Importance of type specimen study for understanding genus boundaries-taxonomic clarifications in Lepidoderma based on integrative taxonomy approach leading to resurrection of the old genus Polyschismium

Ronikier Anna; Janik Paulina; de Haan MyriamKuhnt AndreasZankowicz Monika

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Importance of type specimen study for understanding genus boundaries-taxonomic clarifications in Lepidoderma based on integrative taxonomy approach leading to resurrection of the old genus Polyschismium

机译：Importance of type specimen study for understanding genus boundaries-taxonomic clarifications in Lepidoderma based on integrative taxonomy approach leading to resurrection of the old genus Polyschismium

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Type specimens of four species of Lepidoderma (Myxomycetes, Amoebozoa)-L. crassipes, L. neoperforatum, L. perforatum, and L. stipitatum-have been studied using an integrative approach including application of traditional taxonomy methods, i.e., morphological study under stereoscopic and compound microscopes, detailed analysis of micromorphological characters using scanning electron microscopy, and molecular analysis by way of Sanger sequencing of molecular markers (nuc 18S rDNA and elongation factor 1-alpha gene, EF1A). Results of the study revealed that L. crassipes is conspecific with L. tigrinum, L. stipitatum is a malformed specimen of Diderma floriforme, whereas L. perforatum and L. neoperforatum represent two well-defined morphologically and genetically separate species. Phylogeny of Physarales shows the polyphyletic character of the genus Lepidoderma. The type species of Lepidoderma clusters together with Diderma, whereas other representatives of this genus form a monophyletic, well-supported clade. The species from this clade are proposed to belong to the genus Polyschismium described by A. Corda in 1842 that is resurrected and emended here. Nine species of Lepidoderma are transferred to Polyschismium. A new key to Didymiaceae including Polyschismium is provided.

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来源
《Mycologia》 |2022年第6期|1008-1031|共24页
作者
Ronikier Anna; Janik Paulina; de Haan MyriamKuhnt AndreasZankowicz Monika;
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作者单位

Polish Acad Sci;

Meise Bot Garden;

Leonhardstr 44, D-86415 Mering, Germany;

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正文语种英语
中图分类侵（传）染性病害;
关键词
18S rDNA; Amoebozoa; EF1A; Myxogastria; Myxomycetes; phylogeny; protists; SEM; taxonomy; 9 new taxa; SEQUENCE ALIGNMENT; AMOEBOZOA; CHOICE;

Importance of type specimen study for understanding genus boundaries-taxonomic clarifications in Lepidoderma based on integrative taxonomy approach leading to resurrection of the old genus Polyschismium

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