Brunneodinemasporium jonesii
Brunneodinemasporium jonesii Y.Z. Lu, Jian K. Liu & K.D. Hyde, in Lu, Liu, Hyde, Bhat, Xiao, Tian, Wen, Boonmee & Kang, Mycosphere 7(9): 1326 (2016)
Saprobic on decaying wood in freshwater stream (Lu et al. 2016). Sexual morph: undetermined. Asexual morph: Conidiomata dark brown to black, with a white to buff slimy conidial mass in center, solitary to gregarious, superficial, cupulate, setose. Conidiomatal wall composed of thick-walled, brown cells of textura angularis at base, become thick-walled, darker cells of textura porrecta towards periphery. Conidiomatal setae composed of two types: a) dark brown to black, conspicuous, subulate, unbranched, tapered towards the apex, thick- and smooth-walled (Fig. 50 b) pale brown to brown at base, become hyaline and obtuse at apex, inconspicuous, subcylindrical or irregular, straight or curved, unbranched, septa, smooth-walled (Fig. 50). Conidiophores formed from the innermost layers of basal stroma, hyaline, cylindrical, unbranched or branched, septate, smooth-walled. Conidiogenous cells 7–13 × 1–2.5 µm, hyaline, phialidic, lageniform to subcylindrical, integrated, determinate, smooth-walled, with moderate periclinal thickenings. Conidia 6–9.5 × 1.5–2 µm (x= 8 × 1.7 µm, n = 50), hyaline, fusiform, obtuse at apex, subtruncate at base, straight or curved, unicellular, smooth-walled, aguttulate or guttulate, with mucilaginous balls released at the conidial ends; connecting the conidia in short false chains. Chains of conidia arising from conidiogenous cells aggregated into a conspicuous slimy, dome-shaped mass.
Material examined: China, Guangxi Province, Fang Cheng Gang, on decaying wood in a freshwater stream, 15 May 2016, Yong-Zhong Lu, JHC17-1 (GZAAS 16–0062, holotype).
Brunneodinemasporium jonesii (GZAAS 16–0062, holotype). a, b Appearance of dark brown to black conidiomata on host surface. c Slide view of conidiomata. d, h, i, j Conidiomatal setae. e, f–g Basal stroma of conidioma bearing conidiophores and conidiogenous cells (stained by cotton blue). k–m Conidia (note conidia are connected by mucilaginous balls). Scale bars:c = 500 µm, d = 100 µm, e–g = 10 µm, h = 50 µm, i = 20 µm, j–m = 5 µm.
References:
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–80.
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