title: Gelatinomyces siamensis gen. sp. nov. (Ascomycota, Leotiomycetes, incertae sedis) on bamboo in Thailand.
abstract: Gelatinomyces siamensis gen. sp. nov., incertae sedis within Leotiomycetes, the Siamese jelly-ball, is described. The fungus was collected from bamboo culms and branches in Nam Nao National Park, Phetchabun, Thailand. It presents as a ping-pong ball-sized and golf ball-like gelatinous ascostroma. The asci have numerous ascospores, are thick-walled, and arise on discoid apothecia which are aggregated and clustered to form the spherical gelatinous structures. An hyphomycete asexual morph is morphologically somewhat phialophora-like, and produces red pigments. On the basis of phylogenetic analysis based on rRNA, SSU, and LSU gene sequences, the lineage is closest to Collophora rubra. However, ITS sequences place the fungus on a well-separated branch from that fungus, and the morphological and ecological differences exclude it from Collophora.
authors.affiliation: Applied Taxonomic Research Center, Khon Kaen University, Khon Kaen 40002, Thailand ; Department of Plant Sciences and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Niwat
authors.initials: N
authors.lastname: Sanoamuang
authors.forename: Wuttiwat
authors.initials: W
authors.lastname: Jitjak
authors.forename: Sureelak
authors.initials: S
authors.lastname: Rodtong
authors.forename: Anthony J S
authors.initials: AJ
authors.lastname: Whalley
keywords: Bambusa; Bambusicolous fungi; Collophora; Gelatinous ascostroma; Kao-niew ling; Molecular phylogeny; Polyspored asci; Red pigments; Siamese jelly-ball
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