Pyrenopeziza orientalipetiolaris sp. nov. in Japan and morphological and genetic comparison with its relevant species P. petiolaris in Europe.

IF 1.5 4区生物学 Q4 MYCOLOGY

Mycoscience Pub Date : 2022-08-11 eCollection Date: 2022-01-01 DOI:10.47371/mycosci.2022.07.003

Hiyori Itagaki, Tsuyoshi Hosoya

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Abstract

Some Asian fungi are morphologically very similar to European species but belong to different species. A fungus that resembles Pyrenopeziza petiolaris, which commonly occurs on the petioles of Acer pseudoplatanus in Europe, was found on the petioles of Acer spp. and other tree leaves in Japan. The apothecia of this fungus were smaller than those of P. petiolaris, suggesting that it is a different species. To examine this possibility, specimens of this fungus were collected from various hosts in Japan. A detailed morphological examination elucidated that this fungus differed from P. petiolaris in smaller apothecia, marginal cells of the ectal excipulum, and conidia. The ITS sequence difference between this fungus and P. petiolaris was 3.3-4.3%, and they formed distinct clades in the phylogenetic analysis, supporting that they are different species. Consequently, a new species, P. orientalipetiolaris is described. Since an undescribed phialophora-state was observed in the cultures of P. petiolaris for the first time, the morphology under culture is also reported in detail.

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日本的Pyrenopeziza orientalipetiolaris sp.nov.及其与欧洲相关种P. petiolaris的形态学和遗传学比较。

有些亚洲真菌在形态上与欧洲物种非常相似，但却属于不同的物种。在日本，人们在槭树和其他树叶的叶柄上发现了一种与欧洲常见的Pyrenopeziza petiolaris相似的真菌。这种真菌的皮孔比 P. petiolaris 的小，这表明它是一个不同的物种。为了研究这种可能性，我们从日本的不同寄主处采集了这种真菌的标本。详细的形态学检查结果表明，这种真菌与 P. petiolaris 的不同之处在于，它的皮孔、外生壳边缘细胞和分生孢子都较小。该真菌与 P. petiolaris 的 ITS 序列差异为 3.3-4.3%，它们在系统进化分析中形成了不同的支系，支持它们是不同的种。因此，我们描述了一个新种--P. orientalipetiolaris。由于在 P. petiolaris 的培养物中首次观察到了一种未被描述过的 phialophora 状态，因此还详细报告了其在培养物中的形态。

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来源期刊

Mycoscience MYCOLOGY-

CiteScore

3.00

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Mycoscience is the official English-language journal of the Mycological Society of Japan and is issued bimonthly. Mycoscience publishes original research articles and reviews on various topics related to fungi including yeasts and other organisms that have traditionally been studied by mycologists. The research areas covered by Mycoscience extend from such purely scientific fields as systematics, evolution, phylogeny, morphology, ecology, physiology, biochemistry, genetics, and molecular biology, to agricultural, medical, and industrial applications. New and improved applications of well-established mycological techniques and methods are also covered.