Molecular variation within and among species of Harpellales

被引:49
作者
Gottlieb, AM [1 ]
Lichtwardt, RW [1 ]
机构
[1] Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA
关键词
18S rDNA; ITS; phylogeny; RFLP; Smittium; Trichomycetes; Zygomycota;
D O I
10.2307/3761606
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Intra- and interspecific variation of the nuclear ribosomal internal transcribed spacers (ITS) of 77 Smittium isolates and related genera tvas studied using RFLP. Due to the sequence and length variation encountered, the ITS is unsuitable for comparison at the species level within Smittium, as presently delimited. Intra- and interspecific variation of 18S rDNA was also analyzed. Cladistic analysis of 32 new 18S rDNA sequences resolved at least five lineages and suggests that Smittium is not monophyletic. In addition, 17 18S rDNA sequences from 5 orders of Zygomycota were included to assess phylogenetic relationships with the Trichomycetes. The kickxellid origin of Trichomycetes was not strongly supported.
引用
收藏
页码:66 / 81
页数:16
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