Ascomycota, genera » Ascomycota, incertae sedis » Ajrekarella

Ajrekarella polychaetriae

Ajrekarella polychaetriae Kamat & Kalani, Mycopath. Mycol. appl. 24: 300 (1964)

 

 

Saprobic on dead stems of Jasminum calophyllum (Oleaceae). Sexual morph: undetermined. Asexual morph: Conidiomata 550–760 µm diam., 220–380 µm high, brown to dark brown, pycnidial, mostly solitary, occasionally gregarious, immersed to semi-immersed, oval to subglobose, unilocular, thick-walled, glabrous, ostiolate. Ostiole 165–390 × 130–320 µm, conical to triangular, single, centrally located. Conidiomatal setae pale brown to dark brown, lining the area of dehiscence, unbranched, septate at base, straight or curved, smooth and thick-walled, tapered to acute apices. Conidiomata wall 10–50 µm wide, composed of thick-walled, hyaline to brown cells of textura angularis. Conidiophores hyaline, septate, irregularly branched, arising from the inner layer cells of conidiomata. Conidiogenous cells 9–20 × 2–4 µm, hyaline, enteroblastic, annellidic, cylindrical to subcylindrical, with up to 4 annellations. Conidia 12–17 × 4–6 µm (mean = 14 × 4.8 µm; n = 30), hyaline, fusiform to broadly naviculate, narrowed and truncated at the base, acute at the apex, aseptate, guttulate, bearing tubular, filiform, flexuous appendages (13–24 µm long) at both ends, apical appendage mostly 1, occasionally 2, unbranched, arising from the top of the conidia, basal appendages 2–5, unbranched or rarely forked.

 

Material examined: India, Poona, on the stems of Jasminum calophyllum (Oleaceae), I.K. Kalani, February 1961 (IMI 101970, holotype).

 

Notes: The conidiomatal setae presented in the original description (Sutton 1967a, 1980), but not observed in the present study.

 

 

Ajrekarella polychaetriae (IMI 101970, holotype) a, b Herbarium package and specimen. c, d Appearance of brown to dark brown conidiomata on the host. e, h–i Sections of peridium. f Ostiole. g, j Vertical sections of conidiomata. k–l Conidiophores, conidiogenous cells and developing conidia. m–r Conidia. Scale bars c = 200 µm, d = 500 µm, e = 20 µm, f, h, i = 100 µm, g, j = 200 µm, k–l = 20 µm, m–r = 5 µm.

 

Reference:

 

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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