• Korean Journal of Microbiology
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• v.10 no.4
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• pp.191-194
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• 1972

There were observed the host-parasite relationship between rice grains and contaminating fungi indicated by the fungal penetration degree in the tested rices. The results were as follows ; 1. The fungal penetration could be observed in the outer layer of the rices but couldn't be seen in the starch portin of the tested rices. 2. The Gram staining method was better than the PAS staining method for the observation of fungi penetration into the rices.

• Journal of Species Research
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• v.3 no.2
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• pp.123-126
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• 2014

We present a list of the beetle species associated with the oyster mushroom, Pleurotus ostreatus Fr. in the birch forest of Onon-Balj National Park in Mongolia. A total of 21 species in seven families were found in this fungus, including fungivorous species: Litargus japonicus Reitter and Mycetophagus antennatus (Reitter) (Mycetophagidae), Pseudamblyopus similis (Lewis) (Erotylidae), and Lordithon sp. (Staphylinidae) etc. Both adult and larval forms are presented in the checklist along with the type of fungal association, of which approximately 52 percent are obligate mycetobionts. The main trends of the ecological and trophic specialization of the mycetophilic beetles are discussed.

• Mycobiology
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• v.40 no.3
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• pp.168-172
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• 2012

In this study, the effect of soil ameliorators on ectomycorrhizal (ECM) fungal communities in coal mine spoils was investigated. Organic fertilizers and slaked lime were applied as soil ameliorators in 3 abandoned coal mine spoils. One year after the initial treatment, roots of Pinus densiflora seedlings were collected and the number of ECM species, colonization rate, and species diversity were assessed. The results showed that the soil ameliorators significantly increased ECM colonization on the roots of P. densiflora. The results suggest that soil ameliorators can have a positive effect on ECM fungi in terms of growth of host plants and show the potential use of soil ameliorator treatment for revegetation with ECM-colonized pine seedlings in the coal mine spoils.

• The Microorganisms and Industry
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• v.25 no.1
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• pp.10-24
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• 1999

There were observed the host-parasite relationship between rice grains and contaminating fungi indicated by the fungal penetration degree in the tested rices. The results were as follows ; 1. The fungal penetration could be observed in the outer layer of the rices but couldn't be seen in the starch portin of the tested rices. 2. The Gram staining method was better than the PAS staining method for the observation of fungi penetration into the rices.

• Mycobiology
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• v.30 no.1
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• pp.18-21
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• 2002

Four arbuscular mycorrhizal fungal(AMF) inocula collected from three arable sites in Korea were used to determine plant growth, mycorrhizal root colonization rate and spore production in three different host plant species; Sorghum bicolor, Allium fistulosum, Tagetes patula. Growth of plant treated with AMF differed from those without AMF. Different AMF inocula showed significantly different root colonization rates and spore production of AMF on the wild plants, A. fistulosum and T. patula, but did not on the cultivated plant, S. bicolor. Results suggested that indigenous mycorrhizal fungal community would be important factors in mycorrhizal symbiosis, and play important roles in the plant succession.

• Mycobiology
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• v.49 no.2
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• pp.95-104
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• 2021

Species of the genus Aspergillus have a variety of effects on humans and have been considered industrial cell factories due to their prominent ability for manufacturing several products such as heterologous proteins, secondary metabolites, and organic acids. Scientists are trying to improve fungal strains and re-design metabolic processes through advanced genetic manipulation techniques and gene delivery systems to enhance their industrial efficiency and utility. In this review, we describe the current status of the genetic manipulation techniques and transformation methods for species of the genus Aspergillus. The host strains, selective markers, and experimental materials required for the genetic manipulation and fungal transformation are described in detail. Furthermore, the advantages and disadvantages of these techniques are described.

• Korean Journal of Veterinary Service
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• v.46 no.3
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• pp.203-210
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• 2023

Breeding ducks are susceptible to fungal infections due to being bred in confined spaces for long periods. The objective of this study was to show the real state of the clinical fungal contamination of 22 duck breeding farms in Chungcheongbuk-do, South Korea. Out of the 430 carcasses obtained from the 22 duck breeding farms, 80 were diagnosed with invasive pulmonary aspergillosis (IPA). Aspergillus spp. were detected as the causative agents, including 26 cases of A. fumigatus, 35 cases of A. flavus, and 19 cases of A. terreus. The clinical lesions in the breeding ducks had circumscribed cream-and-yellow-colored plaques and/or white-to-greenish mycelium. Septate hyphae with parallel walls and dichotomous branching were observed in the histopathological lesions. AGMAg ELISA was performed to determine the overall positive rate of Aspergillus spp. in duck breeding farms. These results showed a positive rate of 58.97% for Aspergillus spp. Additionally, the positive rate increased with the age of the host.

• The Korean Journal of Mycology
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• v.41 no.3
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• pp.137-141
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• 2013

Diversity of endophytic fungi of two species associated with host plants, Pinus densiflora and Larix kaempferi in Mt. Oser were investigated. Endophytic fungi were isolated from surface sterilized leaves of the 13 host plants and identified by morphological traits and rDNA ITS sequences analysis. Totally 37 isolates were discovered and identified into 17 taxa. Of them, 59% isolates belonged to Leotiomycetes, 30% isolates Sordariomyetes, 8% isolates Dothideomycetes and 3% isolates Agaricomycetes. Results showed a similar diversity pattern with previous studies. Also, species diversity (H') of endophytic fungi isolated from L. kaempferi was higher than that from P. densiflora. The endophytic species composition showed significant differences between host plants. Particularly, taxon of Lophodermium is a major genus in the host plants. However, critical research of the endophytic species diversities within the genus in Korea is required. The communities of endophytic fungi isolated in this study showed differences in diversities and species composition between host plants.

• The Korean Journal of Mycology
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• v.46 no.3
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• pp.205-211
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• 2018

Fungal endophytes are defined as fungi inhabiting plant tissues, causing no apparent disease. As the agricultural and ecological importance of endophytes has increased, many studies have been performed on various aspects, ranging from basic identification, taxonomy, and evolution to secondary metabolites with potential for human use. In the Korean Peninsula, conifers are the most commonly found evergreen trees, with approximately 30 to 60 reported taxa. Studies on the effect of conifer-associated endophytes on the host plants are required for the preservation and conservation of coniferous forests which decline by climate change and deforestation. This review summarizes the diversity of endophytic fungi in coniferous trees of Korea and their relationship with host plants.

• The Plant Pathology Journal
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• v.24 no.1
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• pp.84-86
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• 2008

Field surveys and specimen collections of the rust fungal pathogen Gymnosporangium were carried out for 15 years from 1985 through 1999 in various locations of Korea. Macroscopic and microscopic examinations of morphological characteristics of aecia from the collected specimens revealed that Gymnosporangium globosum is the causal agent of American hawthorn rust disease on Crataegus pinnatifida and C. pinnatifida varmajor. The host plants are new for this rust fungus. G. globosum was found only in Gyeonggi and Chungbuk provinces, indicating that its distribution in Korea is limited. This is a first full description on morphological characters of aecia of G. globosum in Korea.