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Deoxyribonucleic acid base composition and taxonomy in the genusGeotrichumLink

✍ Scribed by Eveline Guého

Publisher
Springer Netherlands
Year
1979
Tongue
English
Weight
664 KB
Volume
45
Category
Article
ISSN
0003-6072

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✦ Synopsis

The molar percentage of guanine + cytosine (% GC) in the DNA from 25 yeast-like fungi related to the genus Geotrichum has been measured. This criterion together with the biochemical characteristics allow the division of the species into 3 groups: one group resembling G. candidum (% GC: 31.5--42) and containing 8 imperfect and 6 perfect forms. In this group only G. capitatum has a lower % GC (31.5). A second group of 6 species resembling the genus Trichosporon (57--60%) and a third intermediate category of 4 species (42--53.5%) were observed. The GC-values correlate well with biochemical characters, e.g. the presence of urease, the number of organic substrates assimilated, and also with the presence of characters typical of the Ascomycetes or the Basidiomycetes.

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