English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

SUMMARY Deoxyribonucleic acid (DNA) homologies. of 57 cultures of Streptomyces, with emphasis on those within the so-called Griseus group, were studied in relation to other taxonomic features used for Streptomyces. The DNA samples from the 25 species of the Griseus group, which commonly exhibited the I I features charac- teristic of S.griseusIsp 5236, showed homology values ranging from 38 to 104 % with the DNA sample from S. griseus ISP 5236. Among them, five species showed approx- imately 40 % homology value and 19 gave values of 56 % or higher. The DNA homologies of 12 streptomycetes which differed from the cultures of the Griseus group in one or two of the I I selected features were also determined using S. griseus ISP 5236 DNA. The genomic Griseus group was divided into six subgroups on the basis of the homology values with reference DNAs from Streptomyces griseus ISP 5236 and Actinomyces globisporus ISP 5199. The DNAs of streptomycetes in the largest subgroup were found to be highly homologous to DNA from S. californicus ISP 5058 located in that subgroup. From the data obtained, the suitability of several diagnostic features as taxonomic criteria are discussed.

An Evaluation of Taxonomic Criteria in Streptomycetes on the Basis of Deoxyribonucleic Acid Homology