains of L. gasseri (NCFB 2233) and L. delbrueckii abso, lactis (NCFB 1438𝑇) linked at 𝑟=0.41 to all other strains, indicating they are genotyn.callv less related to the other species within the subgenus Thermobacterium (Group 1). Masters 2012-08-27T12:27:15Z 2012-08-27T12:27:15Z 1992 Thesis http://hdl.handle.net/10019.1/69781 en Stellenbosch University 82 pages Stellenbosch : Stellenbosch University |
| spellingShingle | Lactobacillus -- Classification Dissertations -- Microbiology Du Toit, Margaretha Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title | Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title_full | Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title_fullStr | Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title_full_unstemmed | Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title_short | Taxonomy of the subgenera Thermobacterium and Streptobacterium (Groups I and II) of the genus Lactobacillus |
| title_sort | taxonomy of the subgenera thermobacterium and streptobacterium groups i and ii of the genus lactobacillus |
| topic | Lactobacillus -- Classification Dissertations -- Microbiology |
| url | http://hdl.handle.net/10019.1/69781 |
| work_keys_str_mv | AT dutoitmargaretha taxonomyofthesubgenerathermobacteriumandstreptobacteriumgroupsiandiiofthegenuslactobacillus |