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Taxonomy and phylogeny of Sanguinoderma rugosum complex with descriptions of a new species and a new combination.

ABSTRACT: Sanguinoderma is distributed in tropical and subtropical areas as a member of Amauroderma s. lat., and the economic values of Sanguinoderma led to high attention in the taxonomic studies. Previously, 16 species have been developed into Sanguinoderma. In this study, the taxonomic system of Sanguinoderma was reconducted based on morphological and multi-gene phylogenetic analyses, especially making a distinction for Sanguinoderma rugosum complex. Morphological analysis was based on the notes of macro- and micro morphological observations. Multi-gene phylogenetic analyses were used maximum likelihood (ML) and Bayesian inference (BI) analyses inferred from combined dataset of ITS, nLSU, rpb2, tef1, mtSSU, and nSSU. Combined with morphological characters and phylogenetic evidence, the results demonstrated that S. rugosum complex consists of five taxa, in which Sanguinoderma leucomarginatum was described as a new species, and it is characterized by the orbicular pilei with white to buff margin when fresh and clavate apical cells of pileipellis with septa. In addition, Amauroderma preussii was transferred to Sanguinoderma as a new combination due to its blood-red color-changed pore surface; it is characterized by the funnel-shaped, greyish brown, and glabrous pilei with strongly incurved margin. Detailed descriptions and photographs of the two species were provided. With the extension of this study, 18 species were accepted in Sanguinoderma, and 12 species among them were distributed in China. A key to accepted species of Sanguinoderma was also provided.

SUBMITTER: Sun YF

PROVIDER: S-EPMC9811172 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Taxonomy and phylogeny of Sanguinoderma rugosum complex with descriptions of a new species and a new combination.

Sun Yi-Fei YF Fang Yu-Xuan YX Cui Bao-Kai BK

Frontiers in microbiology 20221221

Sanguinoderma is distributed in tropical and subtropical areas as a member of Amauroderma s. lat., and the economic values of Sanguinoderma led to high attention in the taxonomic studies. Previously, 16 species have been developed into Sanguinoderma. In this study, the taxonomic system of Sanguinoderma was reconducted based on morphological and multi-gene phylogenetic analyses, especially making a distinction for Sanguinoderma rugosum complex. Morphologi ...[more]

PMID: 36620035

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Project description:The wood-inhabiting fungi play an integral role in wood degradation and the cycle of matter in the ecological system. They are considered as the "key player" in wood decomposition, because of their ability to produce lignocellulosic enzymes that break down woody lignin, cellulose and hemicellulose. In the present study, four new wood-inhabiting fungal species, Adustochaetealbomarginata, Ad.punctata, Alloexidiopsisgrandinea and Al.xantha collected from southern China, are proposed, based on a combination of morphological features and molecular evidence. Adustochaetealbomarginata is characterised by resupinate basidiomata with cream to buff, a smooth, cracked, hymenial surface, a monomitic hyphal system with clamped generative hyphae and subcylindrical to allantoid basidiospores (12-17.5 × 6.5-9 µm). Adustochaetepunctata is characterised by resupinate basidiomata with cream, a smooth, punctate hymenial surface, a monomitic hyphal system with clamped generative hyphae and subcylindrical to allantoid basidiospores (13.5-18 × 6-8.2 µm). Alloexidiopsisgrandinea is characterised by resupinate basidiomata with buff to slightly yellowish, a grandinioid hymenial surface, a monomitic hyphal system with clamped generative hyphae and allantoid basidiospores (10-12.3 × 5-5.8 µm). Additionally, Alloexidiopsisxantha is characterised by resupinate basidiomata with cream to slightly buff, a smooth hymenial surface, a monomitic hyphal system with clamped generative hyphae and subcylindrical to allantoid basidiospores measuring 20-24 × 5-6.2 µm. Sequences of the internal transcribed spacers (ITS) and the large subunit (nrLSU) of the nuclear ribosomal DNA (rDNA) markers of the studied samples were generated. Phylogenetic analyses were performed with the Maximum Likelihood, Maximum Parsimony and Bayesian Inference methods. The phylogram, based on the ITS+nLSU rDNA gene regions, revealed that four new species were assigned to the genera Adustochaete and Alloexidiopsis within the order Auriculariales, individually. The phylogenetic tree inferred from the ITS sequences highlighted that Ad.albomarginata was retrieved as a sister to Ad.yunnanensis and the species Ad.punctata was sister to Ad.rava. The topology, based on the ITS sequences, showed that Al.grandinea was retrieved as a sister to Al.schistacea and the taxon Al.xantha formed a monophyletic lineage. Furthermore, two identification keys to Adustochaete and Alloexidiopsis worldwide are provided.

Dataset Information

Taxonomy and phylogeny of Sanguinoderma rugosum complex with descriptions of a new species and a new combination.

Publications

Taxonomy and phylogeny of <i>Sanguinoderma rugosum</i> complex with descriptions of a new species and a new combination.

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