Ascomycetes from Freshwater Habitats: Ascolacicola aquatica Gen. et sp. nov. and a New Species of Ascotaiwania from Wood Submerged in a Reservoir in Hong Kong

Abstract

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Newly recognised lineages of perithecial ascomycetes: the new orders Conioscyphales and Pleurotheciales

“…Asexual morphs associated with the Savoryellales were described for Canalisporium grenadoideum (as Ascothailandia grenadoidea sexual morph, Sri-indrasutdhi et al 2010 ) and three species of Ascotaiwania were linked with Brachysporiella -like dematiaceous hyphomycetes, A. mitriformis and A. sawadae (as Monotosporella , Ranghoo & Hyde 1998 , Sivichai et al 1998 ) and A. limnetica (this study). With some reservations Acarocybiopsis was suggested as another suitable genus for asexual morphs of Ascotaiwania ( Réblová & Seifert 2004 ).…”

“…All known life-histories discussed here were established experimentally, i.e. Ascotaiwania ( Ranghoo & Hyde 1998 , Sivichai et al 1998 , this study), Canalisporium ( Sri-indrasutdhi et al 2010 ), Conioscypha ( Réblová & Seifert 2004 , Zelski et al 2014 ), Helicoön farinosum ( Fallah et al 1999 ), Pleurothecium ( Fernández et al 1999 ), Pleurotheciella ( Réblová et al 2012 ), Sterigmatobotrys ( Réblová & Seifert 2011 ) and the new genera described in this study.…”

“…It forms a well-supported lineage that includes saprobic, lignicolous species from terrestrial, marine, brackish and freshwater environments and water-cooling towers (e.g. Jones & Eaton 1969 , Minoura & Muroi 1978 , Hyde & Jones 1988 , Chang et al 1998 , Ranghoo & Hyde 1998 ). Although Ranghoo (1998) introduced the family Savoryellaceae as a member of the Halosphaeriales in her PhD Thesis, a valid description was never published.…”

“…They share a set of characters including non-stromatic, immersed, semi-immersed to superficial, dark, coriaceous ascomata, often lying horizontally to the host, unitunicate asci with a non-amyloid apical annulus, partly disintegrating paraphyses and fusiform to ellipsoidal, transversely septate ascospores with hyaline polar cells and brown middle cells. Asexual morphs were experimentally proven for two species of Ascotaiwania (as Monotosporella , Ranghoo & Hyde 1998 , Sivichai et al 1998 ) and one species of Canalisporium (with Ascothailandia sexual morph; Sri-indrasutdhi et al 2010 ). The distant placement of Helicoön farinosum , the asexual morph of Ascotaiwania hughesii ( Fallah et al 1999 ), from members of the Savoryellales was revealed by rDNA data ( Boonyuen et al 2011 , Réblová et al 2012 ).…”

Fungal Planet description sheets: 320–370

“…The protologue described only one asexual morph ( Maggi et al 1978 ), but three were reported later by Constantinescu & Samson (1982) and Tzean & Chen (1989) . No sexual morph has been linked to this species, but another Triadelphia species, T. uniseptata , was reported as the asexual morph of Ascolacicola aquatica , a member of Sordariales ( Ranghoo & Hyde 1998 , Ranghoo et al 1999 ). BLAST homology searches with the LSU sequences of the ex-type isolates of T. heterospora (generic type), T. pulvinata and T. disseminata did not confirm an affinity of the genus with the Sordariales and the closest matches were members of Hypocreomycetidae in the orders Microascales (such as Dendroclathra lignicola EU873530 and Graphium fabiforme KM495387) and Hypocreales (such as Hypomyces subiculosus AJ459309 and Elaphocordyceps inegoensis AB027368) with 91–94 % identity.…”