Two novel Pleosporales species isolated from the bark of Acer saccharum.

Fungal systematics and evolution Pub Date : 2024-06-01 Epub Date: 2024-02-07 DOI:10.3114/fuse.2024.13.01

J N Mack, A Sproule, S W Shields, K A Seifert, M Smith, D P Overy

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Abstract

During a survey of culturable microfungi from the bark of sugar maple (Acer saccharum), Atrocalyx glutinosus and Nigrograna rubescens, two novel species of Pleosporales (Dothideomycetes) were isolated from several locations in eastern Ontario, Canada. Formal species descriptions are presented based on unique colony phenotypes and micromorphological characteristics and supported using multi-locus molecular phylogenetic comparisons with similar species. Both A. glutinosus and N. rubescens produce pycnidial asexual morphs in culture. As their names imply, under specific culture conditions, A. glutinosus excretes large amounts of the glutinous polysaccharide pullulan and N. rubescens produces a dark red naphthoquinone pigment that diffuses in the culture medium. Citation: Mack JN, Sproule A, Shields SW, Seifert KA, Smith M, Overy DP (2024). Two novel Pleosporales species isolated from the bark of Acer saccharum . Fungal Systematics and Evolution 13: 1-14. doi: 10.3114/fuse.2024.13.01.

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从槭树树皮中分离出两种新的 Pleosporales 菌种。

在对糖槭树（Acer saccharum）、Atrocalyx glutinosus 和 Nigrograna rubescens 树皮中可培养的微真菌进行调查期间，从加拿大安大略省东部的几个地方分离出了两个新的 Pleosporales（Dothideomycetes）物种。根据独特的菌落表型和微形态特征进行了正式的物种描述，并通过与相似物种的多焦点分子系统进化比较进行了佐证。A. glutinosus 和 N. rubescens 在培养过程中都会产生无性形态的菌丝。顾名思义，在特定的培养条件下，A. glutinosus 会排出大量的糯性多糖 pullulan，而 N. rubescens 则会产生一种暗红色的萘醌色素，这种色素会在培养基中扩散。引用：Mack JN, Sproule A, Shields SW, Seifert KA, Smith M, Overy DP (2024).从槭树树皮中分离出的两个新的 Pleosporales 菌种 .Fungal Systematics and Evolution 13: 1-14. doi: 10.3114/fuse.2024.13.01.

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Fungal systematics and evolution

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7.30

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