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Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae
No full textLiu, Ning-Guo, Liu, Jian-Kui, Sun, Ya-Ru, Jumpathong, Juangjun (2023): Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae. Phytotaxa 579 (3): 175-186, DOI: 10.11646/phytotaxa.579.3.3, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.
Stemphol Galactoside, a New Stemphol Derivative Isolated from the Tropical Endophytic Fungus Gaeumannomyces amomi
No full textA new stemphol derivative, stemphol 1-O-beta-D-galactopyranoside (1b), together with three known metabolites, stemphol (1a), indole-3-carboxylic acid, and kojic acid, has been isolated from the ethyl acetate extract of cultures of Gaeumannomyces amomi BCC4066, an endophytic fungus found on healthy parts of ginger (Alpinia malaccensis; Thai name Kha-pa). The structure of 1b was established via spectroscopic methods, including 2D NMR measurements and GC/MS experiments.Royal Golden Jubilee Ph D Program [4.V.CM/47/D.1
Stemphol Galactoside, a New Stemphol Derivative Isolated from the Tropical Endophytic Fungus Gaeumannomyces amomi
No full textA new stemphol derivative, stemphol 1-O-beta-D-galactopyranoside (1b), together with three known metabolites, stemphol (1a), indole-3-carboxylic acid, and kojic acid, has been isolated from the ethyl acetate extract of cultures of Gaeumannomyces amomi BCC4066, an endophytic fungus found on healthy parts of ginger (Alpinia malaccensis; Thai name Kha-pa). The structure of 1b was established via spectroscopic methods, including 2D NMR measurements and GC/MS experiments.Royal Golden Jubilee Ph D Program [4.V.CM/47/D.1
FIGURE 2 in Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae
No full textFIGURE 2. Tretospeira cheirospora (MFLU 22-0204, holotype) a, b Colonies on natural substrate. c–g Conidiophores and conidia. h–l Conidia. Scale bars: a = 500 µm, b = 100 µm, c–l = 20 µmPublished as part of Liu, Ning-Guo, Liu, Jian-Kui, Sun, Ya-Ru & Jumpathong, Juangjun, 2023, Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae, pp. 175-186 in Phytotaxa 579 (3) on page 181, DOI: 10.11646/phytotaxa.579.3.3, http://zenodo.org/record/755032
FIGURE 1 in Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae
No full textFIGURE 1. Maximum likelihood (RAxML) tree based on the combined LSU-ITS rDNA sequences. Bootstrap support values for ML greater than 75% and PP greater than 0.95 are given near nodes as ML-BS/PP. The tree is rooted with Noosia banksiae (CBS 129526), Periconia byssoides (MAFF 243872) and Periconia thailandica (MFLUCC 17-0065). Abbreviation T, ET, LT, NT, PT denote ex-type, ex-epitype, ex-lectotype, ex-neotype and ex-paratype strains. The new taxon is indicated in bold and blue. Three previously introduced hyphomycetous genera are indicated in blue.Published as part of Liu, Ning-Guo, Liu, Jian-Kui, Sun, Ya-Ru & Jumpathong, Juangjun, 2023, Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae, pp. 175-186 in Phytotaxa 579 (3) on page 179, DOI: 10.11646/phytotaxa.579.3.3, http://zenodo.org/record/755032
Tretospeira cheirospora N. G. Liu & Jian K. Liu 2023, sp. nov.
No full textTretospeira cheirospora N.G. Liu & Jian K. Liu, sp. nov. Index Fungorum number: IF900053 Etymology: in reference to its cheiroid conidia Holotype: MFLU 22-0204 Saprobic on decaying wood in terrestrial habitat. Sexual morph: Unknown. Asexual morph: Hyphomycetous. Colonies on natural substrate superficial, effuse, dark brown to black, velvety. Mycelium partly superficial, partly immersed, composed of septate, branched, brown hyphae. Conidiophores 34–61 × 5.5–9.5 μm (= 44.5 × 8 μm, n = 15), macronematous, mononematous, gregarious, erect, short, cylindrical, rounded at apex, straight or broadly curved, septate, unbranched, brown to dark brown, thick-walled. Conidiogenous cells 6.5–10.5 × 8–10.5 μm (= 8.5 × 9 μm, n = 15), monotretic, terminal, integrated, slightly swollen, dark brown, thick-walled. Conidia 64–77 × 15.5–24.5 μm (= 68.5 × 19 μm, n = 20), solitary, dry, cheiroid, obclavate to narrowly obpyriform, composed of 4 narrowly obclavate columns, fused laterally except at the apex, olivaceous brown to brown, distoseptate, slightly constricted at the septa, verrucose, with a circular, hyaline, gelatinous sheath around the hyaline tip. Culture characteristics: Conidia germinate on water agar within 72 hrs. Germ tubes are produced from the apex or base. Colonies superficial, irregularly circular, with raised surface and undulate edge, from above grey to whitish grey in the center, brownish gray at the edge, and from below, pale grey in the middle, brownish grey at the edge Material examined: THAILAND, Chiang Mai province, Mae Taeng, Mushroom Research Center, on decaying wood in terrestrial habitat, 18 July 2020, Y. R. Sun, MRCS9 (MFLU 22-0204, holotype), ex-type living culture, MFLUCC 22-0171. Notes: Tretospeira cheirospora resembles the type species in having erect, cylindrical, short conidiophores and monotretic conidiogenous cells bearing obclavate to narrowly obpyriform conidia composed of four columns (Pirozynski 1972). However, Tretospeira cheirospora has slightly longer conidiophores (34–61 μm vs. 15–50 μm) and larger conidia (64–77 × 15.5–24.5 μm vs. 40–60 × 17 μm) than those of T. ugandensis (Pirozynski 1972). Besides, conidia of T. cheirospora have a circular, hyaline, gelatinous sheath at the apex which is absent in T. ugandensis. Therefore, we introduce Tretospeira cheirospora as a new species based on morphology. In our phylogenetic analysis, Tretospeira cheirospora has close affinity with Banksiophoma australiensis (FIGURE 1). Banksiophoma is a monotypic genus represented by its coelomycetous asexual morph, which has pycnidial conidiomata and ellipsoid to globose or subglobose, hyaline, aseptate conidia (Crous et al. 2017). Thus their morphology can not be appropriately compared. Further discoveries of sexual morphs of both Banksiophoma and Tretospeira may bring a clearer understanding of the two genera.Published as part of Liu, Ning-Guo, Liu, Jian-Kui, Sun, Ya-Ru & Jumpathong, Juangjun, 2023, Phylogenetic placement of Tretospeira cheirospora in Phaeosphaeriaceae, pp. 175-186 in Phytotaxa 579 (3) on page 180, DOI: 10.11646/phytotaxa.579.3.3, http://zenodo.org/record/755032
2-Butyl-5-pentylbenzene-1,3-diol
No full textIn the title compound, C15H24O2, a natural dialkylresorcinol commonly named stemphol, the molecules are linked into C(6) and C22(4) chains and R44(16) rings by intermolecular O—H...O hydrogen bonds, creating molecular sheets parallel to the (010) plane. The alkyl chains are directed orthogonally away from these planes in almost complete extension
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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