Neoshiraia
Neoshiraia H.A. Ariyaw., in Ariyawansa et al., Scientific Reports 10(no. 12762): 10 (2020).
Index Fungorum number: IF 834500; Facesoffungi number: FoF 07107, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.
Associated with leaf lesions of Camellia sinensis. Sexual morph: Unknown. Asexual morph: Conidiomata pycnidial, scattered over the surface of the leaf lesions, semi-immersed to erumpent, black, globose to subglobose, uniloculate. Conidiomatal wall consisting of thick-walled cells of textura angularis that are dark brown to lightly pigmented, and become hyaline towards the conidiogenous region. Conidiophores reduced to conidiogenous cells. Conidiogenous cells enteroblastic, phialidic, hyaline, ampulliform to doliiform or cylindrical, discrete or integrated. Conidia hyaline, aseptate, obovoid to ellipsoidal, smooth-walled (adapted from Ariyawansa et al. 2020).
Type species: Neoshiraia camelliae H.A. Ariyaw., I. Tsai & Thambug.
Notes: Neoshiraia is characterised by pycnidial conidiomata, enteroblastic, phialidic, hyaline, ampulliform to doliiform conidiogenous cells and hyaline, aseptate, obovoid to ellipsoidal, smooth-walled conidia. Neoshiraia differs from Shiraia in having hyaline, aseptate, obovoid to ellipsoidal conidia while Shiraia has fusiform, muriform, asymmetrical, hyaline to light brown conidia (Ariyawansa et al. 2020). Neoshiraia is associated with leaf lesions of C. sinensis (tea) while Shiraia-like species are parasitic or endophytic on bamboo. Neoshiraia is morphologically and phylogenetically a distinct and well-defined genus in Shiraiaceae. Molecular markers available comprise RPB2, BTUB for N. taiwanensis and TEF-1, BTUB for N. camelliae.
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