Mycorrhizal synthesis, morpho-anatomical characterization of mycorrhizae, and evaluation of mycorrhiza-forming ability of Hydnum albidum–like species using monokaryotic and dikaryotic cultures

Sugawara, Ryo; Sotome, Kozue; Maekawa, Nitaro; Nakagiri, Akira; Endo, Naoki

doi:10.1007/s00572-021-01024-7

Cited by 6 publications

(5 citation statements)

References 34 publications

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“…( Di Marino et al, 2008 ; Münzenberger et al, 2012 ; Bubner et al, 2014 ), however S. flavorhizomorphae showed distinctive characters. Similar to other mycorrhizal descriptions of Sistotrema / Hydnum , both new species have a hydrophobic root surface, oil-rich hyphae with clamps, ampullate inflation and closed-anastomoses in emanating hyphae ( Agerer, Kraigher, & Javornik, 1996 ; Harrington & Mitchell, 2002 ; Agerer, 2006 ; Di Marino et al, 2008 ; Sugawara, Sotome, Maekawa, Nakagiri, & Endo, 2021 ). By contrast, S. flavorhizomorphae mycorrhizae show typical pseudoparenchymatous cells in the middle mantle and bright yellowish rhizomorphs attributing to yellowish incrustation surrounding hyphae, which have been never reported among Sistotrema / Hydnum species.…”

Section: Discussionsupporting

confidence: 70%

Two new species of Sistotrema s.l. (Cantharellales) from Japan with descriptions of their ectomycorrhizae

et al. 2022

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We describe two new species of resupinate Sistotrema sensu lato ( Cantharellales ) collected in Japan: S. flavorhizomorphae and S. chloroporum . Both species have urniform basidia with more than four sterigmata and monomitic hyphal system, oil-rich hyphae in subiculum, which is typical for this genus. Sistotrema chloroporum is characterized by poroid hymenophore partly yellowish-green, basidia 4-6-spored, medium-sized basidiospores (4.5-6.5 × 3.5-6 µm), and broadleaf forest habitat. Sistotrema flavorhizomorphae is characterized by hydnoid-irpicoid hymenophore, bright yellowish rhizomorphs, basidia 6-8-spored, small basidiospores (3-3.5 × 2.5-3 µm), and pine forest habitat. Phylogenetic trees inferred from the fungal nrDNA ITS and LSU and the rpb2 sequences supported that both species were distinct and grouped with other ectomycorrhizal Sistotrema and Hydnum species, but their generic boundary was unclear. Mycorrhizae underneath basidiomes of both species were identified and described via molecular techniques. Mycorrhizae of S. chloroporum have similar characteristics to those of other Sistotrema s.l. and Hydnum species, i.e., S. confluens and H. repandum , whereas S. flavorhizomorphae has a distinct morpho-anatomy, for example, a distinct pseudoparenchymatous mantle. Comprehensive characterizations of basidiomes and mycorrhizae improve the taxonomic analysis of mycorrhizal species of Sistotrema s.l.

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Section: Discussionsupporting

confidence: 70%

Two new species of Sistotrema s.l. (Cantharellales) from Japan with descriptions of their ectomycorrhizae

et al. 2022

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“…It could be that the lack of a saprobic community in our experimental system allowed ECM plants to also benefit from fresh litter in the soil. Another explanation for this phenomenon could be based on a specific ability of P. arrhizus, as most ECM fungi still have obscure mechanisms of action [ 56 , 57 ]. Notably, ECM seedlings growing with conspecific litter developed deeper root systems compared to non-ECM plants.…”

Section: Discussionmentioning

confidence: 99%

Shifts of Leaf Litter-Induced Plant-Soil Feedback from Negative to Positive Driven by Ectomycorrhizal Symbiosis between Quercus ilex and Pisolithus arrhizus

et al. 2023

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Ectomycorrhizas (ECM) are a common symbiotic association between fungi and various plant species in forest ecosystems, affecting community assemblages at the landscape level. ECMs benefit host plants by increasing the surface area for nutrient uptake, defending against pathogens, and decomposing organic matter in the soil. ECM-symbiotic seedlings are also known to perform better in conspecific soils than other species unable to carry the symbiosis, in a process referred to as plant-soil feedback (PSF). In this study, we tested the effects of different leaf litter amendments on ECM and non-ECM seedlings of Quercus ilex inoculated with Pisolithus arrhizus and how they altered the litter-induced PSF. Our experiment showed that the ECM symbiont induced a shift from negative PSF to positive PSF in Q. ilex seedlings by analysing plant and root growth parameters. However, non-ECM seedlings performed better than ECM seedlings in a no-litter condition, indicating an autotoxic effect when litter is present without ECM symbionts. Conversely, ECM seedlings with litter performed better at different decomposition stages, suggesting a possible role of the symbiosis of P. arrhizus and Q. ilex in recycling autotoxic compounds released from conspecific litter, transforming them into nutrients that are transferred to the plant host.

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“…These hyphal modifications have been previously described to be present in Polyporus s. str., Phellinus and Daedaleopsis [ 24 ] as well as on several species of lichens, ectomycorrhizal, and other taxa in the Agaricomycetes fungi [ 46 – 54 ]. These hyphal modifications seem to be associated with interlocking hyphae involved in the development of specific tissue accomplishing a specific function.…”

Section: Discussionmentioning

confidence: 99%

Taxonomy of the major rhizomorphic species of the “Melanopus group” within Polyporaceae in Yasuní National Park, Ecuador

et al. 2021

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Yasuní National Park in Ecuador is one of the most biodiverse places on earth. The fungi in this tropical rainforest are also diverse but have received little research attention. This research paper focuses on an important group of fungi in the family Polyporaceae and examines the genera Polyporus, Atroporus, and Neodictyopus that form aerial melanized cord-like structures called rhizomorphs. Phylogenetic analyses, macro and micromorphological descriptions of basidiomata and rhizomorphs, as well as cultural characterization were completed to better understand these ecologically important fungi. Here we describe four new species: Atroporus yasuniensis, Atroporus tagaeri, Neodictyopus sylvaticus, and Polyporus taromenane, and a new variety Polyporus leprieurii var. yasuniensis. The information presented in this study adds important new knowledge about the unusual rhizomorph producing fungi found in Yasuní National Park, Ecuador and other tropical rainforests.

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Mycorrhizal synthesis, morpho-anatomical characterization of mycorrhizae, and evaluation of mycorrhiza-forming ability of Hydnum albidum–like species using monokaryotic and dikaryotic cultures

Cited by 6 publications

References 34 publications

Two new species of <i>Sistotrema</i> s.l. (<i>Cantharellales</i>) from Japan with descriptions of their ectomycorrhizae

Two new species of <i>Sistotrema</i> s.l. (<i>Cantharellales</i>) from Japan with descriptions of their ectomycorrhizae

Shifts of Leaf Litter-Induced Plant-Soil Feedback from Negative to Positive Driven by Ectomycorrhizal Symbiosis between Quercus ilex and Pisolithus arrhizus

Taxonomy of the major rhizomorphic species of the “Melanopus group” within Polyporaceae in Yasuní National Park, Ecuador

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