• Mycobiology
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• v.31 no.3
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• pp.145-150
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• 2003

This study investigated the morphological differences of P. ostreatus grown in the artificial environmental conditions such as humidity, temperature, ventilation, and watering. Oyster mushroom, which was cultivated on artificial environmental condition, was shown to have different morphology of fruitbodies. The optimum $CO_2$ concentration for good morphology of P.ostreatus was 0.3%. But most fruitbody showed the morphologically low qualities in more than 0.5% of $CO_2$ concentration. In the humidity in excess of 80% at $13{\sim}16^{\circ}C$, the best morphology of P. ostreatus was investigated. The growth of fruitbodies of P. ostreatus in the ventilation system was good at the wind velocity ranging from $0.2{\sim}0.5$ fpms and expouring type. In other conditions, P. ostreatus generally showed the morphology closing to malformation.

• Mycobiology
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• v.45 no.2
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• pp.57-63
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• 2017

The species of the genus Chlorociboria Seaver are very common on the forest floor, and can be easily distinguished by small and numerous blue-green fruitbody, especially the blue substrate dyed with xylindein produced by this group. This genus has rather high species diversity in the Southern Hemisphere, while a little attention was paid to this group in East Asia area. During a field survey in South Korea, several Chlorociboria specimens were collected. Based on morphological and phylogenetic analyses, three species of Chlorociboria were reported, including one new record in South Korea and one new record in Jeju Island. The key to the species of Chlorociboria from South Korea is provided.

• Korean Journal of Pharmacognosy
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• v.33 no.3 s.130
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• pp.224-229
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• 2002

Sarcodon aspratus (Thelephoraceae), a native mushroom distributed in Korea and Japan has been widely used as a traditional food and folk medicines. Two proteoglycan polysaccharides, named SAP-A and SAP-B were isolated from the fruitbody of S. aspratus. Their molecular weight were determined as 6184.9 D, and 25749.2 D, respectively, by maldi-tof ms. The composition of sugar and amino acid of these compounds was also determined. The SAP-A showed potent antitumor activity. The $ID_{50}$ value of SAP-A was 8.2 mg/kg/day for ICR mice transplanted with solid sarcoma-180, and the elongation of lifespan effect was 167.4% for ICR mice transplanted with ascitic sarcoma-180. Moreover, the elongation life-span effect of SAP-A increased dose-dependently.

• Korean Journal of Pharmacognosy
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• v.40 no.3
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• pp.251-256
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• 2009

Cordyceps bassiana is a parasitic fungus and used as a Chinese traditional medicine. It has been called as DongChungHaCho(summer-plant, winter-worm) in China. Acute oral toxicity was examined in male and female ICR mice. Butanol fraction from Cordyceps bassiana(BuCb) was administered orally at a dose of 2,500 mg/kg, 5,000 mg/kg, 10,000 mg/kg. No death and abnormal clinical signs were observed throughout the administration period. The acute toxicity test on mouse did not show any oversign in net body weight gain, food and water consumptions, organ weights, gross pathological findings by different doses of BuCb. Also, biochemical examination revealed no evidence of specific toxicity. These findings show that BuCb has wide margin of safety on acute toxicity with single exposure.

• Food Science and Biotechnology
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• v.15 no.2
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• pp.308-311
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• 2006

Saesongi (Pleurotus eryngii) was cultivated in both potato dextrose agar (PDA) and sawdust media supplemented with Ca salts. The addition of Ca phosphate and Ca carbonate to sawdust media did not affect the growth, whereas Ca sulfate addition suppressed the mycelial growth appreciably. The efficiencies of Ca accumulation in the fruiting were studied based on mycelial growth experiments on Ca-supplemented sawdust media. Supplementation with 0.1 to 5% Ca phosphate increased the Ca content in the fruiting body by 4.5-6.5 fold, to a level of $314.6{\pm}22.7$ to $449.7{\pm}29.3$.

• Journal of Life Science
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• v.6 no.3
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• pp.193-197
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• 1996

The action spectrum for mycelial growth and fruitbody primordium formation in Pleurotus ostreatus has been studied by irradiation at various wavelengths. Effective wavelengths. Effective wavelengths were distributed from near ultraviolet to blue region of spectrum. The most effect of light was observed in the region between 340 to 500 nanometers. The light intensity required to obtain of the maximum effect at the most effective wavelengths(430-500nm), was over 6.8 mW/Cm$^{2}$. Up to 6.8 mW/Cm$^{2}$, the primordium formed about 25 hr after the start of illumination. The higher the light intensity, the earlier the formation of the primordium formation : Up to about 6.8 mW/Cm$^{2}$.

• The Korean Journal of Mycology
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• v.38 no.2
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• pp.142-145
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• 2010

In this study, we attempted to find substitute materials, swelling rice hull, cocopeat, corncob and coconut sawdust, for sawdust in bottle cultivation of Pleurotus ostreatus. Chemical characters of mixture substrates with four substitute materials for pine sawdust were not different significantly. By comparison in mycelial growth and yield of fruitbody, mixture substrate of cocopeat were showed the same level in P. ostreatus. Therefore, it is suggested that cocopeat was substituted for sawdust for cultivation of P. ostreatus.

• The Korean Journal of Mycology
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• v.38 no.2
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• pp.199-201
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• 2010

Ganoderma neo-japonicum, which is also known as black lingshi mushroom and medicinal mushroom. Present experiments were conducted to determine the possibility of artificial culture with oak sawdust of G. neo-japonicum. The duration of mycelial growth and days of pinhead formation of oak sawdust bag (2.4 kg) were 28~35 days and 25~29 days, respectively. The yield of mushroom fresh fruitbody was 135~157 g.

• Mycobiology
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• v.47 no.3
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• pp.280-291
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• 2019

To explore species diversity of Hypocreaceae, collections from Guangdong, Hubei, and Tibet of China were examined and two new species and a new Chinese record were discovered. Morphological characteristics and DNA sequence analyses of the ITS, LSU, $EF-1{\alpha}$, and RPB2 regions support their placements in Hypocreaceae and the establishments of the new species. Hypomyces hubeiensis sp. nov. is characterized by occurrence on fruitbody of Agaricus sp., concentric rings formed on MEA medium, verticillium-like conidiophores, subulate phialides, rod-shaped to narrowly ellipsoidal conidia, and absence of chlamydospores. Trichoderma subiculoides sp. nov. is distinguished by effuse to confluent rudimentary stromata lacking of a well-developed flank and not changing color in KOH, subcylindrical asci containing eight ascospores that disarticulate into 16 dimorphic part-ascospores, verticillium-like conidiophores, subcylindrical phialides, and subellipsoidal to rod-shaped conidia. Morphological distinctions between the new species and their close relatives are discussed. Hypomyces orthosporus is found for the first time from China.

• Journal of Mushroom
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• v.13 no.3
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• pp.217-222
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• 2015

This study was conducted to obtain a growth correlation of basal information from the development of disease resistant Flammulina velutipes cultivars through back-crossing between the strains of wild-type brown monokaryon 4019-20 and the derivative of commercial quality white monokaryons 3. The two strains were selected to back-cross for further enhancing their latent attributes and growth characteristics. The parents of 4019-$20{\times}M3$ back-crossed to reproduce $F_1$, M3-Sn. Using $F_1$, M3-Sn procured and isolated into 94 monokaryon strains. Further examination of growth characteristics carried out by back-crossing between M3 and $BC_1F_1$ from M3-n dikaryon. Monokaryon exhibited an irregular growth pattern and demonstrated to be sluggish development in the sawdust medium. However $BC_1F_1$(M3-n) dikaryon strains confirmed mostly regular growth pattern and demonstrated ordinary growth in the sawdust medium. The fruitbody of $BC_1F_1$ confirmed as light-brown colour to be the dominant gene. The colour distributions of fruitbody, $BC_1F_1$, resulted as follows; 7% of dark brown, 25% of brown, 27% of light brown, 16% of ivory and 25% of white. The ratio of the other color to white showed 3 to 1 which suggested two major genes were related to fruitbody color.