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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Mycology
Journal Basic Information
Journal DOI :
The Korean Society of Mycology
Editor in Chief :
Volume & Issues
Volume 2, Issue 1 - Dec 1974
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Some Factors Affecting Growth of Mycogone perniciosa Magn. Causing Wet Bubble in Cultivated Mushroom, Agaricus bisporus (Lange) Sing
Han, Young-Sik ; Kim, Dong-Soo ; Jun, Byung-Sung ; Shin, Kwan-Chul ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 1~6
1. The mycelial growth and sporulation of Mycogone perniciosa was compared on modified Czapek's media deficient in carbon source, nitrogen source, K,Mg, P or the heavy metal elements. The mycelial growth was significantly reduced in solution cultures lacking Mg, K or P and only a trace of growth occurred in solutions lacking carbon source or nitrogen source. Most sparse sporulation and smaller chlamydospores than on any of deficient agar media occurred on agar media dificient in carbon source or nitrogen source. 2. In both potato dextrose agar and malt extract solution, growth of the fungus was optimum at
, and undetectable at
. 3. Optimum pH for growth of this fungus was 7.0. 4. This fungus was killed in soil when exposed to
or higher for 20 minutes or more.
Some Biological Studies on Mycogone perniciosa Magn. Causing Wet Bubble in ultivated Mushroom, Agaricus bisporus (Lange) Sing (I) Antagonistic Relationships between M. perniciosa and Microfloral Organisms in the Casing Soil (II) lnteractions between M. perniciosa and A. bisporus
Han, Young-Sik ; Shin, Kwan-Chul ; Kim, Dong-Soo ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 7~14
These experiments were conducted to learn the antibiosis of microfloral organisms in the casing soil to Mycogone perniciosa, and interactions between M. perniciosa and Agaricus bisporus. The results obtained were as follows: 1. In vitro tests, the development of M. perniciosa was suppressed from the unidentified microfloral organisms in the casing soil. All the infected sporophores of A. bisporus occurred within an area applied with spore suspension of M. perniciosa as spot treatment and no infected ones in the area around the spot treated under cropping conditions. 2. In vitro tests, although the antagonistic relationship between M. perniciosa and A. bisporus was somewhat different in varying the kind of media, A. bisporus ultimately overgrew the colony of M. perniciosa. When spore inoculation of M. perniciosa was applied on the surface of grain spawn of A. bisporus and the mid layer of casing soil under cropping conditions, no infected sporophores were produced, whereas the infected sporophores were only produced on casing soil inoculated on the surface of casing soil with spore suspension.
Studies on the Root Rot of Ginseng - (IV) Distribution of Fungi and Fusarium sp. Population in Ginseng Cultivation Soil -
Kim, Jong-Hee ; Lee, Min-Woong ; Kim, Gwang-Po ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 15~19
A severe ginseng root rot disease was occurred and became widespraed in 1973 affecting the ginseng cultivating plot around Kangwha and Gimpo-Gun of Kyunggi province. Soil samples were collected from the area of Wolgot-Myun, Gimpo-Gun, Kuunggi-Do, 1974. We examined general fungi and Fusarium sp. in soil layers and also in different kinds of soil of respective diseased, uncultivated and healthy areas, and found the following results. 1. In the diseased and uncultivated area, the content of moisture, organic matter and silt was greater than in the healthy area. 2. Contray to the above, the healthy area contained a greater amount of inorganic elements such as
, K,Ca and of soil particle such as Cs and Fs. The degree of pH and content of Mg were even in the three types of soils. 3. General fungi were found in abundance in the diseased and uncultivated soils. It was observed that in all types of areas, general fungi reside in abundance in the rhizosphere, i.e., 10-15cm layers and that the closer the surface, the greater the numbers of fungi. 4. A great number of Fusarium sp. was found in the uncultivated area, and followed diseased and healthy areas. It was observed that in all types of areas, Fusarium sp. distributed in abundance in rhizosphere and that the closer the surface, the greater the numbers of Fusarium sp., with the numbers decreasing as the soil layers increase.
Some Experiments on the Cultivation of Straw Mushroom, Volvariella volvacea (Bull. ex Fr.) Sing. in Korea
Park, Young-Hwan ; Chang, Hak-Gil ; Jung, Chung-Sam ; Kim, Dong-Soo ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 21~24
Present experiments were conducted to determine the possibility of cultivation of tropical and subtropical saprophytic fungus, Volvariella volvacea (Bull. ex Fr.) Sing. under Korean climatic conditions and the-possibility of applying the method of indoor cultivation which was modified from the cultivation method of the common mushroom, Agaricus bisporus (Lange) Sing.. The results obtained were as follows: 1. In conventional outdoor cultivation, the adequate cultivation period of this fungus was from around the end of June to the end of August. 2. When rice straws submerged in water for 5 days were peak-heated for 6 days in a mush room house, the yield of the fungus was higher than that obtained from the rice straws peak-heated immediately after outdoor composting. 3. The highest yield, 20.49kg per 100kg rice straws, was obtained from the water-soaked and peak-heated rice straws which were cased with a 2 cm layer of loam at 7 days after spawning.
Studies on the Cellulase of Penicillium sp. Isolated from Soils - (II) Culture Conditions of Penicillium sp. C13-13 Strain -
Kim, Yong-Bae ; Yi, Pyung-Kuk ; Choi, Seung-Ho ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 25~29
1. Penicillium sp. C 13-13 strain was obtained with the treatment of mutagenic agents(N.T.G.) and by single spore isolation method from the Penicillium sp. C8-14 strain, which was reported in the previous paper. 2. The above strain had a few spores and to obtain seed culture, it was cultured at
and initial pH
, with air rate 6l/min., and agitation 600 rpm for 48 hours in 10% wheat bran medium in 20l- Jar fermenter. When the broth that had above 70ml of mycelium was inoculated into wheat bran medium and incubated at
for 72 hrs, the cellulase activity of the koji was higher. 3. Adding calcium chloride and magnecium sulfate to the wheat bran medium to 1.5% and 0.015% respectively, the cellulase activity of the koji was higher than that of the control.
Studies on the Mating System in Shiitake, Lentinus edodes (Berk.) Sing
Park, Yong-Hwan ;
The Korean Journal of Mycology, volume 2, issue 1, 1974, Pages 31~33
The four stocks of Lentinus edodes (Berk.) SING.-1-3, 16-3, 5NG2, 5NG3 were used as mating materials. As a result of full stock mating pattern for four stocks, all of mating types formed clamp connection but degrees of formation of clamp connection and period required for the formation were somewhat different among all of the mating types. In the mating of two New Guinean stocks-5NG2, 5NG3-, the mycelial growth and the formation of clamp connection was comparatively reduced.