Diversity of Rhizophydiales (Chytridiomycota) in Thailand: unveiling the hidden gems of the Kingdom.

IF 5.2 1区 生物学 Q1 MYCOLOGY
Vedprakash G Hurdeal, Joyce E Longcore, E B Gareth Jones, Kevin D Hyde, Eleni Gentekaki
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Abstract

Chytrids, often overshadowed by their other fungal counterparts, take center stage as we unravel the mysteries surrounding new species within Rhizophydiales and explore their unique characteristics. In the broader spectrum of chytrids, their significance lies not only in their roles as decomposers but also as key players in nutrient cycling within aquatic ecosystems as parasites and saprobes. Baited soil and aquatic samples collected from various provinces of Thailand, yielded new species of the Rhizophydiales (Chytridiomycota), some of which expanded previously single species genera. Our investigation incorporated a combination of morphological and phylogenetic approaches, enabling us to identify these isolates as distinct taxa. The novel isolates possess distinguishing features, such as variations in size and shape of the sporangium and zoospores, that somewhat differentiate them from described taxa. To confirm the novelty of the species, we employed robust phylogenetic analyses using maximum likelihood and bayesian methods. The results provided strong support for the presence of eight distinct lineages within the Rhizophydiales, representing our newly discovered species. Furthermore, we employed Poisson Tree Processes to infer putative species boundaries and supplement evidence for the establishment of our new Rhizophydiales species. By meticulously exploring their morphological characteristics and genetic makeup, we expand the known catalogue of fungal diversity by describing Alphamyces thailandicus, Angulomyces ubonensis, Gorgonomyces aquaticus, G. chiangraiensis, G. limnicus, Pateramyces pingflumenensis, Terramyces aquatica, and T. flumenensis and also provide valuable insights into the intricacies of this order. This newfound knowledge not only enriches our understanding of Rhizophydiales but also contributes significantly to the broader field of mycology, addressing a critical gap in the documentation of fungal species. The identification and characterization of these eight novel species mark a noteworthy stride towards a more comprehensive comprehension of fungal ecosystems and their vital role.

泰国根瘤菌纲(糜烂菌科)的多样性:揭开泰国王国隐藏宝石的面纱。
在我们揭开根瘤菌纲(Rhizophydiales)中新物种的神秘面纱并探索其独特特征的过程中,常常被其他真菌同类所掩盖的糜烂菌成为了主角。在更广泛的糜烂菌范围内,它们的意义不仅在于作为分解者的角色,还在于作为寄生虫和吸液虫在水生生态系统的营养循环中扮演关键角色。从泰国各府采集的诱饵土壤和水生样本发现了根瘤菌纲(糜烂菌目)的新物种,其中一些物种扩大了以前的单种属。我们的调查结合了形态学和系统发生学方法,使我们能够将这些分离物确定为不同的类群。这些新的分离物具有显著的特征,如孢子囊和动物孢子的大小和形状的变化,这在一定程度上将它们与已描述的类群区分开来。为了证实该物种的新颖性,我们采用最大似然法和贝叶斯法进行了稳健的系统发育分析。结果有力地证明了根瘤菌纲中存在八个不同的系,代表了我们新发现的物种。此外,我们还利用泊松树过程(Poisson Tree Processes)推断了推定的物种边界,为我们新发现的根瘤菌属物种的建立提供了补充证据。通过对其形态特征和遗传组成的细致探索,我们描述了泰国鹅膏菌(Alphamyces thailandicus)、乌邦鹅膏菌(Angulomyces ubonensis)、水生鹅膏菌(Gorgonomyces aquaticus)、蒋来鹅膏菌(G. chiangraiensis)、鹅膏菌(G. limnicus)、平流鹅膏菌(Pateramyces pingflumenensis)、水生鹅膏菌(Terramyces aquatica)和流鹅膏菌(T. flumenensis),从而扩展了已知的真菌多样性目录,同时也为了解该真菌纲的复杂性提供了宝贵的见解。这些新发现的知识不仅丰富了我们对根瘤菌纲的了解,还为更广泛的真菌学领域做出了重要贡献,填补了真菌物种记录方面的一个重要空白。这八个新物种的鉴定和特征描述标志着我们在更全面地了解真菌生态系统及其重要作用方面迈出了值得注意的一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ima Fungus
Ima Fungus Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
11.00
自引率
3.70%
发文量
18
审稿时长
20 weeks
期刊介绍: The flagship journal of the International Mycological Association. IMA Fungus is an international, peer-reviewed, open-access, full colour, fast-track journal. Papers on any aspect of mycology are considered, and published on-line with final pagination after proofs have been corrected; they are then effectively published under the International Code of Nomenclature for algae, fungi, and plants. The journal strongly supports good practice policies, and requires voucher specimens or cultures to be deposited in a public collection with an online database, DNA sequences in GenBank, alignments in TreeBASE, and validating information on new scientific names, including typifications, to be lodged in MycoBank. News, meeting reports, personalia, research news, correspondence, book news, and information on forthcoming international meetings are included in each issue
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