62 research outputs found
Capnodium paracoartatum S. Thungdee, S. Hongsanan, & R. Cheewangkoon 2023
No full text<i>Capnodium paracoartatum</i> Q. Tian, W.J. Li & K.D. Hyde ex S. Thungdee, S. Hongsanan, & R. Cheewangkoon, <i>sp.</i> <i>nov.</i> <p>Index Fungorum number: IF900896</p> <p>Typification details: Holotype, MFLU 19-2888; ex-type living culture, MFLUCC 14-0282.</p> <p>Distribution: Thailand</p> <p> Host: on living leaves of <i>Ficus</i> sp. (Moraceae)</p> <p> Originally described as <i>Capnodium paracoartatum</i> Q. Tian, W.J. Li & K.D. Hyde, in Li & Hyde, Fungal Diversity 100: 372 (2020) in Li <i>et al.</i> (2020), Nom. inval., Art. F.5.1 (Shenzhen).</p> <p> Notes: <i>Capnodium paracoartatum</i> was first introduced by Li <i>et al</i>. (2020). However, it was shown as invalid due to the absence of a required identifier citation, as per ‘Nom. inval., Art. F.5.1 Shenzhen’ (Index Fungorum (2023). This species was reported as saprobic on sugary exudates from insects and produced a thallus on the leaf surface. This thallus comprises brown to pale brown, sub-cylindrical, irregularly branched, septate, and constricted at the septa mycelium. The sexual morph of this species is similar to <i>Ca. coartatum</i> and the asexual morph of <i>Ca. paracoartatum</i> differs from <i>Ca. coartatum</i> by its conidial size. Li <i>et al</i>. (2020) mentioned that using conidial size alone is insufficient to distinguish <i>Capnodium</i> species. However, based on phylogenetic analyses, it has been determined that <i>Ca. paracoartatum</i> is a distinct species (Li <i>et al</i>. 2020, FIGURE 1 in this study). Consequently, we hereby validly establish <i>Ca. paracoartatum</i> as a recognized species.</p>Published as part of <i>Haituk, Supitchakorn Thungdee Sukanya, Withee, Patchareeya, Cheewangkoon, Ratchadawan, Suwannarach, Nakarin, Marasinghe, Diana S. & Hongsanan, Sinang, 2023, Unraveling Capnodiaceae species in Northern Thailand, pp. 143-156 in Phytotaxa 620 (2)</i> on page 148, DOI: 10.11646/phytotaxa.620.2.2, <a href="http://zenodo.org/record/10011254">http://zenodo.org/record/10011254</a>
FIGURE 2 in Neohormodochis septispora gen. et sp. nov. (Stictidaceae) from Yunnan Province, China
No full textFIGURE 2. Neohormodochis septispora (HKAS 124171, holotype). a Substrate. b, c Conidiomata. d, e Vertical section through conidiomata. f Crystals. g Conidiomatal wall. h, i Conidiogenous cells bearing conidia. j, k Conidial chains. l, m Developing conidia. n, o Conidia. p Germinal conidium. q, r Upper and lower view of cultures. Scar bar: d, e = 150 um, f, g, j, p = 30 um, h, i, k, n, o = 10 um, l, m = 5 um.Published as part of Wei, De-Ping, Gentekaki, Eleni, Wanasinghe, Dhanushka N., Hyde, Kevin D., To-Anun, Chaiwat & Cheewangkoon, Ratchadawan, 2022, Neohormodochis septispora gen. et sp. nov. (Stictidaceae) from Yunnan Province, China, pp. 247-261 in Phytotaxa 573 (2) on page 254, DOI: 10.11646/phytotaxa.573.2.5, http://zenodo.org/record/734997
Effect of Elevated CO2 during Low Temperature Storage on the Quality Attributes of Cut Spearmint
No full textFigure 5 from: Zhang S-N, Hyde KD, Jones EBG, Jeewon R, Cheewangkoon R, Liu J-K (2019) Striatiguttulaceae, a new pleosporalean family to accommodate Longicorpus and Striatiguttula gen. nov. from palms. MycoKeys 49: 99-129. https://doi.org/10.3897/mycokeys.49.30886
No full textFigure 5 Longicorpusstriataspora (epitype MFLU 18–1580, epi-paratype MFLU 18–1582). a, b Appearance of ascoma on host surface c–e vertical section through an ascoma, with a clypeus near the ostiole f ostiole with periphyses g apex of the neck, with somewhat interwoven pale brown hyphae or setae h–k ascus l peridium in vertical section m vertical section of the neck, with thicker angular cells n pseudoparaphyses o–r ascospores s ascospore in India ink and presenting a clear mucilaginous sheath t germinating ascospore u, v Colony on PDA. Scale bars: 500 μm (a), 200 μm (b), 100 μm (c–e), 10 μm (f, l, n–t), 50 μm (g), 20 μm (h–k, m)
Figure 3 from: He M-Q, Chuankid B, Hyde KD, Cheewangkoon R, Zhao R-L (2018) A new section and species of Agaricus subgenus Pseudochitonia from Thailand. MycoKeys 40: 53-67. https://doi.org/10.3897/mycokeys.40.26918
No full textFigure 3 Morphology of AgaricusangusticystidiatusA, B basidiomes C, D basidiospores E basidia and cheilocystidia
Figure 2 from: He M-Q, Chuankid B, Hyde KD, Cheewangkoon R, Zhao R-L (2018) A new section and species of Agaricus subgenus Pseudochitonia from Thailand. MycoKeys 40: 53-67. https://doi.org/10.3897/mycokeys.40.26918
No full textFigure 2 Maximium Clade Credibility tree of genus Agaricus based on ITS, LSU and tef1-α gene sequences with the outgroup Heinemannomyces sp. Posterior probability values equal or above 0.9 are annotated at the internodes. The 95% highest posterior density of divergence time estimation are marked by horizontal bars
Parafuscosporella lignicola L. Li & R. J. Xu 2023, sp. nov.
No full text<i>Parafuscosporella lignicola</i> L. Li & R.J. Xu, <i>sp. nov</i>. FIGURE 3 <p> <i>Index Fungorum number</i>: IF559931, <i>Facesoffungi number</i>: FoF 12889</p> <p> <i>Etymology</i>: Referring to the fungus dwelling on wood.</p> <p> <i>Holotype</i>: MFLU22-0101</p> <p> <i>Saprobic</i> on decaying twigs from freshwater habitats. <b>Asexual morph:</b> <i>Colonies</i> on natural substratum sporodochial, scattered, black without covering. <i>Mycelium</i> mostly superficial, partially immersed, composed of branched, smooth-walled, septate, hyaline to light brown hyphae. <i>Conidiophores</i> micronematous, mononematous, compact, septate, mostly subglobose to ellipsoidal in moniliform. <i>Conidiogenous cells</i> 11–19 × 7–9 μm (<i>x</i> = 14× 8 μm, n =20), holoblastic, monoblastic, integrated or discrete, terminal, ellipsoidal or cylindrical, hyaline, smooth-walled, sometimes with continuous proliferations. <i>Conidia</i> 15–25 × 8–13 μm (<i>x</i> = 22 × 11 μm, n =40) acrogenous, solitary, ellipsoidal, obovoid or pyriform, with a septum near the base, olivaceous when young, dark brown to black when mature, pale brown at basal cell, truncate at base, smooth-walled.</p> <p> <b>Sexual morph:</b> Undetermined.</p> <p> <b>Culture characteristics:</b> Conidia germinating on PDA within 48h. Germ tubes produced from the basal cell. Colonies reaching 30 mm at room temperature in dark for one month, on PDA medium, flat, velutinous, light grey from the center then becoming brown towards surface, sparse mycelium on the surface, irregular margin. Sporulated conidia in cultures after 10 days. <i>Conidiophores</i> micronematous, branched, sometimes reduced to a single conidiogenous cell, hyaline to pale brown. <i>Conidiogenous cells</i> monoblastic, holoblastic, integrated, cylindrical, hyaline to pale brown, smooth-walled. <i>Conidia</i> 10–25 × 8–14 μm (<i>x</i> = 17 × 11 μm, n=20), acrogenous or pleurogenous, globose to subglobose, olivaceous when young, medium brown to dark brown when mature, sometime with continuous proliferations (FIGURE. 4).</p> <p> <b>Known distribution:</b> Thailand</p> <p> <b>Material examined</b>: Thailand, Nang Lae, Mueang Chiang Rai, Chiang Rai Province, (99°52′52.93″E, 20°3′2.52″N), saprobic on decaying wood submerged in a freshwater stream, 18 July 2020, R.J Xu, MD-5 (MFLU22- 0101 <b>holotype</b>), ex-living culture MFLUCC 23-0047. Thailand, Mushroom Research Center (M.R.C.), Chiang Mai Province, (98°46′44.28″E, 19°7′7.62N ″), unidentified decaying wood in freshwater habitat, 13 July 2020, R.J Xu, MD-5-3 (MFLU22-0102), living culture MFLUCC 23-0048.</p> <p> <b>Notes:</b> Morphologically, <i>Parafuscosporella lignicola</i> is similar to <i>P. aquatica</i>, <i>P. moniliformis</i>, <i>P. mucosa</i>, <i>P. nilotica, P. obovate</i> and <i>P. pyriformis</i> in having micronematous, mononematous conidiophores; monoblastic, integrated, globose, subglobose, ellipsoidal conidiogenous cells; subglobose, ellipsoidal or pyriform, dark brown to black conidia. However, <i>P. lignicola</i> has moniliform, ellipsoidal conidiophores, ellipsoidal or cylindrical conidiogenous cells and the smallest conidia in the genus (Boonyuen <i>et al</i>. 2016, Yang <i>et al</i>. 2016, 2017, Boonmee <i>et al</i>. 2021).</p> <p> Phylogenetic analysis also shows that <i>Parafuscosporella lignicola</i> has its own distinct lineage compared to other species of <i>Parafuscosporella</i> and form a sister group with <i>P. ellipsoconidiogena</i> (FIGURE 2). However, <i>P. ellipsoconidiogena</i> can be distinguished from <i>P. lignicola</i> by having doliiform, fusiform conidiophores, fusiform conidiogenous cells and larger conidia (27.5–33 × 15–20 μm <i>vs.</i> 15–25 × 8–13 μm) (Boonyuen <i>et al</i>. 2021).</p>Published as part of <i>Li, Lu, Xu, Rong-Ju, Luo, Zong-Long, Zhao, Qi & Cheewangkoon, Ratchadawan, 2023, Parafuscosporella lignicola sp. nov. (Fuscosporellaceae), from a freshwater habitat in northern Thailand, pp. 141-152 in Phytotaxa 597 (2)</i> on pages 145-148, DOI: 10.11646/phytotaxa.597.2.4, <a href="http://zenodo.org/record/7929317">http://zenodo.org/record/7929317</a>
Re-evaluation of Cryptosporiopsis eucalypti and Cryptosporiopsis-like species occurring on Eucalyptus
No full textCryptosporiopsis eucalypti is a common follicolous pathogen of Eucalyptus species in tropical and temperate regions where these trees are grown in plantations. The taxonomy of C. eucalypti is confused by the fact that it is phylogenetically unrelated to the type species of Cryptosporiopsis (Cryptosporiopsis nigra = C. scutellata, Helotiales). The aim of this study was to resolve the taxonomic position of C. eucalypti based on morphology and phylogenetic inference. Thirty-two Eucalyptus leaf samples with symptoms typical of C. eucalypti infection were collected from 10 tropical and temperate countries across four continents. Cultures were established from single conidia, as well as from ascospores of a previously unreported teleomorph state. DNA sequences were obtained for the 28 S nrDNA, the internal transcribed spacers of the nrDNA operon, and beta-tubulin regions to determine generic and species-level relationships. DNA-sequence analysis showed that conidial and ascospore isolates of C. eucalypti have low intraspecific variation, although two collections from Australia and one from Uruguay represented two novel taxa. Based on the newly collected teleomorph stage, as well as the phylogenetic data, C. eucalypti is shown to represent a new genus closely related to Plagiostoma (Gnomoniaceae, Diaporthales) for which the names Pseudoplagiostoma gen. nov. and Pseudoplagiostomaceae fam. nov. (Diaporthales) are introduced. Two new species of Cryptosporiopsis (Dermateaceae, Helotiales) on Eucalyptus from Australia and California (USA) are also described
Supplementary material 1 from: Li L, Du H-Z, Thiyagaraja V, Bhat DJ, Phookamsak R, Cheewangkoon R (2024) Two novel freshwater hyphomycetes, in Acrogenospora (Minutisphaerales, Dothideomycetes) and Conioscypha (Conioscyphales, Sordariomycetes) from Southwestern China. MycoKeys 101: 249-273. https://doi.org/10.3897/mycokeys.101.115209
No full textSupplementary documen
Species of Mycosphaerella and related anamorphs on Eucalyptus leaves from Thailand
No full textSpecies of Mycosphaerella and their related anamorphs represent potentially serious foliar pathogens of Eucalyptus. The fungi treated in the present study were isolated from symptomatic Eucalyptus leaves collected in Thailand during June-October 2007. Species were initially identified based on morphological and cultural characteristics. Identifications were confirmed using comparisons of DNA sequence data of the internal transcribed spacers (ITS1, 5.8S nrDNA, ITS2) and the 28S nrDNA (LSU) regions. To help distinguish species of Pseudocercospora, the dataset was expanded by generating partial sequences of the translation elongation factor 1-¿ and actin genes. By integrating the morphological and molecular datasets, five new taxa were distinguished, namely Mycosphaerella irregulari, M. pseudomarksii, M. quasiparkii, Penidiella eucalypti and Pseudocercospora chiangmaiensis, while M. vietnamensis represents a new record for Thailand
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