Adansonの思想,Similarity ValueおよびCenter Speciesの概念よりみた微生物の相互関係と分類 (第4報)

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  • Adansonian Taxonomy and Relationship of Microorganisms Based on the Concepts of Similarity Value and Center Species (IV)
  • Adanson ノ シソウ , Similarity Value オヨビ Center Species ノ ガイネン ヨリ ミタ ビセイブツ ノ ソウゴ カンケイ ト ブンルイ 4 Streptococceaeゾク ト Lactobacilleaeゾク , Propionibacterieaeゾク ト ノ カンケイ
  • Studies on the Relationship of Tribes <i>Streptococceae, Lactobacilleae</i> and <i>Propionibacterieae</i>
  • <i>Streptococceae</i>族と<i>Lactobacilleae</i>族,<i>Propionibacterieae</i>族との関係

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Taxonomy and reorientation for family Lactobacillaceae and family Propionibacteriaceae (Bergey's Manual) were studied from the view point of Adanson's theory, Sneath's similarity value and Hayashi's (one of the authors) concept of center species which was calculated from reciprocal mean similarity value. The results obtained are as follows.<br>1. Genus Lactobacillus<br>All species in genera Lactobacillus, Catenabacterium, Ramibacterium and Cillobacterium, except Cillobacterium combesii, should be included in one genus. The new genus which includes the four genera described above should be named Lactobacillus according to the nomenclature code. Eubacterium crispatum also should be placed in the genus Lactobacillus.<br>2. Genus Cillobacterium<br>Since Cillobacterium combesii should not be included in the genus Lactobacillus, this species constitutes genus Cillobacterium.<br>3. Genus Eubacterium<br>Eubacterium lentum only constitutes genus Eubacterium. Other species of the genus should be included in genus Butyribacterium, because all of them produce butyric acid from carbohydrate.<br>4. Genus Butyribacterium<br>Butyribacterium rettgeri and 18 species in Eubacterium should be included in Butyribacterium, because they have high similarity value reciprocally.<br>5. Genus Propionibacterium<br>The Bergey's classification of genus Propionibacterium is proper.<br>6. Genus Zymobacterium<br>Only one species, Zymobacterium oroticium, constitutes properly genus Zymobacterium.<br>7. From the general consideration, three genera, Lactobacillus, Cillobacterium and Eubacterium, should constitute tribe Lactobacilleae.<br>8. In family Coccaceae, tribe Lactobacilleae should be separated from tribe Streptococceae.<br>9. Tribe Lactobacilleae and tribe Propionibacterieae should be proper to constitute family Lactobacillaceae.<br>10. Family Propionibacteriaceae should be subordinated to tribe Propionibacterieae, and three genera, Butyribacterium, Propionibacterium and Zymobacterium, should constitute this tribe.<br>11. Relationship between the classification of Bergey's Manual and the authors' proposal is presented (table 6).<br>12. From the general consideration of the results, the authors suggested that the family Lactobacillaceae might contain four tribes, Lactobacilleae, Propionibacterieae and two unknown tribes.

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