Lolia aquatica
Lolia aquatica Abdel-Aziz & Abdel-Wahab
Index Fungorum number: IF518529
Holotype: IMI 398675
Etymology: From the Latin adjective aquaticus, in reference to the freshwater habitat
of the fungus.
Sexual morph: Undetermined. Asexual morph: Conidiomata acervular, 400–480 μm high, 380–540 μm diam, pearl white when wet, dull yellow brown when dry, superficial, single or aggregated. Peridium 57–80 μm thick, forming textura intricata, hyaline, embedded in gel. Conidiophores lining the acervuli wall and arising from innermost elements of the wall, loosely aggregated, branched and septate, colorless, smooth, embedded in gel. Conidiogenous cells cylindrical to sub-cylindrical, colorless, smooth, bearing a single terminal conidium. Conidiogenesis: ontogeny holoblastic with apical wall building; delimitation by a transverse septum; secession schizolytic. Conidia 31–45 × 7–10 μm (x̄ = 36 × 8.6 μm, n = 50), unicellular, hyaline, clavate, ellipsoidal, cylindrical, hyaline, smooth, thin-walled, solitary. Mean conidium length/width ratio = 4.2:1. Apical appendages 55–90 × 1.5–3 μm (x̄ = 68.6 × 2.6 μm, n = 20), three to five sub-apical cellular appendages, attenuating, tapering. Basal appendage 10–85× 1.5–3 μm (x̄ = 27.9 × 2.3 μm), excentric, cellular, attenuating, tapering. Both apical and basal appendages are on one side of the conidia and arising as tubular extension of the conidium body and not separated from it at maturity by septa. (Descriptions from Abdel-Aziz and Abdel-Wahab 2010)
Material examined: EGYPT, Sohag, El Balyana city, on decayed stem of Phragmites australis (Cav.) Steud. at irrigation canal, March 2005, F.A. Abdel-Aziz (Holotype, IMI 398675; ex-type culture, MF644 (JAMSTEC, Japan); iso-type, MD644 (authors’ culture collection).
Freshwater distribution: Egypt (Abdel-Aziz and Abdel-Wahab 2010; Abdel-Aziz 2016)
Fig 1. Lolia aquatica (holotype, CBS H-22130). a Vertical section of stroma. b Magnified part of the vertical section of the ascomata showing the peridium structure. c Ascomatal squash showing pseudoparaphyses and enlarged glabrous structures (arrowed). Scale bars: a = 100 μm, b = 10 μm, c = 5 μm. (Abdel-Aziz 2016; https://www.researchgate.net/publication/305276500_The_genus_Lolia_from_freshwater_habitats_in_Egypt_with_one_new_species)
Fig 2. Lolia aquatica (holotype, CBS H-22130). a–b Immature asci. c Mature ascus. d Fissitunicate dehiscence of the ascus. e Magnified part of the apical part of mature ascus showing the ocular chamber. f–g Ascospores in indian ink showing mucilaginous sheath. h Ascospore showing the rough ornamented surface. Scale bars: a–d = 10 μm, e–h = 5 μm. (Abdel-Aziz 2016; https://www.researchgate.net/publication/305276500_The_genus_Lolia_from_freshwater_habitats_in_Egypt_with_one_new_species)
Figs 2–6: Lolia aquatica. Differential interference contrast light micrographs (from holotype, mounted in water). 2. Vertical section through the gelatinous acervular (in phase contrast). 3-4. Magnified part of the peridial wall that forms textura intricata. 5. Young developing conidium at the tip of the conidiogenous cell. 6. Young conidium stained in toluidine blue shows initials of apical and basal appendages. Scale bars: 2 = 40 µm, 3–4 = 20 µm, 5–6 = 5 µm (Abdel-Aziz and Abdel-Wahab 2010; https://www.researchgate.net/publication/233670372_Lolia_aquatica_gen_et_sp_nov_Lindgomycetaceae_Pleosporales_a_new_coelomycete_from_freshwater_habitats_in_Egypt)
Fig. 7-10. Lolia aquatica. Differential interference contrast light micrographs of conidia at different stages of development. 10. Stained in toluidine blue. (Abdel-Aziz and Abdel-Wahab 2010; https://www.researchgate.net/publication/233670372_Lolia_aquatica_gen_et_sp_nov_Lindgomycetaceae_Pleosporales_a_new_coelomycete_from_freshwater_habitats_in_Egypt)
References
Abdel-Aziz FA (2016) The genus Lolia from freshwater habitats in Egypt with one new species. Phytotaxa 267:279–288
Abdel-Aziz FA, Abdel-Wahab MA (2010) Lolia aquatica gen. et sp. nov. (Lindgomycetaceae, Pleosporales), a new coelomycete from freshwater habitats in Egypt. Mycotaxon 114:33–42
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