• The Korean Journal of Mycology
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• v.44 no.4
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• pp.355-359
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• 2016

During a survey of fungal diversity in insect guts in Korea, two fungal strains, EML-PGH2 and EML-PUKI88, were isolated from the gut of grasshopper and soldier fly larvae inhabiting the bulrush plants at a pond located in the Chonnam National University Arboretum, Gwangju, Korea. Based on their morphological characteristics and a phylogenetic analysis of the internal transcribed spacer (ITS1 and ITS2) and 5.8S rDNA sequences, the strains were identified as Blakeslea trispora. To our knowledge, the zygomycete species B. trispora has not been previously described in Korea.

• Mycobiology
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• v.49 no.5
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• pp.476-490
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• 2021

Global temperatures are steadily increasing, leading to significant changes in microbial diversity and ecology. In the present study, we isolated high-temperature-growing fungi and fungi-like group (Oomycota) strains from freshwater environments of Korea and identified them based on cultural, morphological, and multilocus phylogenetic analyses. As a result, we introduce Saksenaea (Fungi) isolates as a new species, Saksenaea longicolla sp. nov. and record Phytophthora chlamydospora and P. lagoariana (Oomycota) new to Korea. In the growth experiments, they exhibited high-temperature tolerance, which can grow at 35-40 ℃ but become inactive at 4 ℃ and below. This study confirms the presence of high-temperature-tolerant fungi and oomycetes in Korea and suggests that the Korean climate conditions are changing in favor of these species. This indicates that climate warming is altering microbial distributions in freshwater environments.

• Journal of Life Science
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• v.22 no.7
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• pp.970-980
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• 2012

Native halophytes, such as Suaeda maritima, Limonium tetragonum, S. japonica, Zoysia sinica, and Phragmites australis were collected from the Muan salt marsh. Ninety endophytic fungi were isolated from the roots of the collected halophytes. Molecular insights inferred by internal transcribed spacer containing ITS1, 5.8s, and the ITS2 region showed that all the fungal strains belong to ten orders, i.e., Capnodiales (4.44%), Cystofilobasidiales (1.11%), Dothideales (3.33%), Eurotiales (53.33%), Glomerellales (3.33%), Hypocreales (8.89%), Mucorales (1.11%), Pleosporales (15.56%), Sordariales (1.11%), and Trichosphaeriales (1.11%). The rest (6.67%) of all fungal isolates were not identified. Ninety fungal strains were confirmed at the genus level, containing Acremonium, Alternaria, Aspergillus, Aureobasidium, Cephalosporium, Chaetomium, Cladosporium, Colletotrichum, Cryptococcus, Didymella, Dothideomycete, Emericellopsis, Epicoccum, Eupenicillium, Fusarium, Gibberella, Gongronella, Macrophoma, Microsphaeropsis, Nigrospora, Paecilomyces, Paraconiothyrium, Penicillium, Phaeomyces, Phoma, Pleosporales, Purpureocillium, and Talaromyces. Of all the endophytic fungi identified from the various halophytes, Aspergillus and Penicillium of Eurotiales had the highest abundance.

• Mycobiology
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• v.45 no.4
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• pp.344-352
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• 2017

During a survey of fungal diversity of the order Mucorales, three zygomycete isolates, CNUFC-YR113-1, CNUFC-KNU16-7, and CNUFC-BS1-1 were isolated from freshwater and soil samples in Korea. The strains were analyzed both morphologically and phylogenetically based on internal transcribed spacer and 28S rDNA gene sequences. Based on their morphology and phylogeny, the CNUFC-YR113-1 and CNUFC-KNU16-7 isolates were identified as Actinomucor elegans, and CNUFC-BS1-1 was identified as Mucor minutus. To the best of our knowledge, the species A. elegans and M. minutus, belonging to an undiscovered taxon, have not been previously described in Korea.

• Mycobiology
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• v.49 no.2
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• pp.142-150
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• 2021

The species within the family Cunninghamellaceae are widely distributed and produce important metabolites. Morphological studies along with a molecular phylogeny based on the internal transcribed spacer (ITS) and large subunit (LSU) of ribosomal DNA revealed two new species in this family from soils in China, that is, Absidia ovalispora sp. nov. and Cunninghamella globospora sp. nov. The former is phylogenetically closely related to Absidia koreana, but morphologically differs in sporangiospores, sporangia, sporangiophores, columellae, collars, and rhizoids. The latter is phylogenetically closely related to Cunninghamella intermedia, but morphologically differs in sporangiola and colonies. They were described and illustrated.

• Korean Journal of Food Science and Technology
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• v.20 no.5
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• pp.724-731
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• 1988

For a study on the production of ${\gamma}-linolenic$ acid(GLA) by microorganisms, fifteen strains of Mucorales obtained from culture stocks and ten isolate strains were compared in their cell growth, lipid content, fatty acid composition and pellet size formed in shake flask culture. Among the fungi examined, the isolated fungus, designated as FB-354, was found to be the most suitable one for the production of GLA mainly due to its high contents of lipid, 29.9% of dry cell weight and GLA, 16.8% of the total fatty acids. The strain FB-354 was tentatively identified as Mucor sp. on the basis of morphological characteristics. Fungal oil produced by Mucor sp. FB-354 was fractionated into 81.1% of neutral lipid, 7.2% of glycolipid, and 11.8% of phospholipid. Although the GLA content in the phospholipid fraction was as high as 21.4%, most of the GLA was found in the neutral lipid fraction.

• Tuberculosis and Respiratory Diseases
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• v.49 no.1
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• pp.117-121
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• 2000

The mucormycosis is a group of serious opportunistic infections caused by fungi of the class Zygomycetes and order Mucorales. Pulmonary mucormycosis is a relatively rare disease but typically manifested by a rapidly progressive, often fatal pneumonia in patients with diabetes mellitus, hematologic malignant neoplasms, or organ transplants. The radiologic manifestations of pulmonary mucormycosis are nonspecific and include progressive lobar or multilobar consolidations, pulmonary masses and pulmonary nodules. Recently, we experienced a pulmonary mucormycosis in 32-year-old man with uncontrolled diabetes. He complained of cough, left pleuritic chest pain and generalized weakness. Initial chest X-ray finding was the consolidation on the lower lobe of the left lung. On the sixth hospital day, bronchoscopic examination with lung biopsy revealed broad, non-septate hyphae with right-angle branching, diagnostic of mucormycosis, and consequently amphotericin B therapy was started. We performed a lobectomy of the left lower lobe of the lung on 29th hospital day.

• Mycobiology
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• v.40 no.3
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• pp.151-158
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• 2012

Very few studies have addressed the phylogenetic diversity of fungi from Northeast India under the Eastern Himalayan range. In the present study, an attempt has been made to study the phylogenetic diversity of culturable soil fungi along the altitudinal gradients of eastern Himalayas. Soil samples from 24 m above sea level to 2,000 m above sea level altitudes of North-East India were collected to investigate soil micro-fungal community structure and diversity. Molecular characterization of the isolates was done by PCR amplification of 18S rDNA using universal primers. Phylogenetic analysis using BLAST revealed variation in the distribution and richness of different fungal biodiversity over a wide range of altitudes. A total of 107 isolates were characterized belonging to the phyla Ascomycota and Zygomycota, corresponding to seven orders (Eurotiales, Hypocreales, Calosphaeriales, Capnodiales, Pleosporales, Mucorales, and Mortierellales) and Incertae sedis. The characterized isolates were analysed for richness, evenness and diversity indices. Fungal diversity had significant correlation with soil physico-chemical parameters and the altitude. Eurotiales and Hypocreales were most diverse and abundant group of fungi along the entire altitudinal stretch. Species of Penicillium (D=1.44) and Aspergillus (D=1.288) were found to have highest diversity index followed by Talaromyces (D=1.26) and Fusarium (D=1.26). Fungal distribution showed negative correlation with altitude and soil moisture content. Soil temperature, pH, humidity and ambient temperature showed positive correlation with fungal distribution.

• Tuberculosis and Respiratory Diseases
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• v.64 no.6
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• pp.451-455
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• 2008

Pulmonary mucormycosis is an uncommon, serious opportunistic infection caused by fungi belonging to the order Mucorales and it occurs exclusively in debilitated or immuno-compromised hosts. It is known that the fungi can invade the blood vessels and cause serious ischemic necrosis and bleeding5. We experienced a fatal case of pulmonary mucormycosis in a diabetic 75-year-old man who developed a progressive necrotizing lesion despite administering proper and prompt medical and surgical treatment. We report here on this case along with a review of the relevant medical literature.

• Tuberculosis and Respiratory Diseases
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• v.45 no.5
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• pp.1087-1093
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• 1998

Mucormycosis is the common name given to several different diseases caused by fungi of the order Mucorales. The mucoraceae are ubiquitous fungi and are common inhabitants of decaying matter. In contrast to the widespread distribution of these fungi, disease in humans is limited, in most cases, to people with severe immunocompromised, diabetes mellitus, or trauma. 1be fungus gains entry to the body through the respiratory tract. The spores are presumably deposited in the nasal turbinates and may be inhaled into the pulmonary alveoli. The manifestations of mucormycosis are rhinocerebral, pulmonary, cutaneous, gastrointestinal, central nervous system, and miscellaneous. Sporadic reports can be found of mucormycosis involving other areas : heart, bones, kidney, bladder, mediastinum, and trachea. However, isolated tracheal mucormycosis is very rare. Therefore, we report a 57-year old, noninsulin dependent diabetic woman who presented with acute, severe degree of upper airway obstruction due to isolated mucormycosis of the trachea.