Ascomycota, genera » Ascomycota, incertae sedis » Neottiospora

Neottiospora caricina

Neottiospora caricina (Desm.) Höhn., in Weese, Mitt. bot. Inst. tech. Hochsch. Wien 1(3): 78 (1924)

Facesoffungi number: FoF 07521

 

Foliicolous. Sexual morph: undetermined. Asexual morph: Conidiomata 110310 diam., 120270 µm high, olivaceous green to black, pycnidial, scattered to gregarious or confluent, subepidermal in origin, deeply immersed, ellipsoidal to globose, unilocular, glabrous, thick-walled, ostiole absent, but with a circular operculum, dehiscence by forming two lines between the operculum and upper conidiomatal wall. Conidiomatal wall 1025 µm wide, composed of thick-walled, olivaceous green to hyaline cells of textura angularis to textura prismatica at lateral and basal part, becoming relatively thick-walled, pale olivaceous green to hyaline cells of compact textura angularis at upper part. Conidiophores arising all around cavity of conidiomata, hyaline, cylindrical, branched, septate, smooth-walled. Conidiogenous cells 1020 × 23 µm, hyaline, enteroblastic, phialidic, clavate to subcylindrical, discrete or integrated, indeterminate, with periclinal thickenings at collarette zone, smooth-walled. Conidia 9–15 × 35 µm ( = 13 × 4 µm; n = 30), hyaline, fusiform to ellipsoidal, with an acute apex and a slightly truncate base, straight or slightly curved, aseptate, smooth-walled, guttulate, bearing an appendage at base, initially funnel-shaped but ultimately splitting into tentacular strands.

 

Material examined: on leaves of Carex pendula Huds. and C. riparia (R. Br.) Poir. (Cyperaceae), J.B. Mougeot, C. Nestler & W.P. Schimper - Stirpes Cryptogamae Vogeso-Rhenanae, Fasc. August 1850, (DAOM 59000); Austria, Wienerwald, Georgenberg nr. Purkersdorf, on leaves of Carex pendula, C. Keissler, (DAOM 81836); Canada, Ontario, Lanark County, Christie Lake, on leaves of Carex sp., 25 September 1965, R.A. Shoemaker, (DAOM 110354); cultivated on sterilized grass in agar at room temperature in light (21 October 1965 7 December 1965) (DAOM 110354).

 

Neottiospora caricina (DAOM 59000) a, b Herbarium package and specimen. c–e Appearance of olivaceous green to black conidiomata on the host. f, g Vertical sections of conidiomata (g from DAOM 81836). h–j Conidiomatal wall (j from DAOM 81836). k–n Conidiophores, conidiogenous cells and developing conidia. o–u Conidia. Scale bars c = 500 µm, d = 200 µm, e–g = 100 µm, h, j = 20 µm, i = 50 µm, k–n = 10 µm, o–u = 5 µm.

 

 Neottiospora caricina (DAOM 110354) a–d Herbarium package and specimen. e–g Appearance of black conidiomata on the host (e on sterilized grass in agar). h, k Conidiomatal wall (k on sterilized grass in agar). i–j Vertical sections of conidiomata. l–q Conidiophores, conidiogenous cells and developing conidia. r–v Conidia. Scale bars e = 200 µm, i–j = 100 µm, k = 50 µm, h, l–m = 10 µm, n–v = 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: pages279–801.

 

 

 

 

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