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首页> 外文期刊>Mycologia >Magnaporthiopsis, a new genus in Magnaporthaceae (Ascomycota).
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Magnaporthiopsis, a new genus in Magnaporthaceae (Ascomycota).

机译：Magnaporthiopsis，Magnaporthaceae（Ascomycota）的一个新属。

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摘要

The phylogenetic relationships among taxa in the Magnaporthaceae are investigated based on DNA sequences of multiple genes including SSU, ITS, LSU, MCM7, RPB1 and TEF1. The genera Magnaporthe and Gaeumannomyces are shown to be polyphyletic and their members are divided into four major groups based on the phylogenetic analyses. Considering morphological, biological and molecular data, we establish a new genus, Magnaporthiopsis. It is characterized by black and globose perithecia with a cylindrical neck, two-layered perithecial wall, clavate asci with a refractive apical ring, fusiform to fusoid and septate ascospores, simple hyphopodia, and Phialophora-like anamorph. Species in this genus are necrotrophic parasites infecting roots of grasses. Three new combinations, Magnaporthiopsis poae, M. rhizophila and M. incrustans, are proposed accordingly. Pyricularia is suggested as the generic name for the rice blast fungus over Magnaporthe, following Article 59.1 of the International Code of Nomenclature for algae, fungi and plants. A new combination, Nakataea oryzae, is proposed for the rice stem rot fungus.
机译：基于多个基因的DNA序列，包括SSU，ITS，LSU，MCM7，RPB1和TEF1，研究了稻瘟病菌的分类群之间的系统发育关系。 Magnaporthe和Gaeumannomyces属被证明是多系的，根据系统发育分析将其成员分为四个主要类别。考虑到形态学，生物学和分子数据，我们建立了一个新的属，Magnaporthiopsis。它的特征是黑色和球状的皮膜，具有圆柱形的颈部，两层皮膜壁，具有弯曲的顶环的棒状腹水，梭形到融合的和分隔的子囊孢子，简单的恐足症，和类似Phialophora的无性型。该属中的物种是感染草根的坏死性寄生虫。因此，提出了三种新的组合，即Magnaporthiopsis poae，M。rhizophila和M. incrustans。根据《国际藻类，真菌和植物命名法》第59.1条，建议将稻瘟病作为稻瘟病菌在Magnaporthe上的通用名称。有人提出了一种新的组合，即Nakataea oryzae，用于稻杆腐烂真菌。

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