First report of Chamonixia caespitosa (Boletaceae, Boletales) from Japan and its phylogeographic significance

Orihara, Takamichi; Ohmae, Muneyuki; Yamamoto, Kazuhito

doi:10.1016/j.myc.2015.08.005

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…However, recent systematic studies have revealed a considerable number of sequestrate (i.e. truffle-like and secotioid) fungal lineages in the family that have evolved independently from boletoid mushrooms (e.g., Castellano et al 2016;Desjardin et al 2008Desjardin et al , 2009Lebel et al 2012aLebel et al , 2012bNuhn et al 2013;Orihara et al 2010Orihara et al , 2016aOrihara et al , 2016bOrihara and Smith 2017;Smith et al 2015Smith et al , 2018Sulzbacher et al 2020;Vadthanarat et al 2018;Wu et al 2016). Although many sequestrate genera in Boletaceae comprise one or a few species, the genus Octaviania (orthographic variant: Octavianina), which belongs to the subfamily Leccinoideae (Wu et al 2014), is exceptionally diverse and includes more than 25 truffle-like species (Orihara et al 2012a;Paz et al 2014Paz et al , 2016.…”

Section: Introductionmentioning

confidence: 99%

Multilocus phylogenies reveal three new truffle-like taxa and the traces of interspecific hybridization in Octaviania (Boletaceae, Boletales)

et al. 2021

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Among many convergently evolved sequestrate fungal genera in Boletaceae (Boletales, Basidiomycota), the genus Octaviania is the most diverse. We recently collected many specimens of Octaviania subg. Octaviania, including several undescribed taxa, from Japan and the Americas. Here we describe two new species in subgenus Octaviania, O. tenuipes and O. tomentosa, from temperate to subtropical evergreen Fagaceae forests in Japan based on morphological observation and robust multilocus phylogenetic analyses (nrDNA ITS and partial large subunit [LSU], translation elongation factor 1-α gene [TEF1] and the largest subunit of RNA polymerase II gene [RPB1]). Based on specimens from the Americas as well as studies of the holotype, we also taxonomically re-evaluate O. asterosperma var. potteri. Our analysis suggests that O. asterosperma var. potteri is a distinct taxon within the subgenus Octaviania so we recognize this as O. potteri stat. nov. We unexpectedly collected O. potteri specimens from geographically widespread sites in the USA, Japan and Colombia. This is the first verified report of Octaviania from the South American continent. Our molecular analyses also revealed that the RPB1 sequence of one O. tenuipes specimen was identical to that of a closely related species, O. japonimontana, and that one O. potteri specimen from Minnesota had an RPB1 sequence of an unknown species of O. subg. Octaviania. Additionally, one O. japonimontana specimen had an unusually divergent TEF1 sequence. Gene-tree comparison and phylogenetic network analysis of the multilocus dataset suggest that these heterogenous sequences are most likely the result of previous inter- and intra-specific hybridization. We hypothesize that frequent hybridization events in Octaviania may have promoted the high genetic and species diversity found within the genus.

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Section: Introductionmentioning

confidence: 99%

Multilocus phylogenies reveal three new truffle-like taxa and the traces of interspecific hybridization in Octaviania (Boletaceae, Boletales)

et al. 2021

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“…The order is a globally distributed group of mushroom-forming fungi growing in most forest ecosystems (Chu-Chou and Grace 1983;Binder and Hibbett 2006). Despite thorough morphological (Rolland 1899;Høiland 1987;Pegler and Young 1989;Montecchi and Sarasini 2000) and phylogenetic coverage of the order Boletales (Kretzer and Bruns 1999;Binder and Bresinsky 2002;Binder and Hibbett 2006;Orihara et al 2016a) new phylogenetically supported genera are still being discovered, particularly representatives with a sequestrate habitat (Nuhn et al 2013;Wu et al 2014Wu et al , 2016. The sequestrate habitat has arisen in this order multiple times and a large number of sequestrate genera in Boletaeceae have been described: Carolinigaster M.E.…”

Section: Introductionmentioning

confidence: 99%

“…Sm. & S. Cruz (Crous et al 2018), Chamonixia Rolland (Binder and Bresinsky 2002;Orihara et al 2016a), Heliogaster Orihara & Iwase (Orihara et al 2010), Kombocles Castellano, T.W. Henkel & Dentinger (Castellano et al 2016), Octaviania Vittad.…”

Section: Introductionmentioning

confidence: 99%

Longistriata flava (Boletaceae, Basidiomycota) – a new monotypic sequestrate genus and species from Brazilian Atlantic Forest

Sulzbacher¹,

Orihara²,

Grebenc³

et al. 2020

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A new monotypic sequestrate genus, Longistriata is described based on collections from the Neotropical forest of Atlantic forest in Paraíba, Northeast Brazil – an area known for its high degree of endemism. The striking features of this new fungus are the hypogeous habit, the vivid yellow peridium in mature basidiomes, broadly ellipsoid basidiospores with a distinct wall that is ornamented with longitudinal striations and lageniform cystidia with rounded apices. Phylogenetic analysis, based on LSU and tef-1α regions, showed that the type species, Longistriata flava, is phylogenetically sister to the monotypic sequestrate African genus Mackintoshia in Boletaceae. Together these two species formed the earliest diverging lineage in the subfamily Zangioideae. Longistriata flava is found in nutrient-poor white sand habitats where plants in the genera Coccoloba (Polygonaceae) and Guapira (Nyctaginaceae) are the only potential ectomycorrhizal host symbionts.

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Paedomorphosis and Evolution of Sequestrate Basidiomycetes

et al. 2023

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First report of Chamonixia caespitosa (Boletaceae, Boletales) from Japan and its phylogeographic significance

Cited by 6 publications

References 27 publications

Multilocus phylogenies reveal three new truffle-like taxa and the traces of interspecific hybridization in Octaviania (Boletaceae, Boletales)

Multilocus phylogenies reveal three new truffle-like taxa and the traces of interspecific hybridization in Octaviania (Boletaceae, Boletales)

Longistriata flava (Boletaceae, Basidiomycota) – a new monotypic sequestrate genus and species from Brazilian Atlantic Forest

Paedomorphosis and Evolution of Sequestrate Basidiomycetes

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