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首页> 外文期刊>Nova Hedwigia: Zeitschrift fur Kryptogamenkunde >New species and new findings of phoma-like fungi (Didymellaceae) associated with some Asteraceae in Russia
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New species and new findings of phoma-like fungi (Didymellaceae) associated with some Asteraceae in Russia

机译：与俄罗斯的一些奥尔西亚群相关的Phoma样真菌（DidyMellaceae）的新物种和新发现

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摘要

The notable difficulties in the morphological identification of phoma-like fungi have resulted in a poor understanding of the generic and species boundaries in this group of organisms. In most available mycofloristic and phytopathological studies, there is no reliable information on the distribution of certain nonspecialized phomoid species on cultivated crops or wild plants. Both the revision of existing data on the biodiversity and geographical distribution of phoma-like fungi associated with Asteraceae in Russia and the acquisition of new knowledge according to modern concepts of these fungi are therefore of great significance. The aim of this study was to identify phoma-like strains from Asteraceae based primarily on phylogenetic analyses of the sequences of four loci (ITS, LSU, TUB, RPB2) as well as on traditional morphological approaches. The resulting phylogenetic trees revealed six well-supported monophyletic clades corresponding to six genera in the family Didymellaceae: Ascochyta, Boeremia, Didymella, Neoascochyta, Nothophoma, and Stagonosporopsis. The isolates were identified as As. kamchatica, B. exigua, B. exigua var. forsythiae, B. exigua var. linicola, D. americana, D. glomerata, D. macrophylla, D. pinodella, D. pomorum, D. rosea, Ne. desmazieri, Ne. paspali, No. quercina, St. dennisii, and St. inoxydabilis. Ascochyta kamchatica sp. nov. was described as a new species. Three Didymella species (D. pinodella from Cirsium arvense, D. rosea from Sonchus arvensis, and D. macrophylla from Taraxacum officinale), two Neoascochyta species (Ne. desmazieri from T. officinale and Ne. paspali from Achillea millefolium) and St. dennisii from T. officinale were the first records of these phoma-like fungi in Russia.
机译：对照样真菌的形态鉴定的显着困难导致了对这群生物体的通用和物种界限的理解差。在最可用的植物和植物病理学研究中，没有有关培养作物或野生植物的某些非专科化物种分布的可靠信息。因此，关于与俄罗斯的欧洲奥尔西亚群相关的生物多样性和地理分布的现有数据以及根据这些真菌的现代概念获取新知识的生物多样性和地理分布的性质和地理分布。因此，这些真菌的现代概念具有重要意义。本研究的目的是鉴定来自奥斯泰西的phoma样菌株，主要基于四个基因座（其，Lsu，桶，RPB2）以及传统形态学方法的系统发育分析。由此产生的系统发育树揭示了六种良好的良好支持的单胞菌，对应于六属DidyMellaceae：Ascochyta，Boeremia，脱蛋白，NeoAscochyta，Nothophoma和StagoSporopsis。将分离物鉴定为。 Kamchatica，B. exigua，B. exigua var。 Forsythiae，B. exigua var。 Linicola，D. Americana，D.Glomerata，D. Macrophylla，D.Pinodella，D.Pomorum，D.Rosea，Ne。 Desmazieri，Ne。 Paspali，No. Quercina，St. Dennisii和St. Inoxydabilis。 ascochyta kamchatica sp。 11月。被描述为一个新的物种。三种脱米巴物种（来自Cirsium Arvense的Pinodella，来自Sonchus Arvensis的D. Rosea，来自塔克斯科姆officinale的D. macrophylla），两个新萨克斯yemies（Ne。来自T. Officinale和Ne的Desmazieri。来自Achillea Millefolium的Paspali）和圣Dennisii来自T. Officinale是俄罗斯这些像素样真菌的第一批记录。

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