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198 results for “Dothideomycetes”
FIGURE 2 in Saprobic Dothideomycetes in Thailand: Phaeoseptum hydei sp. nov., a new terrestrial ascomycete in Phaeoseptaceae
FIGURE 2. Phaeoseptum hydei (MFLU 17-0660, holotype). a, b. Appearance of ascomata on host substrate. c. Section of ascoma. d. Peridium. e. Pseudoparaphyses. f–j. Asci. k–n. Ascospores. o. Colony on PDA. Scale bars: b = 500 µm, c = 100 µm, d, e, k–n = 10 µm, f–j = 20 µm.
FIGURE 1 in Saprobic Dothideomycetes in Thailand: Phaeoseptum hydei sp. nov., a new terrestrial ascomycete in Phaeoseptaceae
FIGURE 1. RAxML tree based on analysis of a combined dataset of LSU, SSU, ITS and TEF partial sequences. Bootstrap support values for ML and MP higher than 60 % and Bayesian posterior probabilities (BYPP) for BI greater than 0.95 are defined above the internal branches respectively. The ex-type strains are in bold; the new isolate is in blue. The tree is rooted to Hysterobrevium angustatum (MFLUCC 16-0623) and Gloniopsis praelonga (CBS 112415) in the Hysteriales.
FIGURE 4 in Shiraiaceae, new family of Pleosporales (Dothideomycetes, Ascomycota)
FIGURE 4. Sexual stage of Shiraia bambusicola (epitype). (Figs A–D, F–M, O–P light microscopy and Figs E, N SEM). A. Ascostroma with yellow ascospore mass. B. Cross section of ascostroma. Note the sexual locules lining the periphery (a) and the asexual locules near the centre (b). The outer part is pink, while the inner part is white to light pink. C. Cross section of locules (fluorescent microscopy stained in Hoechst 33258). D. Vertical section of ascostroma. E. Tissue of locule wall. Note the cells of textura angularis at the inside fusing with cells of textura intricata at the outside. F. Pseudoparaphyses (cotton blue reagent staining). G. Asci and pseudoparaphyses. H–K. Asci. L–M. Apices of asci showing ocular chamber. N–P. Ascospores (P stained in lactic acid phenol Medan). Scale bars: A = 1 cm; B = 1.5 cm; C–D = 100 µm; E = 10 µm; F = 20 µm; G–K = 50 µm; L–M = 20 µm; N–P = 10 µm.
FIGURE 3 in Shiraiaceae, new family of Pleosporales (Dothideomycetes, Ascomycota)
FIGURE 3. Asexual state of Shiraia bambusicola (epitype). (Figs A–B, D–E, J–N light microscopy and Figs C, F–I SEM) A. Ascostroma on bamboo branches. Note that the ascostromata form at the end of branches, but below the leaf petioles. B. Ascostromata with yellow conidium mass. C. Cross section of ascostroma. Note the leaf sheath of the host bamboo with green drawing and asexual locule (arrowed). D–E. Asexual locule (D shows release of the conidia, E fluorescent microscopy stained in Hoechst 33258). F–G. Conidia growing on the wall of the conidiomata. H. Cells of the asexual locule. I. Conidium on short conidiophore. J–L. Conidia. M– N. Colony (face and reverse views) on PDA after 14 days at 25°C. Scale bars: A = 2 cm; B = 1 cm; C = 1 mm; D = 200 µm; E = 300 µm; F–G =20 µm; H–L = 10 µm.
FIGURE 1 in Shiraiaceae, new family of Pleosporales (Dothideomycetes, Ascomycota)
FIGURE 1. Phylogram constructed using MP analysis of 28S nrDNA nucleotide sequences. Bootstrap support values>50% are shown above the branch. Dothidea sambuci is the outgroup taxon. The original isolate numbers are noted after the species names.
FIGURE 2 in Shiraiaceae, new family of Pleosporales (Dothideomycetes, Ascomycota)
FIGURE 2. Shiraia bambusicola (holotype) A. Surface of stroma. B–C. Section of stroma in cotton blue reagent showing arrangement of locules. D. Section of locule wall. E–F. Six-spored asci and pseudoparaphyses. G. Ascus. H. Conidium. I. Muriform ascospore. Scale bars: C = 200 µm, D–I = 40 µm.
FIGURE 4 in Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)
FIGURE 4. Hysteropeltella moravica (holotype). A. Herbarium material. B. Appearance of taxon on substrate. C. Close up of the hysterothecium (Note: longitudinal slit-like opening) D. Cross section of ascoma. E. Peridium in section F. Slit-like opening of ascoma. G. Arrangement of asci inside the ascoma. H–K. Asci with 8 ascospores (Note blue staining in Melzer's reagent) L–N. Immature and mature, smooth-walled ascospores. Scale Bars: D–G = 20 µm, H–K = 15 µm, L–M = 5 µm.
FIGURE 5 in Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)
FIGURE 5. Gloeodiscus nigrorufus (holotype). A. Herbarium material. B. Ascomata on host substrate. C. Close up of ascoma. D. Section of ascoma. E. Close up of the peridium. F–G Asci bearing 8 ascospores stained in Melzer's reagent. H. Apical part of asci. I. Short, broad pedicel of asci. J. Cellular, septate pseudoparaphyses. K. Ascospore stained in Congo red. L–M. Ascospores with narrowly rounded edges. Scale Bars: D = 130 µm, E = 25 µm, F–G = 30 µm, H–I = 10 µm, J = 75 µm, K–L = 5 µm
FIGURE 3 in Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)
FIGURE 3. Grandigallia dictyospora (holotype). A. Herbarium material. B–C. Close up of the ascostroma. D–E. Cross section of locules. F. Close up of locule wall. G. Close up of ostioles. H. Narrow, cellular pseudoparaphyses. I–K. Asci with short pedicel bearing 8 ascospores. L–M. Ellipsoidal to fusoid ascospores with smooth wall. Scale Bars: D–E = 200 µm, F–G = 30 µm, H = 10 µm, I–K = 30 µm, L–M = 5 µm.
FIGURE 2 in Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)
FIGURE 2. Dothideopsella agminalis (holotype). A. Ascomata on host substrate. B. Close up of ascomata. C. Section of ascoma. D. Close up of the peridium. E. Close up of the conical aperiphysate ostiole. F–H. Asci with short, knob-like pedicel bearing eight ascospores. I–K. Ascospores with smooth walls. Scale Bars: C = 300 µm, D = 30 µm, E = 50 µm, F–H = 80 µm, I–K = 20 µm.
FIGURE 1 in Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)
FIGURE 1. Dermatodothella multiseptata (isotype). A. Appearance of the fungus on herbarium material B. Ascostromata on substrate C. Close up of ascostroma. D-F. Section of ascostroma. G. Ostiole with well-developed neck. H. Close up of locule wall. I. Arrangement of asci inside the ascostroma. J. Filiform, septate, hyaline pseudoparaphyses. K. Immature ascus with 8 ascospores. L– M. Asci stained in cotton blue reagent. N–P. Immature ascospores with smooth walls (stained in cotton blue reagent). Scale Bars: D– G = 20 µm, H–K = 15 µm, L–M = 5 µm
FIGURE 6 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 6. Griggsia cyathea (NY 01102841, holotype). a. Material label. b. Appearance of sexual state on host. c. Section through ascoma. d. Peridium. e. Paraphyses. f–i. Mature asci. j Ascospore. k. Appearance of asexual state on host. l. Section through fruiting body m, n. Close up of conidiogenous cell with conidia. o. Peridium. p–u. Conidia. Scale bars: b, k = 200 µm, c = 100 µm, d, l = 50 µm. f–h = 30 µm, e, i, m–n = 20 µm, j, o–u = 10 µm.**i–j. Redrawn from Stevens and Dalbey (1919).
FIGURE 5 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 5. Dangeardiella macrospora (S-F215985). a. Herbarium material. b–c. Ascomata on host surface. d. Section through ascoma. e. Section of the papilla. f. Peridium. g. Pseudoparaphyses. h–j. Bitunicate asci. k–l. Ascospores. Scale bars: d = 100 µm, e = 50 µm, f–g = 25 µm, h–j = 50 µm, k–i = 20 µm.
FIGURE 3 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 3. Austropleospora osteospermi (BRIP 52234, holotype) a. Herbarium material b–c. Ascomata on host surface d. Section through ascoma. e Section through ostiole. f. Peridium. g. Pseudoparaphyses h. Immature ascus. i. Mature bitunicate asci. j. Apex of ascus k.. Ascospores. Scale bars: d = 50 µm, e–f = 25 µm, g = 10 µm, h–i = 25 µm, j–k = 15 µm.
FIGURE 1 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 1. Allosoma cestri (= Acrodesmis cestri) (GZU157-80, holotype). a. Herbarium material. b. Appearance of sexual and asexual states on leaf. c. Close-up of ascoma. d–f. Squash mount of ascomata. g–h. Immature and mature asci. i–j. Ascospores. k–m. Conidiophores with apical conidia. n. Conidiogenous cells. o–q. Conidia. Scale bars: b = 500 µm. c, k = 200 µm. d, e, g = 100 µm. f, l, m = 50 µm. h, n = 20 µm. i–j = 10 µm. o–q = 5 µm.
FIGURE 4 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 4. Austropleospora osteospermi (BRIP 52234, holotype). l. Pycnidia on host. m. Section of pycnidium. n. Pycnidial wall. o. Conidiogenous cells and developing conidia. p–q. Brown 3-septate conidia. Scale bars: m–o = 20 µm, p–q = 5 µm.
FIGURE 2 in Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)
FIGURE 2. Karschia talcophila (S- F203801, holotype). A. Herbarium material. b–c. Ascostromata on substrate. d–e. Sections through ascomata. f. Peridium. g–i Bitunicate asci. j–m. Ascospores. Scale bars: d = 50 µm, e = 100 µm, f = 50 µm, g–h = 20 µm, j–m = 5 µm.
FIGURE 3 in Trichopeltinaceae (Dothideomycetes), an earlier name for Brefeldiellaceae, with a new species of Trichopeltina
FIGURE 3. Trichopeltina asiatica (holotype). a–b. Thallus and thyriothecia on surface of host. c. Thyriothecium with central ostiole. d. Cells of thyriothecia when immature. e. Upper wall cells of thallus. f–g. Asci with apical ring. h. Conidium. i. Apical ring. j–k. Ascospores with 3 septa. l. Immature ascospores in 70% lactic acid. Scale bars: c = 50 µm, d–h, j–l = 10 µm, l = 2 µm.
FIGURE 5 in Trichopeltinaceae (Dothideomycetes), an earlier name for Brefeldiellaceae, with a new species of Trichopeltina
FIGURE 5. Pycnoderma bambusinum (syntype). a. Specimen. b. Thyriothecia clustering together on the host surface. c. Cells of upper wall of thyriothecium. d. Arrangement of asci. e. Immature asci. f–g. Mature asci. h–i. Muriform ascospores. Scales bars: c = 50 µm, d = 100 µm, e–h = 20 µm, i = 10 µm.
FIGURE 2. Wiesneriomyces laurinus. A in Wiesneriomyces a new lineage of Dothideomycetes (Ascomycota) basal to Tubeufiales
FIGURE 2. Wiesneriomyces laurinus. A. Sporodochia on natural substratum. B–C. Sporodochia with incurved setae arising from a prominent sporodochial stalk. D. Branched conidiophores. Scale bars: A–C = 20 µm, D = 10 µm.
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Allen Brain Atlas
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