1887

Abstract

SUMMARY: Fifty thermophilic streptomycetes from diverse habitats were compared through 135 unit characters with 201 representative mesophilic streptomycetes from an earlier numerical phenetic study. Data were examined using the simple matching ( ), Jaccard ( ) and pattern ( ) coefficients, and clustering was achieved using the unweighted pair group method with arithmetic averages (UPGMA) technique. In all three analyses, the thermophilic streptomycetes formed an aggregate taxon composed of three major (seven to nineteen strains), five minor (two to three strains) and two single-member clusters. Cluster composition was not affected by the statistics used. The numerical phenetic data showed that thermophilic streptomycetes form several distinct centres of variation, four of which correspond to previously described species; a further taxon was also considered to merit species status. It is proposed that sp. nov. be recognized and the name Krassilnikov 1968 be revived. Emended descriptions are given for (Krassilnikov , 1968) Agre 1983, Henssen 1957 and Henssen 1957.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-133-11-3135
1987-11-01
2019-10-15
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-133-11-3135
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error