• 미생물학회지
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• 제10권4호
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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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• 제3권2호
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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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• 제40권3호
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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.

• 미생물과산업
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• 제25권1호
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• pp.10-24
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• 1999

각종 균주중 Aspergillus spp.와 Peninillium spp.로 인공약미를 제조, 균주의 분포에 의한 다음과 같은 결론을 얻었다. 1. Aspergillus spp.와 Peninillium spp.는 모두 외층에서 많은 균주를 발견 할 수 있었다. 2.염색방법으로서는 PAS염색보다는 GRAM염색방법이 균주를 감별하는데 용이하여 PAS염색방법보다 양호하였다. 3.균주를 발견할 수 없는 점등을 생각할 때 충분한 양정은 최소한 균주의 오염만은 피할 수 있을 것으로 사료된다.

• Mycobiology
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• 제30권1호
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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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• 제49권2호
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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.

• 한국동물위생학회지
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• 제46권3호
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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.

• 한국균학회지
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• 제41권3호
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• pp.137-141
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• 2013

오서산의 소나무와 일본잎갈나무 두 수종의 침엽에서 내생균의 다양성을 분석하였다. 총 13개체의 숙수식물에서 채집한 침엽을 표면살균하여 분리한 균주들은 형태적인 특징과 rDNA 유전자(ITS 부위) 분석을 수행하였다. 그 결과 총 37개의 균주가 분리되었으며 이들은 17개의 분류군으로 묶을 수 있었다. 그 중 59%는 Leotiomycetes에 속하였으며, 30%는 Sordariomyetes에, 8%는 Dothideomycetes에 속하였으며, 3%는 Agaricomycetes에 속하는 균으로 판명 되었다. 이러한 결과들은 선행연구의 결과들과 매우 유사하였으며 소나무에서보다 일본잎갈나무에서 내생균의 종 다양성이 높게 나타났다. 특히 Lophodermium 속에 속하는 분류군들이 내생균의 다양성에서 주요한 균류로 확인되었으며, 한국에 분포하는 Lophodermium 속 내 종들에 대한 심도 있는 연구가 요구된다.

• 한국균학회지
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• 제46권3호
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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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• 제24권1호
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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.