• Title/Summary/Keyword: Korean Society of Mycology

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Peronospora bulbocapni, an Unreported Species Causing Downy Mildew on Corydalis ambigua in Korea

  • Choi, Young-Joon
    • The Korean Journal of Mycology
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    • v.46 no.4
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    • pp.505-510
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    • 2018
  • Peronospora is the largest genus of the order Peronosporales (Oomycota) and contains more than 550 accepted species, which causes downy mildew on many economically important crops. During a survey of downy mildew flora in Korea, a previously unreported species of Peronospora has been found on Corydalis ambigua. Based on molecular phylogenetic and morphological analyses, the causal agent was identified as Peronospora bulbocapni. This is the first report of Peronospora bulbocapni occurring on Corydalis ambigua in Korea.

Erysiphe orixae, a Powdery Mildew Occurring on Orixa japonica in Korea

  • Ji-Hyun Park;In-Young Choi;Lamiya Abasova;Hyeon-Dong Shin
    • The Korean Journal of Mycology
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    • v.51 no.4
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    • pp.307-311
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    • 2023
  • Powdery mildew anamorphs were collected from Orixa japonica (Rutaceae) in Korea. Based on the morphology and molecular phylogeny derived from the internal transcribed spacer regions and the large subunit gene of the rDNA, the fungus was identified as Erysiphe orixae. This powdery mildew species has been known to be endemic to Japan. This is the first report on E. orixae in Korea.

Slippery Scar: A New Mushroom Disease in Auricularia polytricha

  • Sun, Jie;Bian, Yinbing
    • Mycobiology
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    • v.40 no.2
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    • pp.129-133
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    • 2012
  • A new disease, the slippery scar, was investigated in cultivated bags of Auricularia polytricha. This fungus was isolated from the infected mycelia of cultivated bags. Based on morphological observation, rDNA-internal transcribed spacer and 18S sequence analysis, this pathogen was identified as the Ascomycete Scytalidium lignicola. According to Koch's Postulation, the pathogenicity of S. lignicola to the mycelia of A. polytricha was confirmed. The parasitism of this fungus on mushroom mycelia in China has not been reported before.

Confusing a Pollen Grain with a Parasite Egg: Infection or Traditional Medicine?

  • Mowlavi, Gholamreza;Paknezhad, Niloofar;Dupouy-Camet, Jean;Hugot, Jean Pierre
    • Parasites, Hosts and Diseases
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    • v.58 no.2
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    • pp.211-212
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    • 2020
  • Camacho & Reinhard stated in the December 2019 issue of the KJP (57: 621-625) that we confused a pollen grain with an Enterobius egg found in the grave of a female adolescent residing in ancient Tehran 7,000 years ago". We want here to clarify and answer to the outlined points in their article.

Widespread Occurrence of a CYP51A Pseudogene in Calonectria pseudonaviculata

  • Stravoravdis, Stefanos;LeBlanc, Nicholas R.;Marra, Robert E.;Crouch, Jo Anne;Hulvey, Jonathan P.
    • Mycobiology
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    • v.48 no.1
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    • pp.44-50
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    • 2020
  • Calonectria pseudonaviculata and C. henricotiae are two closely related fungal species responsible for boxwood blight disease of ornamental shrubs (Buxus spp.) in the U.S. and Europe. A previous study has shown isolates of the latter species, which is restricted to Europe, to be less sensitive to tetraconazole, an azole fungicide. In this study, we have analyzed the CYP51 paralogs for polymorphism in 26 genomes, representing geographically disparate populations of C. pseudonaviculata (n = 19) and C. henricotiae (n = 7), from the U.S., Europe, Asia, and New Zealand. The presence of a CYP51A pseudogene and lack of a functional CYP51A paralog in all C. pseudonaviculata genomes examined is a novel discovery for fungi and could have implications for the evolution of resistance to antifungal chemicals.

Basauxia and Ashtaangam of Hyphorrycetes from Southeast Asia.

  • Subramanian, C.V.
    • The Korean Journal of Mycology
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    • v.20 no.4
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    • pp.281-284
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    • 1992
  • Two interesting new hyphomycetes collected on rachis of an unidentified palm (Palmao) from Malayasia are described and their taxonomy is discussed in this paper. One of them is unique in producing basauxic conidiophores from conidiophore mother cells that are sessile, simple, cylindrical or cupulate, and solitary, gangliar, acrogenous, dry phragmoconidia. It is classified in a new genus Basauxia, as a new species, B. pulchra. The other hyphomycete is also unique in producing characteristic solitary, eight-celled, eight-armed gangliar conidia on simple conidiophores. A new genus, Ashtaangam is proposed for it in which it is placed as a new species, A. sundaram.

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Soybean Whetzelinia Rot in Korea (Whetzelinia에 의(依)한 콩 균핵병(菌核病))

  • Sung, Jae-Mo
    • The Korean Journal of Mycology
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    • v.10 no.2
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    • pp.93-94
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    • 1982
  • Soybean Whetzelinia rot caused by Whetzelinia sclerotiorum was observed in Jinju area. The diseased soybean plants showed withering and sudden collapse under field conditions. Diseased parts exhibited numerous black, irregularly-shaped scleratia embedded in dense white cottonly mycelium on tissue and in the pith of diseased stems. A sclerotium in the moist sand produced several apothecia under laboratary condition. The primary inoculum was supposed to originate from overwintered sclerotia of soil and soybean debris.

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Studies on Components of Sarcodon aspratus(II) (능이의 성분(成分)에 관한 연구(硏究)(제(第)2보(報)))

  • Park, Wan-Hee
    • The Korean Journal of Mycology
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    • v.11 no.4
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    • pp.159-162
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    • 1983
  • The dried carpophores of Sarcodon aspratus were examined for mineral elements and a protein-polysacccharide. Calcium, iron, zinc, magnesium, manganese, copper, lead, cadmium and mercury were detected in that order of contents by atomic absorption spectrometry and automatic mercury analysis. The protein-polysaccharide fraction extracted from the carpophore was found to contain 31.5% protein and 52.8% polysaccharide. The fraction showed no antitumor activity against sarcoma 180 implanted in mice.

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Two Unrecorded Macrofungal Species from Sohwangbyeongsan in Korea

  • Minkyeong Kim;Jin Sung Lee;Hyun Lee;Changmu Kim
    • The Korean Journal of Mycology
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    • v.52 no.1
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    • pp.25-33
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    • 2024
  • Indigenous fungi from Mount Sohwangbyeongsan, Odaesan National Park, Pyeongchanggun, Gangwon-do, South Korea, were investigated between 2013 and 2016. Our survey identified a total of 137 macrofungi species. These species were systematically categorized into 2 phyla, 4 classes, 15 orders, 41 families, and 73 genera. We identified collected specimens to the species level based on their morphology and rDNA sequences. Two species-Lentinellus flabelliformis and Tricholoma stans were newly recorded as macromycota in Korea.

Zoosporic Fungi Isolated From Four Egyptian Lakes and the Uptake of Radioactive Waste

  • Mahmoud, Yehia A.G.;Zeid, Alaa M. Abou
    • Mycobiology
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    • v.30 no.2
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    • pp.76-81
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    • 2002
  • Aquatic fungi from four brackish water lakes; Edku, Burullus and Manzala lakes which are located at the northern region of Egypt and Qarun lake that located in El-Fayoum city are reported in this manuscript. Twenty-nine fungal species which belong to 19 genera of aquatic fungi were recovered from water samples collected from the studied lakes. The most frequently isolated fungal species were Chytridium conferrop, Allomyces throughout and Rhizoclosmatium globosum. Thraustochytrium amoeboidum and Leptolegniella exoosporus have a moderately occurrence frequency. The maximum fungal count of recovered aquatic fungi was recorded in Burrullus lake followed by EdKu, Manzala and Qarun lakes. This study was extended to test the ability of six selected aquatic fungi(Brevilegniella keratinophila, Blastocladiella cystogena, Chytridium conferrop, Entophlyctis variabilis, Schizochytrium mangrovei and Thraustochytrium rosin), to uptake the radionuclide from their culture medium as a step to biologically treat the waste water or solution with radio-cesium and radio-cobalt. Fifty seven of Cs-137 and 35% of Co-60 could be removed from liquid waste by the selected aquatic fungi.