地霉属（Geotrichum Link.）中的脱氧核糖核酸碱基组成与分类学

Deoxyribonucleic acid base composition and taxonomy in the genus Geotrichum Link.

作者信息

Guého E

出版信息

Antonie Van Leeuwenhoek. 1979;45(2):199-210. doi: 10.1007/BF00418584.

Abstract

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.

摘要

已测定了25种与地霉属相关的类酵母真菌DNA中鸟嘌呤+胞嘧啶的摩尔百分比（%GC）。这一标准与生化特征一起可将这些物种分为3组：一组类似于白地霉（%GC：31.5 - 42），包含8种不完全型和6种完全型。在这一组中，只有头状地霉的%GC较低（31.5）。观察到第二组有6个物种类似于丝孢酵母属（57 - 60%），以及第三组有4个物种的中间类别（42 - 53.5%）。GC值与生化特征密切相关，例如脲酶的存在、同化有机底物的数量，也与子囊菌或担子菌的典型特征的存在有关。