Seiridium (Sporocadaceae): an important genus of plant pathogenic fungi
Seiridium (Sporocadaceae): an important genus of plant pathogenic fungi
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DOI：
10.3767/persoonia.2018.40.04
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发表时间：
2018-06-01
期刊：
影响因子：
9.1
通讯作者：
Crous, P. W.
中科院分区：
文献类型：
--
作者：
Bonthond, G.;Sandoval-Denis, M.;Crous, P. W.
丝孢菌属包括多种植物病原真菌，是柏科植物溃疡病的病原菌。在分类学上，几个物种的地位一直是一个争论的话题，因为该属的系统发育仍然没有解决，而且大多数情况下都没有真正的前模式文化。在本研究中，从CBS和IMI收集了大量的Seiridium文化和标本进行了形态学和遗传学研究，以解决属的分类。这些调查包括最重要的柏科病原菌的模式材料，塞里迪·卡迪纳莱，S. cupressi和S.独角兽我们构建了一个基于四个位点的Seridium的遗传学，即ITS rDNA区域，部分翻译延伸因子1-α（TEF），β-微管蛋白（TUB）和RNA聚合酶II核心亚基（RPB 2）。根据这些结果，我们能够确认S。unicorne和S.柏代表不同的物种。此外，还描述了5个新种，即细网藻S. cupressi进行了表型选择，并对S. cupressi和S.尤卡坦半岛。
The genus Seiridium includes multiple plant pathogenic fungi well-known as causal organisms of cankers on Cupressaceae. Taxonomically, the status of several species has been a topic of debate, as the phylogeny of the genus remains unresolved and authentic ex-type cultures are mostly absent. In the present study, a large collection of Seiridium cultures and specimens from the CBS and IMI collections was investigated morphologically and phylogenetically to resolve the taxonomy of the genus. These investigations included the type material of the most important Cupressaceae pathogens, Seiridium cardinale, S. cupressi and S. unicorne. We constructed a phylogeny of Seiridium based on four loci, namely the ITS rDNA region, and partial translation elongation factor 1-alpha (TEF), beta-tubulin (TUB) and RNA polymerase II core subunit (RPB2). Based on these results we were able to confirm that S. unicorne and S. cupressi represent different species. In addition, five new Seiridium species were described, S. cupressi was lectotypified and epitypes were selected for S. cupressi and S. eucalypti.