ITS sequence data suggest variability of ascus types and support ontogenetic characters as phylogenetic discriminators in the Agyriales (Ascomycota)
ITS sequence data suggest variability of ascus types and support ontogenetic characters as phylogenetic discriminators in the Agyriales (Ascomycota)
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DOI：
10.1017/s0953756201003483
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发表时间：
2001-03-01
影响因子：
--
通讯作者：
Wedin, M
中科院分区：
文献类型：
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作者：
Lumbsch, HT;Schmitt, I;Wedin, M
利用ITS1、5.8S和ITS2 rDNA的核苷酸序列研究了该菌的生殖发育。这些地区的序列从13 agyrialean真菌的15个新的序列进行了比对的Ostropales作为外群的四个代表。六个不同的路线进行了分析，使用最大简约的分支。在严格的一致树中，该类群被认为是一个单系类群，并与牛筋草科（Rimulariaceae）和Sacomorphacene的同物异名得到了确认。Schaererridcene也被证明属于Agyriacene。在Agyriales选定的字符的分布进行了调查，它表明，在组内的变量，而ascoma个体发育是不变的Agyriacene。Trapelia作为通常外切是多系的。T.geochroa类群与菱属没有密切关系。str.和新属Ainoa，包括T.geochroa和T. mooreana
The phylogeny of the Agyriales was investigated using nucleotide sequences of ITS1, 5.8S, and ITS2 rDNA. Sequences of these regions from 15 new sequences of 13 agyrialean fungi were aligned to those of four representatives of Ostropales used as outgroup. Six different alignments were analysed cladistically using maximum parsimony. The Agyriales were supported as a monophyletic group in the strict consensus tree and the synonymy of the Rimulariaceae and Saccomorphacene was confirmed. The Schaereridcene is also shown to belong to the Agyriacene. The distribution of selected characters in the Agyriales is investigated and it is shown that the ascus type is variable within the group, while the ascoma ontogeny is invariant within the Agyriacene. Trapelia as usually circumscribed is polyphyletic. The T.geochroa group is not closely related to Trapelia s. str. and the new genus Ainoa is described to accommodate T.geochroa and T. mooreana.