Re-evaluation of Mycoleptodiscus species and morphologically similar fungi.

IF 9.5 1区生物学 Q1 MYCOLOGY

Persoonia Pub Date : 2019-06-01 Epub Date: 2019-05-03 DOI:10.3767/persoonia.2019.42.08

M Hernández-Restrepo, J D P Bezerra, Y P Tan, N Wiederhold, P W Crous, J Guarro, J Gené

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引用次数: 33

Abstract

Mycoleptodiscus includes plant pathogens, animal opportunists, saprobic and endophytic fungi. The present study presents the first molecular phylogeny and revision of the genus based on four loci, including ITS, LSU, rpb2, and tef1. An extensive collection of Mycoleptodiscus cultures, including ex-type strains from the CBS, IMI, MUCL, BRIP, clinical isolates from the USA, and fresh isolates from Brazil and Spain, was studied morphologically and phylogenetically to resolve their taxonomy. The study showed that Mycoleptodiscus sensu lato is polyphyletic. Phylogenetic analysis places Mycoleptodiscus in Muyocopronales (Dothideomycetes), together with Arxiella, Leptodiscella, Muyocopron, Neocochlearomyces, and Paramycoleptodiscus. Mycoleptodiscus terrestris, the type species, and M. sphaericus are reduced to synonyms, and one new species is introduced, M. suttonii. Mycoleptodiscus atromaculans, M. coloratus, M. freycinetiae, M. geniculatus, M. indicus, M. lateralis (including M. unilateralis and M. variabilis as its synonyms) and M. taiwanensis belong to Muyocopron (Muyocopronales, Dothideomycetes), and M. affinis, and M. lunatus to Omnidemptus (Magnaporthales, Sordariomycetes). Based on phylogenetic analyses we propose Muyocopron alcornii sp. nov., a fungus associated with leaf spots on Epidendrum sp. (Orchidaceae) in Australia, Muyocopron zamiae sp. nov. associated with leaf spots on Zamia (Zamiaceae) in the USA, and Omnidemptus graminis sp. nov. isolated from a grass (Poaceae) in Spain. Furthermore, Neomycoleptodiscus venezuelense gen. & sp. nov. is introduced for a genus similar to Mycoleptodiscus in Muyocopronaceae.

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钩端分枝杆菌属和形态相似真菌的再评价。

分枝杆菌包括植物病原体、动物机会主义者、腐生真菌和内生真菌。本研究首次基于ITS、LSU、rpb2和tef1四个基因座对该属进行了分子系统发育和修正。对广泛收集的钩端支原体培养物，包括来自CBS、IMI、MUCL、BRIP的前型菌株、来自美国的临床分离株以及来自巴西和西班牙的新鲜分离株进行了形态学和系统发育研究，以解决其分类学问题。研究表明，感状细螺旋体是多系的。系统发育分析将细柄分枝杆菌与阿氏菌属、细柄分枝菌属、粗柄分枝杆菌属、新毛球酵母属和副细柄分枝虫属一起归入Muyocoponales（Dothieomycetes）。将模式种土分枝杆菌和球形分枝杆菌简化为同义词，并引入一个新种，即M.suttonii。萎缩分枝杆菌、科罗拉多分枝杆菌、freycinetiae分枝杆菌、膝状分枝杆菌、印度分枝杆菌、偏侧分枝杆菌（包括单侧分枝杆菌和可变分枝杆菌作为其同义词）和台湾分枝杆菌属于Muyocopron（Muyocoponales，Dothidomycetes），而亲缘分枝杆菌和轮状分枝杆菌属于Omnidemptus（Magnaporthales，Sordariomycets）。在系统发育分析的基础上，我们提出了澳大利亚的一种与表皮植物（兰科）上的叶斑有关的真菌Muyocopron alcornii sp.nov.、美国的与Zamia（Zamiaceae）上的叶斑有关的Muyocopon zamiae sp.nov..和从西班牙的一种草（Poceae）中分离的Omnidemptus graminis sp.novs。此外，将venezuelense gen.sp.nov.作为一个类似于Muyocoponaceae中Mycoleptodiscs的属引入。

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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.