Phylogenetic investigations of Sordariaceae based on multiple gene sequences and morphology
Phylogenetic investigations of Sordariaceae based on multiple gene sequences and morphology
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DOI：
10.1016/j.mycres.2005.09.014
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发表时间：
2006-02-01
影响因子：
--
通讯作者：
Hyde, KD
中科院分区：
文献类型：
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作者：
Cai, L;Jeewon, R;Hyde, KD
囊壳科包含许多真菌，它们是各种生物学、生物化学、生态学、遗传学和进化研究的极好模式生物。为了确定该组内的进化关系和各自的系统发育位置，多基因序列（部分核28 S核糖体DNA，核ITS核糖体DNA和部分核β-微管蛋白）进行了分析，使用最大简约和贝叶斯分析。单独进行不同基因数据集的分析，然后组合以生成遗传学。我们报道了囊壳科是一个单系群，不包括Apodus和Diployelasinospora。Apodus和Diplogelasinospora与Lasiosphaeriaceae有关。多基因分析表明，孢子鞘不是一个系统发育上有意义的性状，以分离球孢属和球孢属。光滑孢子的Sordaria物种（包括所谓的Asordaria物种）构成了一个自然群体。因此，Asordaria与Sordaria同属。Anixiella种之间的Gelasinospora种嵌套，提供了进一步的证据表明，non-ostiolate ascomata已经从ostiolate ascomata在几个独立的场合。本研究与以往的研究结果一致，即异宗配合的脉孢菌属是单系的，而同宗配合的脉孢菌属可能有多个起源。虽然胶孢菌属和脉孢菌属密切相关，但没有足够的证据将目前接受的胶孢菌属和脉孢菌属归入同一属。(c)2005年，英国真菌协会。由爱思唯尔有限公司出版。保留所有权利。
The family Sordariaceae incorporates a number of fungi that are excellent model organisms for various biological, biochemical, ecological, genetic and evolutionary studies. To determine the evolutionary relationships within this group and their respective phylogenetic placements, multiple-gene sequences (partial nuclear 28S ribosomal DNA, nuclear ITS ribosomal DNA and partial nuclear beta-tubulin) were analysed using maximum parsimony and Bayesian analyses. Analyses of different gene datasets were performed individually and then combined to generate phylogenies. We report that Sordariaceae, with the exclusion Apodus and Diployelasinospora, is a monophyletic group. Apodus and Diplogelasinospora are related to Lasiosphaeriaceae. Multiple gene analyses suggest that the spore sheath is not a phylogenetic ally significant character to segregate Asordaria from Sordaria. Smooth-spored Sordaria species (including so-called Asordaria species) constitute a natural group. Asordaria is therefore congeneric with Sordaria. Anixiella species nested among Gelasinospora species, providing further evidence that non-ostiolate ascomata have evolved from ostiolate ascomata on several independent occasions. This study agrees with previous studies that show heterothallic Neurospora species to be monophyletic, but that homothallic ones may have a multiple origins. Although Gelasinospora and Neurospora are closely related and not resolved as monophyletic groups, there is insufficient evidence to place currently accepted Gelasinospora and Neurospora species into the same genus. (c) 2005 The British Mycological Association. Published by Elsevier Ltd. All rights reserved.