A taxonomic revision of Aureobasidium (Saccotheciaceae, Dothideales) with new species, new names, and typifications.

IF 7.3 1区生物学 Q1 MYCOLOGY

Persoonia Pub Date : 2025-06-01 Epub Date: 2025-05-14 DOI:10.3114/persoonia.2025.54.05

B Jumbam, I A Zasada, K Bensch, P W Crous, M C Aime

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引用次数: 0

Abstract

Aureobasidium comprises dimorphic yeast-like fungi that usually produce melanised cells at maturity. Species are globally distributed and ubiquitous, colonizing a variety of habitats. At present, ca 40 species are accepted, with the type, A. pullulans, representing a complex of unresolved cryptic species. In this study, we isolated 128 Aureobasidium from multiple temperate and tropical regions. We performed multigene analyses using eight loci (ITS, 28S, EF1a, ELO2, RPB2, BTUB, mtLSU and mtSSU) on new isolates and including sequences from type material for all available Aureobasidium species. Data on growth, physiological profiles, micro- and macromorphological attributes were also collected and analysed. Several DNA-based species delimitation methods were evaluated for their ability to delimit species. We found that assimilation of D-quinic acid, L-sorbose, D-mannitol, gluconolactone, erythritol, L-arabinose, and sodium succinate dibasic hexahydrate were important in delineating species of Aureobasidium and note that production of pigmentation in culture often takes longer than the 14 d standard for carbon assimilations. Genealogical concordance phylogenetic species recognition criteria (GCPSR) provided the most consistent results for species delimitation. We describe nine new species of Aureobasidium (A. albui, A. cavalettoi, A. diazvalderramae, A. ellingtonae, A. essambei, A. peruvianum, A. rubi, A. toomeae, and A. vanuatuense), make new combinations for A. aubasidani (≡ A. pullulans var. aubasidani), A. fermentans (≡ Pullularia fermentans), and A. mahoniae (≡ Selenophoma mahoniae), validate and provide descriptions for A. musti and A. uvarum, and provide lecto- and epitypes for Dematium pullulans, the basionym of A. pullulans. Finally, we resolved the phylogeny for Aureobasidium, reduce Kabatiella (based on K. microsticta) to synonymy, and provide an updated list of species to facilitate future studies. Citation: Jumbam B, Zasada IA, Bensch K, Crous PW, Aime MC (2025). A taxonomic revision of Aureobasidium (Saccotheciaceae, Dothideales) with new species, new names, and typifications. Persoonia 54: 147-195. doi: 10.3114/persoonia.2025.54.05.

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文章题目荆芥属植物的分类订正：新种、新名、新分型。

小孢子菌包括二态酵母样真菌，成熟时通常产生黑化细胞。物种分布全球，无处不在，在各种栖息地定居。目前，大约有40种被接受，其中类型为a . pullulans，代表了一个未解决的隐种复合体。在本研究中，我们从多个温带和热带地区分离到了128株金黄色葡萄球菌。我们利用8个位点（ITS, 28S, EF1a, ELO2, RPB2， BTUB， mtLSU和mtSSU）对新分离物进行了多基因分析，包括所有可用的Aureobasidium种的型物质序列。还收集和分析了生长、生理特征、微观和宏观形态特征的数据。对几种基于dna的物种划分方法的物种划分能力进行了评价。我们发现，d -奎宁酸、l -山梨糖、d -甘露醇、葡萄糖酸内酯、赤藓糖醇、l -阿拉伯糖和琥珀酸二碱六水钠的同化对描述Aureobasidium的种类很重要，并注意到培养中色素沉着的产生通常需要比碳同化标准的14天更长。系谱一致性系统发育物种识别标准（GCPSR）提供了最一致的物种划分结果。我们描述了9个新的毛霉属（A. albui， A. cavalettoi， A. diazvalderramae， A. ellingtonae， A. essambei， A. peruvianum， A. rubi， A. toomeae和A. vanuatuense），对A. aubasidani(≡A. pullulans var. aubasidani)， A. fermentans（≡Pullularia fermentans）和A. mahoniae（≡Selenophoma mahoniae）进行了新的组合，验证并提供了A. musti和A. uvarum的描述，并提供了A. pullulans的基部Dematium pullulans的特征和类型。最后，我们解决了Aureobasidium的系统发育问题，将Kabatiella（基于K. microsticta）降为同义种，并提供了一个更新的物种列表，以方便今后的研究。引用本文：Jumbam B， Zasada IA, Bensch K, Crous PW, Aime MC（2025）。文章题目荆芥属植物的分类订正：新种、新名、新分型。人学报54:147-195。doi: 10.3114 / persoonia.2025.54.05。

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来源期刊

Persoonia MYCOLOGY-

CiteScore

17.70

自引率

5.50%

发文量

审稿时长

3 months

期刊介绍： Persoonia aspires to publish papers focusing on the molecular systematics and evolution of fungi. Additionally, it seeks to advance fungal taxonomy by employing a polythetic approach to elucidate the genuine phylogeny and relationships within the kingdom Fungi. The journal is dedicated to disseminating high-quality papers that unravel both known and novel fungal taxa at the DNA level. Moreover, it endeavors to provide fresh insights into evolutionary processes and relationships. The scope of papers considered encompasses research articles, along with topical and book reviews.