Phylogeny of nematode-trapping fungi based on 18S rDNA sequences.
Phylogeny of nematode-trapping fungi based on 18S rDNA sequences.
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DOI：
10.1111/j.1574-6968.1998.tb12817.x
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发表时间：
1998
影响因子：
2.1
通讯作者：
D. Ahrén;B. Ursing;A. Tunlid
中科院分区：
文献类型：
--
作者：
D. Ahrén;B. Ursing;A. Tunlid
测定了15种捕食线虫真菌及其近缘种的18SrDNA序列。系统发育分析表明，节孢属、指状孢属、指状孢属、单顶孢属和杜丁顿孢属的种在一个尚未解决的单囊子囊菌群中形成了一个单系和孤立的分支。该分支内的系统发育模式与分生孢子的形态和分生孢子梗的形态不一致，而是与侵染结构的形态一致。结果从不同的方法树重建支持三个谱系的物种有收缩环，非寄生物种和物种有各种粘附结构（网，菌丝，旋钮和非收缩环）感染线虫。
The small subunit (SSU) ribosomal DNA (18S rDNA) from 15 species of nematode-trapping fungi and closely related non-parasitic species were sequenced. Phylogenetic analysis indicated that species within the genera of Arthrobotrys, Dactylaria, Dactylella, Monacrosporium and Duddingtonia formed a monophyletic and isolated clade among an unresolved cluster of apothecial ascomycetes. The phylogenetic patterns within this clade were not concordant with the morphology of the conidia nor the conidiophores, but rather with that of the infection structures. The results from the different methods of tree reconstruction supported three lineages; the species having constricting rings, the non-parasitic species and the species having various adhesive structures (nets, hyphae, knobs and non-constricting rings) to infect nematodes.