Magnaporthales

Pseudohalonectriaceae

Pseudohalonectriaceae Hongsanan & K.D. Hyde

Index Fungorum number: IF553215    Facesoffungi number: FoF03355

Saprobic on wood and other plant material, commonly isolated in marine and terrestrial or freshwater habitats. Sexual morph: Ascomata erumpent to immerse with a protruding neck, cylindrical, periphysate necks, greenish yellow, bright yellow to brown. Neck conical, composed of parallel hyphae, outer hyphae outwardly directed, subglobose with enlarged ends, greenish yellow, periphysate. Peridium multi-layered. Paraphyses tapering towards the apex, thin-walled, attached to ascogenous hyphae. Asci 8-spored, unitunicate, cylindrical to clavate, with a J-, thimble-shaped, refractive apical ring. Ascospores overlapping uniseriate to biseriate, hyaline to slightly coloured and pale brown, pink/orange in mass in some species, cylindrical or ellipsoidal, straight to curved, usually multi-septate, constricted or not-constricted at the septa, smooth-walled. Asexual morph: Undetermined (adapted from Shearer & Zare-Maivan 1988, Hyde et al. 1999).

Type genus: Pseudohalonectria Minoura & T. Muroi

Notes: Pseudohalonectriaceae was introduced in Magnaporthales by Hongsanan et al. (2017) and comprises a single genus. Pseudohalonectria was previously placed in Lasiosphaeriaceae, Sordariales supported by the preliminary phylogenetic analysis of SSU sequence data by Chen et al. (1999). Shearer et al. (1999) transferred Pseudohalonectria to Magnaporthaceae. Klaubauf et al. (2014) found that Pseudohalonectria clustered with species of Magnaporthaceae, Pyriculariaceae and Ophioceraceae in the Magnaporthales in their phylogenetic study of Pyriculariaceae. Similar results were obtained by Maharachchikumbura et al. (2015, 2016), and they maintained Pseudohalonectria in Magnaporthales genera, incertae sedis.

Genus included in Pseudohalonectriaceae

Pseudohalonectria Minoura & T. Muroi

 

References

Chen W, Shearer CA, Crane JL. 1999 – Phylogeny of Ophioceras spp. based on morphological and molecular data. Mycologia 91, 84–94.

Hongsanan S, Maharachchikumbura SSN, Hyde KD, Samarakoon MC et al. 2017 – An updated phylogeny of Sordariomycetes based on phylogenetic and molecular clock evidence. Fungal Diversity 84, 25–41.

Hyde KD, Taylor JE, Fröhlich J. 1999 – Two new species of Pseudohalonectria from palms. Mycologia 91, 520–524.

Klaubauf S, Tharreau D, Fournier E, Groenewald JZ et al. 2014 – Resolving the polyphyletic nature of Pyricularia (Pyriculariaceae). Studies in Mycology 79, 85–120.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2015 – Towards a natural classification and backbone tree for Sordariomycetes. Fungal Diversity 72, 199–301.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016 – Families of Sordariomycetes. Fungal Diversity 79, 1–317.

Shearer A, Zare-Maivan H. 1988 – In vitro hyphal interactions among wood- and leaf-inhabiting Ascomycetes and Fungi Imperfecti from freshwater habitats. Mycologia 80, 31–37.

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus