Pleosporales - CBS - KNAW

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Fungal Diversity tentatively described the generic type of W. gigantospora as a representing of the type of W. gigaspora here. New family names, i.e. Pseudosphaeriaceae and Wettsteininaceae (as Wettsteiniaceae) and a new order, Pseudosphaeriales had been introduced to accommodate Wettsteinina and its synonym Pseudosphaeria (Höhnel 1907; Locquin 1972). After a systematic study, Wettsteinina was included in Pleosporaceae basedonits“Pleospora-type” centrum, and Pseudosphaeriaceae and Wettsteininaceae are treated as synonyms of Pleosporaceae (Shoemaker and Babcock 1987). Phylogenetic study Wettsteinina macrotheca (Rostr.) E. Müll., W. pachyasca (Niessl) Petr. and W. dryadis (Rostr.) Petr. were reported to be closely related to Pleomassaria siparia (Melanommataceae) (Kodsueb et al. 2006a), and W. lacustris (Fuckel) Shoemaker & C.E. Babc. nested within Lentitheciaceae (Schoch et al. 2009). The generic type has not been sequenced. Concluding remarks The most striking character for Wettsteinina is its asymmetrical ascospores, thick-walled obpyriform asci and lack of pseudoparaphyses at maturity. These characters are comparable with genera in the Capnodiales and Venturiales. The phylogenetic significance of these characters are not fully understood, while the hemibiotrophic or saprobic life style may indicate its polyphyletic nature (Shoemaker and Babcock 1987). Strains from the genus, in particular the generic type require DNA sequence data so that the phylogenetic placement can be investigated. Wilmia Dianese, Inácio & Dorn. -Silva, Mycologia 93: 1014 (2001). (Phaeosphaeriaceae) Generic description Habitat terrestrial, hemibiotrophic or biotrophic. Ascomata small, scattered, immersed, globose to subglobose, papillate. Peridium thin, composed of a few layers of brown, thickwalled cells of textura angularis to prismatica. Hamathecium comprising filliform, septate, rarely branching, evanescent, cellular pseudoparaphyses embedded in mucilage. Asci bitunicate, fissitunicate, cylindrical to clavate, with a short, furcate pedicel and ocular chamber. Ascospores fusoid, pale brown, 1-septate. Anamorphs reported for genus: see below. Literature: Dianese et al. 2001. Type species Wilmia brasiliensis Dianese, Inácio & Dorn.-Silva, Mycologia 93: 1014 (2001). (Fig. 96) Ascomata 175–240 μm high×95–145 μm diam., scattered, immersed, globose to subglobose; apex with a short papilla, 40–80 μm long, ostiolate, periphysate, periphyses up to 90 μm long (Fig. 96a and b). Peridium 6–15 μm wide, 1-layered, composed of 3–7 layers of brown, thickwalled cells of textura angularis to prismatica, cells 4– 9 μm diam., cell wall 2–4 μm thick (Fig. 96a and b). Hamathecium of long cellular pseudoparaphyses 2–3 μm broad, septate, rarely branching, embedded in mucilage, evanescent. Asci 65–95×9.5–14 μm (x ¼ 78:5 11:5mm, n=10), 8-spored, bitunicate, fissitunicate, cylindrical to clavate, with a short, furcate pedicel and a small ocular chamber (Fig. 96c, d and f). Ascospores 22.5–28×5– 8.5 μm (x ¼ 26:5 6:8mm, n=10), biseriate, fusoid with narrowly rounded ends, pale brown, 1-septate, constricted at the septum, the upper cell often shorter and broader than the lower one, smooth, with or without sheath (Fig. 96d and e). Anamorph: Conidiomata 170–200 μm high×85–130 μm diam., eustromatic, immersed, subglobose to irregular, ostiolate, brown. Peridium thin, 1–2 walllayers,6–8 μm thick, thicker near the apex. Ostiole 50–63 μm high×30–35 broad. Conidiogenous cells ampulliform or lageniform, phialidic, aseptate. Conidia 13–20×4–7 μm, ellipsoid, oblong, ovoid, hyaline (Dianese et al. 2001). Material examined: BRAZIL, Distrito Federal, Vargem Bonita, Fazenda Agua Limpa, on leaves of Memora pedunculata (Vell.) Miers, 18 May 1995, Carlos A. Inácio (UB Col. Microl 8438 holotype). Notes Morphology Wilmia was formally established by Dianese et al. (2001) as a monotypic genus represented by W. brasiliensis, which causes leaf spots on Memora pedunculata. The peridium of W. brasiliensis comprises a few layers of brown, thickwalled textura angularis to prismatica cells, and it also has cellular pseudoparaphyses, clavate asci, 1-septate pale brown ascospores (Dianese et al. 2001). Phylogenetic study None. Concluding remarks The dicotyledonous host habit of Wilmia brasiliensis seems in agreement with Leptosphaeriaceae rather than Phaeosphaeriaceae. But a verified conclusion can only be reached by further molecular phylogenetic study. Xenolophium Syd., Bulletin of the Bernice P. Bishop Museum, Honolulu, Hawaii 19: 96 (1925). (<strong>Pleosporales</strong>, genera incertae sedis)
Fungal Diversity Fig. 95 Wettsteinina gigantospora (from S, holotype of Massarina gigantospora). a Ascomata with protruding papilla scattered on the host surface. b Obpyriform thick-walled ascus with small apical apparatus. c Fissitunicate ascus. d Released hyaline ascospores. Note the distinct primary septum and less distinct secondary septa. e Ascospore with sheath. Scale bars: a=0.5 mm, b–d= 100 μm, e=50 μm Generic description Habitat terrestrial, saprobic on wood. Ascomata nearly superficial, scattered to gregarious, globose, large, with a conspicuous compressed papilla and large slit-like ostiole. Peridium carbonaceous. Hamathecium of dense, long trabeculate pseudoparaphyses, branching and anastomosing between and among asci. Asci 8-spored, clavate, with very
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Fungal Diversity DOI 10.1007/s13225
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Fungal Diversity Table 1 Major circ
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Fungal Diversity
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Fungal Diversity biocontrol agent o
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Fungal Diversity substrates and man
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Fungal Diversity 2. To investigate
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Fungal Diversity Table 3 (continued
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Fungal Diversity Fig. 2 Aigialus gr
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Fungal Diversity Fig. 3 Amniculicol
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Fungal Diversity Literature: Berkel
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Fungal Diversity Ascorhombispora L.
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Fungal Diversity Fig. 8 Astrosphaer
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Fungal Diversity Fig. 9 Asymmetrico
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Fungal Diversity Notes Morphology B
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Fungal Diversity Generic descriptio
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Fungal Diversity Anamorph: none rep
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Fungal Diversity Fig. 14 Bimuria no
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Fungal Diversity Fig. 15 Bricookea
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Fungal Diversity Fig. 16 Byssolophi
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Fungal Diversity Notes Morphology B
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Fungal Diversity the reaction of pe
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Fungal Diversity Fig. 21 Chaetomast
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Fungal Diversity Fig. 23 Cilioplea
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Fungal Diversity with one or two ve
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Fungal Diversity Moreau 1953; Munk
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Fungal Diversity Material examined:
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Fungal Diversity Fig. 28 Dothidotth
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Fungal Diversity Fig. 29 Dubitatio
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Fungal Diversity assigned Entodesmi
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Fungal Diversity fusoid to somewhat
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Fungal Diversity Fig. 33 Hadrospora
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Fungal Diversity Fig. 34 Halotthia
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Fungal Diversity Notes Morphology H
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Fungal Diversity some effused Hypox
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Fungal Diversity Fig. 38 Isthmospor
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Fungal Diversity Fig. 39 Kalmusia e
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Fungal Diversity ascospores were br
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Fungal Diversity furcate pedicel an
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Fungal Diversity Anamorph: none rep
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Fungal Diversity Material examined:
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Fungal Diversity Fig. 46 Lewia scro
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Fungal Diversity Fig. 47 Lichenopyr
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Fungal Diversity Loculohypoxylon M.
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Fungal Diversity cells small heavil
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Fungal Diversity upper place, septa
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Fungal Diversity
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Fungal Diversity (CBS 627.86) was i
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Fungal Diversity Fig. 54 Mamillisph
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Fungal Diversity Fig. 55 Massarina
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Fungal Diversity phaeria as a synon
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Fungal Diversity 5-8 μm diam., ind
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Fungal Diversity cell wall
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Fungal Diversity Fig. 60 Mixtura sa
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Fungal Diversity Fig. 61 Montagnula
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Fungal Diversity spored, bitunicate
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Page 127 and 128: Fungal Diversity Type species Neoph
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Page 131 and 132: Fungal Diversity Fig. 68 Ohleria mo
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Page 135 and 136: Fungal Diversity Fig. 70 Ophiobolus
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Page 185 and 186: Fungal Diversity Fig. 100 Sporormie
Page 189 and 190: Fungal Diversity Fig. 102 Kriegerie
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Page 211 and 212: Fungal Diversity 1987b). Based on a
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Page 217 and 218: Fungal Diversity Kirk PM, Cannon PF
Page 219 and 220: Fungal Diversity Saccardo PA (1880)
Page 221: Fungal Diversity Winter G (1887) As
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Pleosporales - CBS - KNAW

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