Pleosporales » Parabambusicolaceae

Multilocularia

Multilocularia Phook., Ariyaw. & K.D. Hyde, in Li et al., Fungal Diversity 78: 10.1007/s13225-016-0366-9, [44] (2016).

Index Fungorum number: IF 551946; Facesoffungi number: FoF 01658, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on bamboo. Sexual morph: Ascostromata gregarious, clustered, immersed, visible as raised, black rows, on host surface, multi-loculate, elongate, glabrous, ostiolate. Locules clustered, immersed in ascostromata, globose to subglobose, or elongate hemisphaerical, ostiole individually central. Peridium thin- to thick-walled, slightly thick at the rim, composed of several layers of dark brown to black, pseudoparenchymatous cells, arranged in a textura angularis. Hamathecium composed of dense, broad cellular pseudoparaphyses, filamentous, distinctly septate, anastomosing among the asci, embedded in a hyaline, gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, clavate, long pedicellate, apically rounded, with well-developed ocular chamber. Ascospores overlapping 1–2-seriate, hyaline, ellipsoidal, with rounded ends, slightly curved, septate, slightly constricted at the central septum, smooth-walled, with small guttules. Asexual morph: Unknown (adapted from Li et al. 2016).

Type species: Multilocularia bambusae Phook., Ariyaw. & K.D. Hyde

Notes: Multilocularia is characterised by elongate ascostromata with multi-loculate and phragmosporous, hyaline, ellipsoidal ascospores. Multilocularia resembles Munkovalsaria in having ascostromata on the host, with asci having long pedicellate and ellipsoidal ascospores. Multilocularia differs from Munkovalsaria in having more locules than Munkovalsaria and ascospores are hyaline, while in Munkovalsaria ascospores are brown. In the phylogenetic analysis of Li et al. (2016), Multilocularia is closely related to Pseudomonodictys and Monodictys species in Parabambusicolaceae. Multilocularia differs from Pseudomonodictys and Monodictys based on the phylogenetic distinctiveness. Currently, Multilocularia is a distinct genus in Parabambusicolaceae. Molecular markers available for Multilocularia are ITS, LSU, SSU and TEF-1.

 

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