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1887

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Volume 93, Issue 1

Deoxyribonucleic Acid Reassociation in the Classification of Flavobacteria Free

Abstract

Summary: DNA-DNA reassociation studies showed that strains had a genetic relatedness of 91 to 100% with inter-strain duplexes having high thermal stabilities. The only exception, strain 10016, had an average relatedness of only 43% to other strains of The apparent divergence in DNA base sequence of this strain was reflected in the structural differences of some enzymes. There was a gradation of DNA relatedness among the group II-b strains, but three strains were sufficiently related to constitute a species. Low levels of genetic relatedness were confirmed between and strains of group II-b, group II-f, and All strains had base compositions in the range 32 to 46% guanine plus cytosine. The genome sizes of representative strains of and group II-b were 2·50 × 10 to 3·52 × 10 daltons, whereas the group II-f strains had smaller genomes of 1·64 × 10 to 1·81 × 10 daltons. The taxonomic implications of these findings are discussed.

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© Society for General Microbiology, 1976
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1976-03-01
2026-01-23

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Deoxyribonucleic Acid Reassociation in the Classification of Flavobacteria
Microbiology 93, 89 (1976); https://doi.org/10.1099/00221287-93-1-89
/content/journal/micro/10.1099/00221287-93-1-89
/content/journal/micro/10.1099/00221287-93-1-89
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