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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Mycology
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Journal DOI :
The Korean Society of Mycology
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Volume & Issues
Volume 35, Issue 2 - Dec 2007
Volume 35, Issue 1 - Jun 2007
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Effect of Mutation in α-COP, A Subunit of the COPI Vesicle, on Cell Wall Biogenesis in Fungi
Lee, Hwan-Hee ; Park, Hee-Moon ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 1~10
DOI : 10.4489/KJM.2007.35.1.001
The cell wall is essential for the survival and osmotic integrity of fungal cells. It is the framework to which biologically active proteins such as cell adhesion molecules and hydrolytic enzymes are attached or within which they act. Recently it was shown that mutations in
, a subunit of COPI vesicle, is responsible for the thermo-sensitive osmo-fragile phenotype of fungi, such as Saccharomyces cerevisiae and Aspergillus nidulans, and suggested that
may play a crucial role in translocation of protein(s) of the
synthase complex and cell wall proteins, thus may contribute to the maintenance of cell wall integrity. In this review, we summarized the relationship between the intra-cellular protein translocation machinery, especially the
of COPI vesicle, and cell wall biogenesis in fungi. We also discussed potential use of secretory mutants in basic and applied research of the fungal cell walls.
Distribution of Higher Fungi in NaeJangSan National Park
Jang, Seog-Ki ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 11~27
DOI : 10.4489/KJM.2007.35.1.011
This study was conducted to investigate the diversity of higher fungi in NaeJangSan National Park from April 2004 to November 2006. The obtained results from investigation were as follows. The total of 5 classes, 19 orders, 60 families, 168 genera and 418 species (including 10 families, 13 genera and 15 species unrecorded) including saprophytic and ectomycorrhizal fungi was investigated. The higher fungi were classified into 47 families, 143 genera and 384 species in Basidiomycotina, 9 families, 19 genera and 28 species in Ascomycotina and 4 families, 6 genera and 6 species in Myxomycota. It was turned out that most of the higher fungi belong to Hymenomycetidae in Basidiomycotina, for which 34 families 122 genera, and 353 species were observed. Dorminant species belonged to Tricholomataceae(64 species) Russulaceae(39 species), Polyporaceae(36 species) and Boletaceae(36 species). The mushroom occurrence of higher fungi was closely related to climatic conditions such as high air temperature and lots of rainfall from July to September. The environment which has a favorable influence of mushroom occurrence was air temperature, relative humidity and rainfall of climatic environment.
Phylogenetic Relationships and Cultural Characteristics among Inonotus obliquus Strains Collected in Korea
Park, Hyun ; Park, Won-Chull ; Yoon, Kab-Hee ; Chang, Ji-Youn ; Ryu, Sung-Ryul ; Ka, Kang-Hyeon ; Lee, Bong-Hun ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 28~32
DOI : 10.4489/KJM.2007.35.1.028
Fruiting bodies of Inonotus obliquus were collected from the trunk of Betula ermani at 1,100 m of Mt. Odae. Diameter range of the trees at breast height (DBH) was
cm and size range of the sclerotia was
. Relationships between the examined strains and Inonotus obliquus strain registered in National Center for Biotechnology Information (NCBI) were very near. And all of 10 strains except strains registered in NCBI showed high homologous characteristics by neighbour joining analysis of ITS sequence. Mycelial growth showed a big difference among strains. Mycelial growth of KFRI 744 was fastest and KFRI 739 was slowest. Difference of mycelial growth between KFRI 735 and 738 was slight, but the difference of mycelial growth between KFRI 744 and 739 was almost twice. Also weight reduction rate among strains showed some difference. KFRI 744 was highest and KFRI 741 was lowest. Vegetative incompatibilities were observed in all mycelial pairings except for KFRI 740-741 and KFRI 742-743 combinations.
Harmful Microorganisms Occurred on the Bed-logs of Several Quercus spp. for Shiitake Cultivation
Park, Won-Chull ; Ka, Kang-Hyeon ; Yoon, Kab-Hee ; Ryu, Sung-Ryul ; Lee, Bong-Hun ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 33~36
DOI : 10.4489/KJM.2007.35.1.033
An attempt was made to investigate the status of harmful microorganisms occurring on different kinds of oak bed-logs during shiitake cultivation. As a result, totally 14 species of harmful microorganisms, including Trametes versicolor, were confirmed. Twelve kinds of harmful microorganisms were observed on Quercus acutissima, 9 kinds on Q. mongolica and 10 kinds on Q. aliena. Diatrype stigma, Hypoxylon truncatum, Hypoxylon sp. and Trichoderma sp. occupied 75.1% of the total harmful fungi occurred on Q. acutissima. H. truncatum and Trichoderma sp. occupied 71.2% of the total harmful fungi occurred on Q. mongolica. On Q. aliena, the occurrence of H. truncatum, Trichoderma sp. and Hypoxylon howeianum was 80.3%. D. stigma and Hypoxylon sp. were observed exclusively on Q. acutissima bed-logs, and the outbreak ratios were 51.6% and 13.1%, respectively. H. truncatum was observed on 46.6% of Q. aliena bed-logs and Trichoderma sp. was observed on 30.3% of Q. mongolica bed-logs.
Production of Mycelia and Water Soluble Polysaccharides from Submerged Culture of Lentinus lepideus in Bioreactor
Ahn, Jin-Kwon ; Ka, Kang-Hyeon ; Lee, Wi-Young ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 37~42
DOI : 10.4489/KJM.2007.35.1.037
The mushroom Lentinus lepideus was used to produce mycelial as well as soluble polysaccharides in bioreactor cultures. To determine optimal submerged culture conditions, both growth characteristics and water soluble polysaccharides production were compared among four different types of bioreactor and culture conditions. For the production of mycelial biomass, the following bioreactors were proven to be effective in decreasing order: an external-loop type air-lift bioreactor (ETAB; 7g/l), a balloon type air bubble bioreactor (BTBB; 6.2g/l), a stirrer type bioreactor (STB; 6g/l), and a column type air bubble bioreactor (CTBB; 5g/l). Maxiaml production of water soluble exopolysaccharides (EPS; 0.62g/l) and endopolysaccharides (PPS; 7.7%) could also be obtained from BTBB. The mycelial biomass increased with increase in glucose concentration from 15g/l to 75g/l in the media. In contrast, PPS contents in the cells decreased with increase in glucose concentration in the media, showing the highest PPS content (7%) at 15g/l. Among different medium feeding types, fed-batch culture based on concentration control in media (10g/l) produced higher mycelia than fed-batch culture based on volume control of media (5.8g/l) or batch culture (3.4g/l). EPS production was also higher in fed-batch culture based on medium concentration control than that in other feeding types.
A Natural Fungus-derived Elicitor for Induction of Systemic Acquired Resistance (SAR) in Potato
Park, Hae-Jun ; Kim, Hong-Gi ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 43~46
DOI : 10.4489/KJM.2007.35.1.043
It was investigated that systemic acquired resistance (SAR) was induced in plant treated with a elicitor, which was derived from a non-virulent fungus. The elicitor, a hyphal cell wall component derived from fungus, induced a production of phytoalexin and a generation of reactive oxygen species (ROS) in potato treated with its low level concentrations. The effect of the fungus-derived elicitor was better than that of virulent pathogen-derived elicitor, which was well known in potato. These results, therefore, suggested potentcial use of fungus-derived elicitor as a new plant protector for commercial development.
The Growth Characteristics of Pleurotus eryngii
Ryu, Jae-San ; Kim, Min-Keun ; Kwon, Jin-Hyeuk ; Cho, Sook-Hyun ; Kim, Nak-Ku ; Rho, Chi-Wong ; Lee, Chun-Hee ; Ro, Hyeon-Su ; Lee, Hyun-Sook ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 47~53
DOI : 10.4489/KJM.2007.35.1.047
In this study, we investigated the properties of incubation and growing of Pleurotus eryngii in addition to the mycological properties to use them as basic data for breeding. The speed of mycelial growth on the MCM was faster than on the PDA. The biomass in the PDB broth culture was higher than in the MCM and YMG broth culture. KNR2515 and KNR2516 required 19 days for growth of mycelia on commercial sawdust media. KNR2503 required 6.5 days and 15.3 days for pin-heading and harvesting, respectively. In morphological properties by the mushroom, the heights of KNR2312 and KNR2322 were 122.7 and 121.0 mm, respectively. The thickness of KNR2322 and KNR2513 were 39.8 mm and 31.3 mm, respectively. The weight of KNR2524`s fruiting body was 36.3 g, which is good as wild strain. The quality of fruiting body of KNR2503 was 4.0 in comparison to the score 7 of commercially cultivated strains. KNR2512 had the darkest color of pileus with L value 43.6. The slow growing strains, KNR2511, KNR2513, and KNR2512 had the bright pileus with L value 80. In morphological characteristics, KNR2511, KNR2513, and KNR2515 had white lamellar and plane pileus. The three strains are supposed to be the same group and KNR2516 and KNR2518 appeared to be related to the group. The commercially cultivated strains had convex pileus, KNR2502, KNR2503, KNR2504, KNR2521, and KNR2525 had infundibuliform, and the other strains had plane pileus. Several strains were valuable for breeding, JNR2503 for growth rate, KNR2512 for pileus color, and KNR2312, KNR2322, KNR2503, and KNR2513 for the quality.
Occurrence of Rhizopus Soft Rot on Musa sapientum Caused by Rhizopus stolonifer in Korea
Kwon, Jin-Hyeuk ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 54~57
DOI : 10.4489/KJM.2007.35.1.054
Rhizopus soft rot caused by Rhizopus stolonifer occurred on banana (Musa sapientum) in the box at Jinju City Wholesale Market of Agricultural Products at Gyeongnam province in Korea. The infected fruits were rapidly water-soaked, softened, blackened and eventually rotted. They were infected from wounds at harvest time. The colony of the isolate from the infected fruit was white to light brown and formed many sporangiospores. The optimum growth temperature of the fungus on potato dextrose agar was
. Sporangiophores were
in width. Sporangia were globose or hemispheric, white at first and changed gradually to black, and
in size. Columella were hemispheric, and
in size. Sporangiospores were irregular round or oval, brownish-black and
in size. On the basis of symptom, mycological characteristics and pathogenicity to banana, the causal fungus was identified as Rhizopus stolonifer. This is the first report of Rhizopus soft rot by R. stolonifer on banana in Korea.
Antifungal Activity of Essential Oil from Asarum sieboldii against Epidermal and Opportunistic Pathogenic Fungi
Han, Kap-Hoon ;
The Korean Journal of Mycology, volume 35, issue 1, 2007, Pages 58~60
DOI : 10.4489/KJM.2007.35.1.058
Root of Asarum sieboldii has been used in chinese medicine. It was been known that the extract of A. sieboldii has medicinal effect such as antifebrile, anodyne, and anti-inflammatory. Antifungal activity of the essential oil extracted from A. sieboldii against various epiderman and opportunistic human pathogenic fungi was investigated. Steam-distillated essential oil demonstrated very high antifungal activity against Aspergillus fumigatus, Aspergillus niger, Cryptococcus neoformans, and Candida albicans. MIC (minimum inhibitory concentration) of the essential oil against C. albicans was 5 ul/ml, indicating that the essential oil may be used as natural preserves for cosmetic and nutritional products.