On Protomerulius and Heterochaetella (Auriculariales, Basidiomycota)

Spirin, Viacheslav; Malysheva, Vera; Miettinen, Otto; Vlasák, Josef; Alvarenga, Renato Lúcio Mendes; Gibertoni, Tatiana Baptista; Ryvarden, Leif; Larsson, Karl‐Henrik

doi:10.1007/s11557-019-01507-0

Cited by 14 publications

(7 citation statements)

References 25 publications

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“…In addition, four new combinations are proposed. Previous studies [ 4 , 15 , 21 , 22 , 23 ] and our results demonstrate that the Auriculariaceae is rich in corticioid fungi. However, additional studies are needed to understand the full scope of their diversity in subtropic and tropic regions.…”

Section: Discussionsupporting

confidence: 81%

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Taxonomy and Phylogeny of Corticioid Fungi in Auriculariaceae (Auriculariales, Basidiomycota): A New Genus, Five New Species and Four New Combinations

Nie

Nakasone

et al. 2023

JoF

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The Auriculariaceae accounts for most of the species in the Auriculariales, and all species in the family are wood-decaying fungi with gelatinous, crustaceous, or woody basidiomes. Many new taxa were published recently, but the taxonomy and phylogeny of the corticioid species in the Auriculariaceae are far from resolved. We undertook a comprehensive taxonomic and phylogenetic study of the family with emphasis on corticioid specimens collected from East and Southeast Asia. Phylogenetic analyses on concatenated ITS and 28S rDNA sequences of representative taxa of the Auriculariaceae and the genera Eichleriella and Heteroradulum were carried out that resolved five new lineages. Heterocorticium gen. nov. is established for two species with resupinate coriaceous basidiomes with smooth, pigmented hymenophores. Five new species, H. bambusicola (generic type), H. latisporum, Eichleriella alpina, E. bambusicola, and Heteroradulum maolanense, are described and illustrated. In addition, Heterochaete delicata, H. discolor, and H. sinensis are transferred to Eichleriella, whereas H. roseola is regarded as a synonym of Kneiffia discolor (= H. discolor). Eichleriella aculeobasidiata is treated as a synonym of Heterochaete sinensis (= E. sinensis). Heterochaete mussooriensis is transferred to Heteroradulum with Heteroradulum semis as a heterotypic synonym. The present study contributes to the understanding of species diversity, taxonomy, and phylogeny of corticioid fungi in Asia.

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Section: Discussionsupporting

confidence: 81%

“…Zhou & S.L. Liu, Crystallodon Alvarenga, Metulochaete Alvarenga, and Proterochaete Spirin & Malysheva [ 4 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Taxonomy and Phylogeny of Corticioid Fungi in Auriculariaceae (Auriculariales, Basidiomycota): A New Genus, Five New Species and Four New Combinations

Nie

Nakasone

et al. 2023

JoF

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“…Our phylogenetic analysis indicated that the Calypso ‐associated Protomerulius OTU forms a clade with the corticioid fungus Protomerulius brachysporus , which is widely distributed in northern Europe, North America and East Asia and reportedly decomposes fallen logs and dead branches of various conifers (Spirin et al., 2019). Given that (a) the OTU sequence detected in this study is grouped with P. brachysporus , (b) P. brachysporus is the only conifer‐dwelling species in the genus (Spirin et al., 2019) and (c) both our study sites are dominated by the conifers, the mycobiont of C . bulbosa is probably either synonymous with or closely related to P. brachysporus .…”

Section: Discussionmentioning

confidence: 93%

Subterranean morphology modulates the degree of mycoheterotrophy in a green orchid Calypso bulbosa exploiting wood‐decaying fungi

Suetsugu

Matsubayashi

2021

Functional Ecology

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1. Many vascular plants and aquatic organisms are not strictly autotrophic or heterotrophic but rather mixotrophic. Mixotrophy is a widespread nutritional strategy, merging autotrophy and heterotrophy to acquire organic carbon (C). Because all orchids are mycoheterotrophic during the early stages, many species are also predisposed to mycoheterotrophic nutrition during the mature stage. Consequently, many green orchids adopt partially mycoheterotrophy, a kind of mixotrophic strategy, obtaining carbon through autotrophy and mycoheterotrophy. However, the proportions of fungal-derived carbon reported for these mixotrophic orchids show considerable variation, even within species under similar light conditions and at similar growth stages. The factors promoting such variation remain to be fully elucidated.2. We investigated the nutritional mode of a green orchid Calypso bulbosa to determine whether coralloid rhizomes, which are often found in fully mycoheterotrophic orchids, affect the degree of mycoheterotrophy. To this end, we performed molecular barcoding and 13 C and 15 N analyses to identify the mycorrhizal partners and fungal dependency of C. bulbosa specimens with and without coralloid rhizomes.3. We found that C. bulbosa individuals were consistently colonized by an OTU of the wood-decaying fungal genus Protomerulius (Auriculariales), regardless of the presence of rhizomes. Furthermore, although both types of C. bulbosa specimens are partially mycoheterotrophic, as indicated by their higher 13 C and 15 N abundances, those with coralloid rhizomes exhibited a higher degree of mycoheterotrophy. Our results indicate that partial mycoheterotrophy in C. bulbosa is a flexible mechanism driven by subterranean morphology. 4. Although mixotrophy has evolved repeatedly in vascular plants and aquatic organisms, their trophic plasticity remains largely unexplored. Here we propose a novel mechanism modulating the degree of mycoheterotrophy in green orchids, providing a new perspective on the ecological plasticity of nutritional mode in mixotrophic organisms.

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“…In our phylogeny ( Figure 1 ), three Tremellochaete species, T. atlantica, T. australiensis , and T. japonica , are also closely related to E. candida , but they formed a separate clade with robust support; two other species placed in Tremellochaete, T. cerradensis and T. ciliata , are distantly related ( Figure 1 ). Tremellochaete may be a polyphyletic genus like other genera, e.g., Exidia and Exidiopsis (Yuan et al, 2018 ; Alvarenga et al, 2019 ; Spirin et al, 2019b ). In addition, Tremellochaete can be distinguished from Exidia by its clear and dense papillae on the hymenial surface (Malysheva and Spirin, 2017 ; Alvarenga et al, 2019 ; Figure 2 ).…”

Section: Discussionmentioning

confidence: 99%

“…Wang and Thorn, were described based on multigene phylogenies (Ye et al, 2020 ; Wang and Thorn, 2021 ). However, the genus is still polyphyletic in the phylogeny, and species of the genus are scattered in several genera of Auriculariaceae (Yuan et al, 2018 ; Spirin et al, 2019a , b ; Ye et al, 2020 ). Tremellochaete was reinstated to accommodate T. japonica (Yasuda), Raitv.…”

Section: Introductionmentioning

confidence: 99%

Two new species of Exidia sensu lato (Auriculariales, Basidiomycota) based on morphology and DNA sequences

Tohtirjap

Hou²,

Rivoire³

et al. 2023

Front. Microbiol.

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In the present study, fourteen Exidia-like specimens were collected from China, France, and Australia. Based on morphological characteristics and phylogenetic analyses using the internal transcribed spacer regions (ITS) and the large subunit of nuclear ribosomal RNA gene (nLSU), four species in Exidia sensu lato, including Exidia saccharina and Tremellochaete atlantica, and two new species, Exidia subsaccharina and Tremellochaete australiensis, were identified. The four species are described and illustrated in detail. E. saccharina and T. atlantica, two known species from China are reported for the first time. E. subsaccharina and T. australiensis, two new species from France and Australia, respectively are also described. E. subsaccharina is characterized by its reddish brown to vinaceous brown basidiomata, slightly papillate hymenial surface, and narrowly allantoid basidiospores without oil drop measuring 12.5–17.5 × 4.2–5.5 μm. It differs from the similar species, E. saccharina, by distinctly larger basidiospores (12.5–17.5 × 4.2–5.5 vs. 10–14.2 × 3.2–4.5 μm). Tremellochaete australiensis is characterized by its white to grayish blue basidiomata, obviously and densely papillate hymenial surface, and allantoid basidiospores with oil drop measuring 13.8–16.2 × 4.8–6.5 μm. It also can be distinguished from the similar species, T. atlantica and T. japonica, by its distinctly larger basidiospores (13.5–17.8 × 4–5.2 vs. 10–11.8 × 4–4.8 μm in T. atlantica; 9.4–11.8 × 3.5–4.2 μm in T. japonica).

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On Protomerulius and Heterochaetella (Auriculariales, Basidiomycota)

Cited by 14 publications

References 25 publications

Taxonomy and Phylogeny of Corticioid Fungi in Auriculariaceae (Auriculariales, Basidiomycota): A New Genus, Five New Species and Four New Combinations

Taxonomy and Phylogeny of Corticioid Fungi in Auriculariaceae (Auriculariales, Basidiomycota): A New Genus, Five New Species and Four New Combinations

Subterranean morphology modulates the degree of mycoheterotrophy in a green orchid Calypso bulbosa exploiting wood‐decaying fungi

Two new species of Exidia sensu lato (Auriculariales, Basidiomycota) based on morphology and DNA sequences

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