Scholarlink

<p>The genus <i>Cadophora</i> was established in 1927 as a dematiaceous asexual taxon characterized by solitary phialides with distinct collarettes. Today, phylogenetic analyses suggested that members of <i>Cadophora</i> belong to the <i>Ploettnerulaceae</i> (<i>Helotiales</i>, Ascomycetes). However, the sexual stage is unknown except for a few species. <i>Cadophora fallopiae</i>, occurring on overwintered stems of <i>Reynoutria japonica</i> and <i>R. sachalinensis</i> in Europe, was based only on its conidiomatous asexual stage. In Japan, <i>C. fallopiae</i>-like conidiomata were now discovered associating apothecia of <i>Pyrenopeziza</i> sp. on the same hosts. Therefore, conspecificity of apothecia and conidiomata was suspected. A detailed comparison of morphology and ITS-5.8S sequences confirmed that this fungus is identical to <i>C. fallopiae</i> known in Europe, and an emendation of the species <i>C. fallopiae</i> was proposed to include sexual stage based on a holomorphic specimen in Japan. Based on the genetic diversity of single ascosporous isolates derived from a single apothecium, we hypothesize that the lack of a compatible mating type might be the reason why the sexual stage does not occur in Europe.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Emendation of the description of Cadophora fallopiae from Reynoutria spp. in Japan based on a holomorphic specimen

  • 期刊论文

  • 发表日期：

    2025年1月15日

查看全文
  • Hiyori Itagaki,
  • Tsuyoshi Hosoya

摘要

The genus Cadophora was established in 1927 as a dematiaceous asexual taxon characterized by solitary phialides with distinct collarettes. Today, phylogenetic analyses suggested that members of Cadophora belong to the Ploettnerulaceae (Helotiales, Ascomycetes). However, the sexual stage is unknown except for a few species. Cadophora fallopiae, occurring on overwintered stems of Reynoutria japonica and R. sachalinensis in Europe, was based only on its conidiomatous asexual stage. In Japan, C. fallopiae-like conidiomata were now discovered associating apothecia of Pyrenopeziza sp. on the same hosts. Therefore, conspecificity of apothecia and conidiomata was suspected. A detailed comparison of morphology and ITS-5.8S sequences confirmed that this fungus is identical to C. fallopiae known in Europe, and an emendation of the species C. fallopiae was proposed to include sexual stage based on a holomorphic specimen in Japan. Based on the genetic diversity of single ascosporous isolates derived from a single apothecium, we hypothesize that the lack of a compatible mating type might be the reason why the sexual stage does not occur in Europe.