Pleosporales » Dothidotthiaceae

Pleiochaeta

Pleiochaeta (Sacc.) S. Hughes, Mycol. Pap. 36: 39 (1951).

Ceratophorum subgen. Pleiochaeta Sacc., Syll. fung. (Abellini) 11: 622 (1895).

 Index Fungorum number: IF 9443; Facesoffungi number: FoF 07940, 6 morphological species (Species Fungorum 2022), 3 species with molecular data.

Pathogenic on host. Sexual morph: Unknown. Asexual morph: Conidiophores macronematous, mononematous or grouped in fascicles, simple, erect, straight to flexuous, or geniculate, hyaline to pale olivaceous, smooth. Conidiogenous cells mono- and polyblastic, integrated, terminal and intercalary, cylindrical. Conidia solitary, dry, subcylindrical to fusoid, mostly curved, narrowed to obtuse at the apex, truncate at the base, pale to dark brown, smooth, multiseptate; apical cell bears several long, hyaline, subulate appendages which are sometimes branched. Chlamydospores present or absent, brown to dark brown in chains or in groups (adapted from Marin- Felix et al. 2017).

Type species: Pleiochaeta setosa (Kirchner) S. Hughes

          Notes: Pleiochaeta is characterised by micronematous conidiophores, mono- and polyblastic conidiogenous cells, dry, subcylindrical to fusoid conidia and sometimes presence of brown to dark brown chlamydospores. Marin-Felix et al. (2017) reported the position of Pleiochaeta in the Dothidotthiaceae based on LSU and ITS phylogenetic analysis. Molecular markers available for Pleiochaeta are ITS, LSU, BTUB, GAPDH and RPB2.

 

 

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