The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

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Arzanlou et al. Cultural characteristics: Colonies on MEA reaching 35 mm diam after 14 d at 24 °C. Colonies velvety, rather compact, slightly elevated, with entire, smooth, whitish margin, dark olivaceousgreen in the central part. Specimen examined: Living culture, Feb. 1996, L. Marvanová, CBS 171.96. Ramichloridium pini de Hoog & Rahman, Trans. Brit. Mycol. Soc. 81: 485. 1983. Specimen examined: U.K., Scotland, Old Aberdeen, branch of Pinus contorta (Pinaceae), 1982, M.A. Rahman, ex-type strain, CBS 461.82 = MUCL 28942. Note: The culture examined (CBS 461.82) was sterile. For a full description see de Hoog et al. (1983). Ramichloridium strelitziae Arzanlou, W. Gams & Crous, sp. nov. MycoBank MB504551. Figs 16–17A. Etymology: Named after its host, Strelitzia. Ab aliis speciebus Ramichloridii conidiophoris brevibus, ad 40 μm longis, et cicatricibus rotundis, paulo protrudentibus distinguendum. In vitro: Submerged hyphae smooth, hyaline, thin-walled, 2–2.5 µm wide; aerial hyphae pale brown, verrucose. Conidiophores arising vertically from creeping aerial hyphae, clearly differentiated from the vegetative hyphae, subhyaline, later becoming pale brown, thickwalled, smooth or verruculose, with 1–3 additional septa; up to 40 µm long and 2 µm wide. Conidiogenous cells integrated, terminal, cylindrical, variable in length, 10–35 µm long, subhyaline, later turning pale brown, fertile part as wide as the basal part, proliferating sympodially, forming a straight rachis with slightly thickened and darkened, circular, somewhat protruding scars, approx. 0.5 µm diam. Conidia solitary, aseptate, smooth or verruculose, subhyaline, oblong, ellipsoidal to clavate, (3–)4–5(–5.5) × (1–)2(–2.5) µm, with truncate base and unthickened, non-pigmented hilum. Cultural characteristics: Colonies on MEA slow-growing, reaching 5 mm diam after 14 d at 24 °C, with entire margin; aerial mycelium rather compact, raised, dense, olivaceous-grey; reverse olivaceousblack. Specimen examined: South Africa, KwaZulu-Natal, Durban, near Réunion, on leaves of Strelitzia nicolai, 5 Feb. 2005, W. Gams & H. Glen, CBS-H 19776, holotype, culture ex-type CBS 121711. Zasmidium Fr., Summa Veg. Scand. 2: 407. 1849. Fig. 17. A. Ramichloridium strelitziae (CBS 121711). B. Veronaea japonica (CBS 776.83). C. Veronaeopsis simplex (CBS 588.66). Scale bar = 10 µm. In vitro: Submerged hyphae smooth, thin-walled, hyaline, with thin septa; aerial hyphae coarsely verrucose, olivaceous-green, thick-walled, with thin septa. Conidiophores not differentiated from vegetative hyphae, often reduced to conidiogenous Fig. 18. Zasmidium cellare (CBS 146.36). A–D. Micronematous conidiophores with terminal, integrated conidiogenous cells. E. Conidiogenous cell with pigmented, thickened and refractive scars. F–G. Primary and secondary conidia. Scale bar = 10 µm. 74
Ramichloridium and allied genera Fig. 19. Rhinocladiella anceps (CBS 181.65). A. Macronematous conidiophores. B–D. Conidial apparatus at different stages of development, resulting in semi-micronematous conidiophores and sympodially proliferating conidiogenous cells. E. Conidiogenous loci. F. Conidia. Scale bars = 10 µm. cells. Conidiogenous cells integrated, predominantly terminal, sometimes lateral, arising from aerial hyphae, cylindrical, pale brown; polyblastic, proliferating sympodially producing crowded, conspicuously pigmented, almost flat, darkened, somewhat refractive scars. Conidia in short chains, cylindrical to fusiform, verrucose, obovate to obconical, pale brown, base truncate, with a conspicuous, slightly pigmented, thickened and refractive hilum. Primary conidia sometimes larger, subhyaline, verrucose or smooth-walled, 0–4-septate, variable in length, fusiform to cylindrical; conidial secession schizolytic. Type species: Zasmidium cellare (Pers. : Fr.) Fr., Summa Veg. Scand. 2: 407. 1849. Zasmidium cellare (Pers. : Fr.) Fr., Summa Veg. Scand. 2: 407. 1849. Fig. 18. Basionym: Racodium cellare Pers., Neues Mag. Bot. 1: 123. 1794. ≡ Antennaria cellaris (Pers. : Fr.) Fr., Syst. Mycol. 3: 229. 1829. ≡ Cladosporium cellare (Pers. : Fr.) Schanderl, Zentralbl. Bakteriol., 2. Abt., 94: 117. 1936. ≡ Rhinocladiella cellaris (Pers. : Fr.) M.B. Ellis, in Ellis, Dematiaceous Hyphomycetes: 248. 1971. In vitro: Submerged hyphae smooth, thin-walled, hyaline, 2–3 µm wide, with thin septa; aerial hyphae coarsely verrucose, olivaceous-green, rather thick-walled, 2–2.5 µm wide, with thin septa. Conidiophores not differentiated from vegetative hyphae, often reduced to conidiogenous cells. Conidiogenous cells integrated, predominantly terminal, sometimes lateral, arising from aerial hyphae, cylindrical, 20–60 µm long and 2–2.5 µm wide, pale brown, proliferating sympodially producing crowded, conspicuously pigmented scars that are thickened and refractive, about 1 µm diam. Conidia cylindrical to fusiform, verrucose, obovate to obconical, pale brown, with truncate base, (6–)9–14(–27) × 2–2.5 µm, with a conspicuous, slightly pigmented, refractive hilum, approx. 1 µm diam. Primary conidia sometimes subhyaline, verrucose or smoothwalled, thin-walled, 0–1(–4)-septate, variable in length, fusiform to cylindrical. www.studiesinmycology.org Cultural characteristics: Colonies reaching 7 mm diam after 14 d at 24 °C. Colonies velvety, rather compact, slightly elevated with entire margin; surface dark olivaceous-green in the central part, margin smooth, whitish. Specimen examined: Wall in wine cellar, Jun. 1936, H. Schanderl, ATCC 36951 = IFO 4862 = IMI 044943 = LCP 52.402 = LSHB BB274 = MUCL 10089 = CBS 146.36. Notes: The name Racodium Fr., typified by Ra. rupestre Pers. : Fr., has been conserved over the older one by Persoon, with Ra. cellare as type species. De Hoog (1979) defended the use of Zasmidium in its place for the well-known wine-cellar fungus. Morphologically Zasmidium resembles Stenella Syd., and both reside in the Capnodiales, though the type of Stenella, S. araguata Syd., clusters in the Teratosphaeriaceae, and the type of Zasmidium, Z. cellare, in the Mycosphaerellaceae. When accepting anamorph genera as polyphyletic within an order, preference would be given to the well-known name Stenella over the less known Zasmidium, even though the latter name is older. Further studies are required, however, to clarify if all stenella-like taxa should be accommodated in a single genus, Stenella. If this is indeed the case, a new combination for Zasmidium cellare will be proposed in Stenella, and the latter genus will have to be conserved over Zasmidium. Chaetothyriales (Herpotrichiellaceae) The four “Ramichloridium” species residing in the Chaetothyriales clade do not differ sufficiently in morphology to separate them from Rhinocladiella (type Rh. atrovirens). Because of the pale brown conidiophores, conidiogenous cells with crowded, slightly prominent scars and the occasional presence of an Exophiala J.W. Carmich. synanamorph, Rhinocladiella is a suitable genus to accommodate them. These four species chiefly differ from Ramichloridium in the morphology of their conidial apparatus, which is clearly differentiated from the vegetative hyphae. The appropriate combinations are therefore introduced for Ramichloridium anceps, R. mackenziei, R. fasciculatum and R. basitonum. 75
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Studies in Mycology 58 (2007) The g
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Studies in Mycology The Studies in
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CONTENTS P.W. Crous, U. Braun and J
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lectotype for the genus by Clements
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Schubert K (2005a). Morphotaxonomic
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Crous et al. Table 1. Isolates for
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Crous et al. Table 1. (Continued).
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Crous et al. 100 10 changes 65 100
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Crous et al. Treatment of phylogene
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Crous et al. Teratosphaeria bellula
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Crous et al. 6. Conidiophores short
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Crous et al. Habit plant pathogenic
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Crous et al. Fig. 7. Catenulostroma
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Crous et al. system, consisting of
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Crous et al. Fig. 9. Penidiella col
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Crous et al. Fig. 12. Penidiella ri
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Page 72 and 73: Arzanlou et al. Table 1. (Continued
Page 74 and 75: Arzanlou et al. 10 changes Athelia
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Page 108 and 109: Dichocladosporium gen. nov. 10 chan
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Cladosporium herbarum species compl
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available online at www.studiesinmy
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Cladosporium sphaerospermum species
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Crous et al. The aim of the present
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Crous et al. 10 changes Athelia epi
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Crous et al. Table 1. Isolates used
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Crous et al. Table 1. (Continued).
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Crous et al. 0.1 expected changes p
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Crous et al. Fig. 6. Cladophialopho
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Crous et al. Fig. 11. Cladophialoph
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Crous et al. Fig. 13. Cladophialoph
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Crous et al. Fig. 15. Exophiala sp.
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Crous et al. Fig. 18. Cylindrosympo
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Crous et al. Fig. 19. Fusicladium a
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Crous et al. Fig. 22. Fusicladium f
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Crous et al. Fig. 24. Fusicladium p
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Crous et al. Fusicladium rhodense C
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Crous et al. Excluded taxa Polyscyt
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Crous et al. the conidial tips are
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Cladophialophora carrionii complex
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Hormoconis resinae and morphologica
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Fig. 6 Hormoconis resinae and morph
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Cladophialophora, 52 k , 54 k -55,
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Fusicladium phillyreae, 189 c , 191
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Ramichloridium epichloës, 60, 89 P
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Trimmatostroma salicis, 3 t , 5, 6
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The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

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