Two Novel Exophiala Species Isolated from Galls on the Chinese Magnolia-Vine (Schisandra Chinensis) in Korea.

IF 2 4区生物学 Q2 AGRONOMY

Mycobiology Pub Date : 2025-10-19 eCollection Date: 2025-01-01 DOI:10.1080/12298093.2025.2567707

Seong-Keun Lim, Min-Ki Kim, Che-Yeon Park, Won-Kwon Jung, In-Kyu Kang, Seung-Yeol Lee, Hee-Young Jung

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Abstract

Two novel fungal species (KNUF-24-1Ha^T and KNUF-24-3La^T), belonging to the genus Exophiala, were isolated from galls produced by gall-midge (Lasioptera sp.; Diptera: Cecidomyiidae) on a Chinese magnolia vine (Schisandra chinensis) collected in Mungyeong-si, Gyeongbuk province, South Korea. Molecular analyses based on combined sequences of the internal transcribed spacer (ITS) regions and partial sequences of the large subunit (LSU), rRNA, beta-tubulin, and actin genes revealed that the strains clustered within the Exophiala genus. However, strains KNUF-24-1Ha^T and KNUF-24-3La^T each occupied a distinct phylogenetic position. Comparative analysis of the morphological characteristics of KNUF-24-1Ha^T and KNUF-24-3La^T and those of closely related species in the phylogenetic tree revealed distinct differences in the shape and size of conidia, conidiogenous cells, and yeast cells. Based on molecular and morphological evidence, strains KNUF-24-1Ha^T and KNUF-24-3La^T represent a novel species within the genus Exophiala, now designated as Exophiala schisandrae sp. nov. and E. exsudans sp. nov., respectively.

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从中国玉兰藤（Schisandra Chinensis）瘿中分离的两种新的外寄生种。

从庆北闻庆市一株玉兰藤（Schisandra chinensis）瘿蚊（Lasioptera sp.；双翅目：瘿蚊科）的瘿瘿中分离到两种新真菌（KNUF-24-1HaT和KNUF-24-3LaT）。基于内部转录间隔区（ITS）和大亚基（LSU）、rRNA、β -微管蛋白和肌动蛋白基因部分序列的分子分析表明，该菌株聚集在Exophiala属。然而，菌株KNUF-24-1HaT和KNUF-24-3LaT各自占据不同的系统发育位置。通过对比分析KNUF-24-1HaT和KNUF-24-3LaT与近缘种的分生孢子、分生细胞和酵母细胞的形态特征，发现它们在分生孢子、分生细胞和酵母细胞的形状和大小上存在明显差异。根据分子和形态学证据，菌株KNUF-24-1HaT和KNUF-24-3LaT代表了Exophiala属的一个新种，现在分别被命名为Exophiala schisandrae sp. 11和E. exsudans sp. nov。

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来源期刊

Mycobiology AGRONOMYMYCOLOGY-MYCOLOGY

CiteScore

3.90

自引率

5.30%

发文量

审稿时长

22 weeks

期刊介绍： Mycobiology is an international journal devoted to the publication of fundamental and applied investigations on all aspects of mycology and their traditional allies. It is published quarterly and is the official publication of the Korean Society of Mycology. Mycobiology publishes reports of basic research on fungi and fungus-like organisms, including yeasts, filamentous fungi, lichen fungi, oomycetes, moulds, and mushroom. Topics also include molecular and cellular biology, biochemistry, metabolism, developmental biology, environmental mycology, evolution, ecology, taxonomy and systematics, genetics/genomics, fungal pathogen and disease control, physiology, and industrial biotechnology using fungi.