Relationships of the insect-pathogenic order entomophthorales (Zygomycota, Fungi) based on phylogenetic analyses of nuclear small subunit ribosomal DNA sequences (SSU rDNA)
Relationships of the insect-pathogenic order entomophthorales (Zygomycota, Fungi) based on phylogenetic analyses of nuclear small subunit ribosomal DNA sequences (SSU rDNA)
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DOI：
10.1006/fgbi.1998.1063
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发表时间：
1998-08-01
影响因子：
3
通讯作者：
Rosendahl, S
中科院分区：
文献类型：
--
作者：
Jensen, AB;Gargas, A;Rosendahl, S
本文测定了昆虫病原菌目7个种的核糖体DNA核小亚基（SSU rDNA）的序列，并与已发表的SSU rDNA序列进行了比较，用表型和分支系统学方法进行了系统发育分析。Ranarum与壶菌目（Chytridiales）和新美壶菌目（Neocallimasticales）的壶菌的亲缘关系比与虫霉目（Entomophthorales）的亲缘关系更近，如Nagahama等（Mycologia 87：203-209，1995）所提出的。细胞核特征（大核含有明显的浓缩染色质和缺乏一个突出的核仁）是预测价值的单系性的家庭虫霉科。分生孢子特征将只包括专性病原菌的虫霉科至少分为两个谱系：一个谱系具有单核分生孢子，另一个谱系具有多核分生孢子。这些信息可能被证明是重要的，在使用这些真菌作为生物防治剂。(C)北京：科学出版社.
We sequenced the nuclear small subunit of ribosomal DNA (SSU rDNA) from seven species within the insect-pathogenic order Entomophthorales, These sequences were aligned with other published SSU rDNA sequences and phylogenies were inferred using phenetic and cladistic methods, Based on three different phylogenetic methods the Entomophthorales (excluding Basidiobolus ranarum) is monophyletic; B. ranarum was more closely related to chytrids from Chytridiales and Neocallimasticales than to Entomophthorales, as was proposed by Nagahama et al, (Mycologia 87: 203-209, 1995). Nuclear characters (large nuclei containing conspicuous condensed chromatin and lack of a prominent nucleolus) were of predictive value for the monophyly of the family Entomophthoraceae. Conidial characters separate the Entomophthoraceae, which only includes obligate pathogens, into at least two lineages: one lineage with uninucleate conidia and another with multinucleate conidia, The two species of Conidiobolus studied were paraphyletic in our analyses and only distantly related to each other. This information may prove to be important in the use of these fungi as biocontrol agents. (C) 1998 Academic Press.