A phylogenetic hypothesis of Ustilaginomycotina based on multiple gene analyses and morphological data
A phylogenetic hypothesis of Ustilaginomycotina based on multiple gene analyses and morphological data
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DOI：
10.3852/mycologia.98.6.906
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发表时间：
2006-11-01
期刊：
影响因子：
2.8
通讯作者：
Bauer, Robert
中科院分区：
文献类型：
--
作者：
Begerow, Dominik;Stoll, Matthias;Bauer, Robert
担子菌亚门包括约1500种担子菌属植物寄生虫。它们通常是二态的，产生一个腐坏的单倍体酵母期和一个寄生的双核菌丝期。除了少数例外，它们出现在被子植物上，主要存在于禾本科和苏科植物上。分子方法最近表明，变形物种，如马拉色菌或Tilletiopsis的成员应该包括在这一组。在这里，我们提出了关于这个群体的系统发育的最新共识，并讨论了它的相关特征。我们的形态学、超微结构和分子系统发育数据表明，存在3个系：内根菌、内根菌和外根菌。肠根菌是菊科和苏科上的一种罕见的远孢子根寄生虫，以肠根菌为代表。绝大多数Ustilaginomycotina所属的Ustilaginomycotina是一种远孢和胃状菌群，其特征是存在较大的相互作用带。菌群是两歧的，主要由全保生的尿囊菌和主要由无保生的尿囊菌组成。外担子菌形成局部相互作用区。这个类群主要是全孢的，包括远孢的Doassansiales， Entylomatales， Georgefischeriales和Tilletiales，非远孢的Ceraceosorales， exobasdiales和Microstromatales，以及变形的Malasseziales。提出了内根菌、外担子菌和Ceraceosorales作为新的分类群，并对利用菌的描述进行了修订。
The subphylum Ustilaginomycotina comprises about 1500 species of basidiomycetous plant parasites. They are usually dimorphic, producing a saprobic haploid yeast phase and a parasitic dikaryotic hyphal phase. With only a few exceptions they occur on angiosperms and are found mainly on members of the Poaceae and Cyperaceae. Molecular methods recently have shown that anamorphic species such as members of Malassezia or Tilletiopsis should be included in this group. Here we present the most recent consensus as to the phylogeny of this group and discuss its relevant characteristics. Our morphological, ultrastructural and molecular phylogenetic data point to the existence of three lines of Ustilaginomycotina: Entorrhizomycetes, Ustilaginomycetes and Exobasidiomycetes. Entorrhizomycetes is represented by Entorrhizales, a small group of unusual teliosporic root parasites on Juncaceae and Cyperaceae. Ustilaginomycetes, to which the majority of Ustilaginomycotina belong, is a teliosporic and gastroid group characterized by the presence of enlarged interaction zones. Ustilaginomycetes is dichotomous, consisting of predominantly holobasidiate Urocystales and predominantly phragmobasidiate Ustilaginales. Exobasidiomycetes forms local interaction zones. This group is predominantly holobasidiate and consists of teliosporic Doassansiales, Entylomatales, Georgefischeriales and Tilletiales, nonteliosporic Ceraceosorales, Exobasidiales and Microstromatales, as well as the anamorphic Malasseziales. Entorrhizomycetes, Exobasidiomycetes and Ceraceosorales are proposed as new taxa, and the description of Ustilaginomycetes is emended.