Pleosporales - CBS - KNAW

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Fungal Diversity Fig. 52 Lophiotrema nucula (from UPS, lectotype). a Ascomata on the host surface. b Section of a partial ascoma. c Peridium structure near the apex. d, h Cylindrical asci in the pseudoparaphyses. e, f Upper part of the asci, showing the small ocular chamber near the apex. h Mature ascospores. i Pseudoparaphyses. Scale bars: a= 0.5 mm, b=100 μm, c, d=30 μm, e–i=10 μm
Fungal Diversity (<strong>CBS</strong> 627.86) was isolated by K. & L. Holm, who had examined the type specimen of L. nucula (Holm and Holm 1988), the culture of Lophiostoma macrostomum used in the analysis are unverified (see comment by Zhang et al. 2009b). For the purpose of this monograph we tentatively maintain Lophiotrema as distinct from Lophiostoma. Macroventuria Aa, Persoonia 6: 359 (1971). (Didymellaceae) Generic description Habitat terrestrial, saprobic. Ascomata small, solitary, scattered, or in groups, initially immersed, becoming erumpent, to nearly superficial, globose to subglobose, roughened with cylindrical setae erect from apex. Peridium thin, membranous. Hamathecium of cellular pseudoparaphyses, seems to easily disappear when mature. Asci bitunicate, somewhat obclavate to fusoid. Ascospores fusoid with broadly to narrowly rounded ends, hyaline, 1-septate, constricted at the septum. Anamorphs reported for genus: none. Literature: van der Aa 1971; von Arx and Müller 1975; Barr 1987a. Type species Macroventuria wentii Aa, Persoonia 6: 361 (1971). (Fig. 53) Ascomata 135–180 μm diam., rarely more than 200 μm diam., solitary, scattered or in groups, initially immersed, becoming erumpent, to nearly superficial, with basal wall remaining immersed in host tissue, globose to subglobose, broadly or narrowly conical, setae erect from the apical region of the ascomata, cylindrical or tapering to the rounded or pointed tip, brown, up to 90 μm long, 5–7.5 μm thick (Fig. 53a). Peridium, 25–35 μm thick, 2-layered, out layer composed of relatively thick-walled cells of textura angularis, cell wall up to 3 μm thick; inner layer cells with a thinner wall and subhyaline; near apex cells smaller (Fig. 53a). Hamathecium of cellular pseudoparaphyses, 1–2 μm thick, evanescing not sure. Asci 75– 93×24–30 μm, 8-spored, without pedicel, bitunicate, somewhat obclavate to fusoid (Fig. 53b). Ascospores 22–32×8–14 μm, 1– 3 seriate, fusoid with broadly to narrowly rounded ends, hyaline, 1-septate, constricted at the septum, smooth (Fig. 53b) (description adapted from van der Aa 1971). Anamorph: none reported. Material referred: USA, Nevada; Death Valley, plant litter, F.W. Went, 229, 1970 (<strong>CBS</strong> 526.71, holotype). Notes Morphology Macroventuria was formally established by van der Aa (1971) represented by M. anomochaeta and M. wentii based on its “near-hyaline, 1-septate ascospores, setose ascomata, and saprobic life style”. Almost all of the above characters (except the saprobic life style) point this group of fungi to Venturiaceae. Thus Macroventuria was assigned to this family as a relatively primitive genus (van der Aa 1971). Subsequently, von Arx and Müller (1975) assigned Macroventuria to Pseudosphaeriaceae (Dothideales), and this proposal was followed by Barr (1987a). Phylogenetic study Phylogenetic analysis based on combined SSU rDNA and LSU rDNA sequences indicated that both of Macroventuria anomochaeta and M. wentii form a robust clade with Leptosphaerulina argentinensis (Speg.) J.H. Graham & Luttr., L. australis, L. trifolii (Rostr.) Petr. and Platychora ulmi, which appear to share phylogenetic affinities with the Leptosphaeriaceae and Phaeosphaeriaceae, but detached from other members of Venturiaceae and Pleosporaceae (Kodsueb et al. 2006a). In addition, culture characters also support the close relationship between Macroventuria and Leptosphaerulina (Barr 1987a). Analysis based on five genes, i.e. SSU, LSU, RPB1, RPB2 andTEF1, indicated Macroventuria anomochaeta resides in the well supported clade of Didymellaceae (Zhang et al. 2009a). Concluding remarks The morphological characters, such as small ascomata and hyaline, 1-septate ascospores all point at Didymellaceae, thus the familial status of Macroventuria is verified. Mamillisphaeria K.D. Hyde, S.W. Wong & E.B.G. Jones, Nova Hedwigia 62: 514 (1996b). (?Melanommataceae) Generic description Habitat freshwater, saprobic. Ascomata superficial, scattered or gregarious, conical, carbonaceous, papillate. Hamathecium of dense, filliform, trabeculate pseudoparaphyses. Asci broadly clavate to clavate, with small ocular chambers and short pedicels. Ascospores of two types, (1): 2-4-seriate, ellipsoid, hyaline, slightly constricted at the main septum; with apical appendages at each end and around the ascospore; (2) 1-2-seriate, ellipsoid to fusoid, brown, with mucilaginous sheath around the ascospore (Hyde et al. 1996b). Anamorphs reported for genus: none. Literature: Hyde et al. 1996a, b. Type species Mamillisphaeria dimorphospora K.D. Hyde, S.W. Wong & E.B.G. Jones, Nova Hedwigia 62: 515 (1996b). (Fig. 54)
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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
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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
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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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Page 73 and 74: Fungal Diversity Fig. 33 Hadrospora
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Fungal Diversity composed of one ce
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Fungal Diversity Fig. 84 Saccharico
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Fungal Diversity and nearly black a
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Fungal Diversity dense, long trabec
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Fungal Diversity Anamorphs reported
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Fungal Diversity Fig. 94 Westerdyke
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Fungal Diversity Fig. 95 Wettsteini
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Fungal Diversity Fig. 96 Wilmia bra
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Fungal Diversity Current name: Astr
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Fungal Diversity spores are actuall
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Fungal Diversity Fig. 100 Sporormie
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Fungal Diversity Fig. 102 Kriegerie
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Fungal Diversity Phylogenetic study
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Fungal Diversity Fig. 104 Zeuctomor
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Fungal Diversity Fig. 105 Muroia ni
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Fungal Diversity pseudoparenchymato
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Fungal Diversity Eremodothis Arx, K
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Fungal Diversity Type species: Macr
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Fungal Diversity ascospores of Plat
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Fungal Diversity monoceras Alcorn n
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Fungal Diversity tomataceae, Melano
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Fungal Diversity 1987b). Based on a
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Fungal Diversity only do so under v
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Fungal Diversity Dennis RWG (1968)
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Fungal Diversity Kirk PM, Cannon PF
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Fungal Diversity Saccardo PA (1880)
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Fungal Diversity Winter G (1887) As
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Pleosporales - CBS - KNAW

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