Fig 1 - uploaded by Ilya S. Prikhodko
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-Two-gene phylogenetic tree obtained with a Maximum Likelihood analysis of concatenated SSU and EF1α sequences from Lamproderma vietnamense (red font), 15 morphospecies of the genus Lamproderma, species of the genera Meriderma, Collaria, Diacheopsis, and members of the Didymiaceae, rooted with Barbeyella minutissima and Echinostelium bisporum (Echinosteliales). Labels depict species names and herbarium numbers of the studied specimens. Bold font indicates sequences obtained in this study; coloured font indicates Lamprodermataceae species with reticulated spores. Branch supports are shown only for ultrafast bootstrap replicates/Bayesian posterior probabilities ≥ 80/0.8; black dots indicate maximum supports in both analyses (= 100/1); the scale bar represents the mean number of nucleotide substitutions per site.
Source publication
A new species of Lamproderma (Myxomycetes), described herein as L. vietnamense, was recovered in the field on ground litter from mountain subtropical forests (Phia Oắc - Phia Đén National Park) of northern Vietnam. Morphological details were examined by light and scanning electron microscopy. The species is characterized by a distinct and unique co...
Contexts in source publication
Context 1
... Xie, Baele, & Suchard, 2018); based on the estimates by TRACER, the first 3.75 million generations were discarded for burn-in. Posterior probabilities for clades were exported to the ML-tree. Phylogenetic tree with combined supports was visualized using FigTree 1.4.4 (Rambaut, 2014) and edited using CorelDRAW 24.0. The final tree can be seen in Fig. 1. Diagnosis: Differs from other Lamproderma species by the following combination of characters: a bright blue, shiny and very thin membranous peridium, a small dome-shaped columella and ...
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... a two-gene phylogeny of representatives of the genera Meriderma Mar. Mey. & Poulain, Collaria Nann.-Bremek. and Lamproderma with Didymiaceae (Diachea Fr., Diderma Pers., Didymium Schrad., and Lepidoderma de Bary ex Rostaf.) as the closest clade was constructed and rooted with the genera Barbeyella Meyl. and Echinostelium de Bary (Echinosteliales) (Fig. ...
Context 3
... in the two-gene phylogeny with maximal support. They assumed a poorly resolved position within the clade that united Lamproderma columbinum (Pers.) Rostaf., which is the type taxon of the genus Lamproderma, together with L. arcyrioides (Sommerf.) Rostaf., L. cristatum Meyl., L. pulveratum Mar. Mey. & Poulain, and L. violace- um (Sommerf.) Torrend (Fig. 1). Three other species of Lamprodermataceae with reticulate spores that were included in the two-gene analysis (L. retirugisporum, L. lycopodiicola, and Diacheopsis reticulospora) Mar. Mey. & Poulain did not group together with L. vietnamense or with each other, but were scattered throughout the Lamproderma ...
Citations
... There are other species closely related to Lamproderma sp. and L. muscicola which tend to develop on bryophytes. This fits to the recently described L. vietnamense Novozh., Prikhodko, Fedorova, Shchepin et Schnittler (Novozhilov et al. 2022b), but also to Colloderma robustum (G. Lister ex Meyl.) ...
... & Poulain (Fiore-Donno et al. 2008;Poulain et al. 2011), now placed in the order Meridermatales (Leontyev et al. 2019). Further work in this direction pointed to the poly-or paraphyly of the species-rich genera Lamproderma (Fiore-Donno et al. 2012;Novozhilov et al. 2022b) and Physarum Pers. (Nandipati et al. 2012;Cainelli et al. 2020). ...
... In 2015, two papers were published aimed at resolving the phylogeny of Myxomycetes (Liu et al. 2015) and at identifying hidden biodiversity within the Trichia varia morphospecies (Feng and Schnittler 2015) using COI gene fragments. In both publications, primers were proposed for the amplification of two different gene fragments (see methods), which have not been widely used and have been applied only to describe four new species (Bortnikov et al. 2018;Novozhilov et al. 2019Novozhilov et al. , 2022bStephenson et al. 2020) and reveal the extent of hidden biodiversity within Lepidoderma chailletii (Shchepin et al. 2016) and Physarum albescens (Shchepin et al. 2021). ...
Myxomycetes, or plasmodial slime molds, are a monophyletic group ofamoeboid protists whose classification is based mainly on morphological features of fruiting bodies. Although published phylogenies based on one or two genetic markers have clarified the boundaries of the main order-level systematic groups, the position and composition of some families and genera of myxomycetes are still a topic for discussion. In this study, we reconstructed the phylogeny of the family Didymiaceae based on three independent genetic markers: the 18S rDNA gene, the translation elongation factor 1-alpha, and the cytochrome c oxidase subunit 1 gene. Maximum likelihood and Bayesian inference phylogenetic analyses produced congruent topologies and showed that of the five major genera of the family, only species of the genus Diachea form a monophyletic clade, while the other four genera are clearly para- or polyphyletic. Species of the genus Didymium form a monophyletic clade with the only species of the genus Mucilago.The polymorphic species Lepidoderma tigrinum is clearly placed among 13 species of Diderma, including the type species of the genus. All other studied species of Lepidoderma form a separate clade together with Diderma fallax. We thus extend the latest nomenclatural revisions by disbanding the genera Mucilago and Lepidoderma, whereby the single species of Mucilago is transferred to the genus Didymium and L. tigrinum to Diderma. Extended taxon sampling allows the transfer of more nivicolous species of the former genus Lepidoderma to Polyschismium.
The nivicolous species of the genus Diderma are challenging to identify, and there are several competing views on their delimitation. We analyzed 102 accessions of nivicolous Diderma spp. that were sequenced for two or three unlinked genes to determine which of the current taxonomic treatments is better supported by molecular species delimitation methods. The results of a haplotype web analysis, Bayesian species delimitation under a multispecies coalescent model, and phylogenetic analyses on concatenated alignments support a splitting approach that distinguishes six taxa: Diderma alpinum, D. europaeum, D. kamchaticum, D. meyerae, D. microcarpum and D. niveum. The first two approaches also support the separation of Diderma alpinum into two species with allopatric distribution. An extended dataset of 800 specimens (mainly from Europe) that were barcoded with 18S rDNA revealed only barcode variants similar to those in the species characterized by the first data set, and showed an uneven distribution of these species in the Northern Hemisphere: Diderma microcarpum and D. alpinum were the only species found in all seven intensively sampled mountain regions. Partial 18S rDNA sequences serving as DNA barcodes provided clear signatures that allowed for unambiguous identification of the nivicolous Diderma spp., including two putative species in D. alpinum.
