Dataset Information

Additions to tribe Chromosereae (Basidiomycota, Hygrophoraceae) from China, including Sinohygrocybe gen. nov. and a first report of Gloioxanthomycesnitidus.

ABSTRACT: Sinohygrocybe gen. nov., typified by S.tomentosipes sp. nov., is described upon morphological and molecular evidence. The new genus is characterised by its sinuate to subdecurrent or short deccurent, usually furcate and interveined and relatively distant lamellae, dry and whitish tomentose stipe, thin-walled ellipsoid to oviod, non-constricted basidiospores and particularly elongated basidia and a ratio of basidiospore to basidium length of >5 to 8; it is close to genera Chromosera and Gloioxanthomyces of the tribe Chromosereae, but morphologically differs from Chromosera in less umbilicate basidiomata, tomentose stipe and usually longer basidia and differs from Gloioxanthomyces in more robust basidioma and less glutinous pileus and/or stipe surface. Phylogenetic analyses, with ITS-LSU-RPB2 data, also indicate that Sinohygrocybe forms a very distinct and independent clade at the generic level. In addition, a Chinese new record G.nitidus is described here.

SUBMITTER: Wang CQ

PROVIDER: S-EPMC6160846 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Additions to tribe Chromosereae (Basidiomycota, Hygrophoraceae) from China, including Sinohygrocybe gen. nov. and a first report of Gloioxanthomycesnitidus.

Wang Chao-Qun CQ Zhang Ming M Li Tai-Hui TH Liang Xi-Shen XS Shen Ya-Heng YH

MycoKeys 20180828 38

Sinohygrocybe gen. nov., typified by S.tomentosipes sp. nov., is described upon morphological and molecular evidence. The new genus is characterised by its sinuate to subdecurrent or short deccurent, usually furcate and interveined and relatively distant lamellae, dry and whitish tomentose stipe, thin-walled ellipsoid to oviod, non-constricted basidiospores and particularly elongated basidia and a ratio of basidiospore to basidium length of >5 to 8; it is close to gen ...[more]

PMID: 30275740

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Project description:Pterulaceae was formally proposed to group six coralloid and dimitic genera: Actiniceps (=Dimorphocystis), Allantula, Deflexula, Parapterulicium, Pterula, and Pterulicium. Recent molecular studies have shown that some of the characters currently used in Pterulaceae do not distinguish the genera. Actiniceps and Parapterulicium have been removed, and a few other resupinate genera were added to the family. However, none of these studies intended to investigate the relationship between Pterulaceae genera. In this study, we generated 278 sequences from both newly collected and fungarium samples. Phylogenetic analyses supported with morphological data allowed a reclassification of Pterulaceae where we propose the introduction of Myrmecopterula gen. nov. and Radulomycetaceae fam. nov., the reintroduction of Phaeopterula, the synonymisation of Deflexula in Pterulicium, and 53 new combinations. Pterula is rendered polyphyletic requiring a reclassification; thus, it is split into Pterula, Myrmecopterula gen. nov., Pterulicium and Phaeopterula. Deflexula is recovered as paraphyletic alongside several Pterula species and Pterulicium, and is sunk into the latter genus. Phaeopterula is reintroduced to accommodate species with darker basidiomes. The neotropical Myrmecopterula gen. nov. forms a distinct clade adjacent to Pterula, and most members of this clade are associated with active or inactive attine ant nests. The resupinate genera Coronicium and Merulicium are recovered in a strongly supported clade close to Pterulicium. The other resupinate genera previously included in Pterulaceae, and which form basidiomes lacking cystidia and with monomitic hyphal structure (Radulomyces, Radulotubus and Aphanobasidium), are reclassified into Radulomycetaceae fam. nov. Allantula is still an enigmatic piece in this puzzle known only from the type specimen that requires molecular investigation. A key for the genera of Pterulaceae and Radulomycetaceae fam. nov. is also provided here.

Dataset Information

Additions to tribe Chromosereae (Basidiomycota, Hygrophoraceae) from China, including Sinohygrocybe gen. nov. and a first report of Gloioxanthomycesnitidus.

Publications

Additions to tribe Chromosereae (Basidiomycota, Hygrophoraceae) from China, including <i>Sinohygrocybe</i> gen. nov. and a first report of <i>Gloioxanthomycesnitidus</i>.

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