Phylogenetic placement of the anamorphic tribe Ustilaginoideae (Hypocreales, Ascomycota)
Phylogenetic placement of the anamorphic tribe Ustilaginoideae (Hypocreales, Ascomycota)
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DOI：
10.2307/3762091
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发表时间：
2004-09-01
期刊：
影响因子：
2.8
通讯作者：
White, JF
中科院分区：
文献类型：
--
作者：
Bischoff, JF;Sullivan, RF;White, JF
绿核菌族（肉座菌目，子囊菌纲）由三个无性型属组成，即芒基属、新芒基属和绿核菌属。芒基属和新芒基属的物种生长在竹子（丘斯夸属）的茎秆上，分布于新热带地区，而绿核菌属的物种侵染各种禾本科植物的小花，呈泛热带分布。在这项研究中，我们评估了该族的系统发育，并对其与麦角菌目有性型类群的亲缘关系的假设进行了评估。为了支持系统发育分析，还对绿核菌族几个关键物种的代表的形态进行了研究。利用核糖体RNA基因大亚基序列进行的系统发育分析表明，绿核菌族的成员不同于麦角菌科的有性型属，并且绿核菌族应被视为肉座菌目中的一个单系群。然而，系统发育分析未能确定绿核菌族在麦角菌科或肉座菌科中的位置，这表明它可能是肉座菌目中一个独特的谱系。这一评估支持了麦角菌科中瘤座菌族和麦角菌族的单系性。
Tribe Ustilaginoideae (Hypocreales, Ascomycetes) is made up of three anamorph genera, Munkia, Neomunkia and Ustilaginoidea. Species of Munkia and Neomunkia develop on the culms of bamboo (Chusquea spp.) and have a neotropical distribution while species of Ustilaginoidea infect the florets of various grasses and are pantropical in distribution. In this study we evaluated the phylogeny of the tribe and assessed hypotheses regarding its affinity to clavicipitalean teleomorphic groups. To support phylogenetic analyses, morphology of representatives of several key species of Ustilaginoideae was examined also. Phylogenetic analyses using sequences of the large subunit of the ribosomal RNA gene suggest that members of Ustilaginoideae are distinct from teleomorphic genera of Clavicipitaceae and that Ustilaginoideae should be recognized as a monophyletic group within Hypocreales. However, phylogenetic analyses did not resolve the placement of Ustilaginoideae in Clavicipitaceae or Hypocreaceae, suggesting that it might be a distinct lineage within Hypocreales. This evaluation supported the monophyly of tribes Balansieae and Clavicipeae in the family Clavicipitaceae.