• Nuclear Engineering and Technology
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• 제31권3호
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• pp.287-293
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• 1999

To assess the effects of gamma-ray (Co-60) on radiation sensitivity and genetic similarity of the basidiospore and mycelium in oyster mushroom, Pleurotus ostreatus, the D$_{10}$ values and RAPD patterns were analysed. Three strains were isolated from basidiospores (PO-Bl, -B2, and - B3 from 2 kGy irradiation group) and five strains from mycelia (PO-Ml, -M2 from 1 key, PO-M3 from 2 kGy, and PO-M4 and -M5 from 2+1 key irradiation group). The D$_{10}$ values of basidiospore and mycelium of P. Preurotus ostreatus were 1,250 Gy and 500 Gy, respectively. The growth rates of the eight strains on the five media were various and the activities of extracellular chitinases of them were generally higher than those of the control. By the gamma-ray radiation, 22-25% of genetic similarities were changed in the basidiospore strains and 23-36% of them in the mycelium strains. From these results, it seems that the basidiospore could be more radio-resistant than the mycelium of P. ostreatus and that the genetic similarity of the mycelium of P ostrentus could be changed easier than that of the basidiospore by the gamma-ray radiation.ion.

• 한국자원식물학회지
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• 제6권2호
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• pp.165-170
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• 1993

Apexes of basidia in Rhodophyllus muraii var. albus are divided into four sections or depressed in the center. A spore is formed by inflation of the apex of the sterigma. The apex of the sterigma is swollen and changed from a papilla through a peinsform and a club into a globeform. Six spots of globose spore are regularly or irregularly depressed with hilum axes. Finally the spores come cuboid.

• 한국자원식물학회지
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• 제6권1호
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• pp.83-86
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• 1993

Four sterigmata of papillaform E. violaceobrunneum are developed from crator-shaped basidium. The apex of sterigma is swollen to a small globeform. And then it is swollen to a clubform. The clubform is again swollen to a ellipticalform, and then more than six spots of spore surfaces are ramdomly depressed with hilum axes. When the depression of surface of a elliptical spore is over, the spore is a heterodiametrical spore of multi-angular.

• 한국균학회지
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• 제9권3호
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• pp.141-145
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• 1981

앙송이 단일담포자(單一擔胞予)의 발아(發芽)에 가장 알맞은 배지(培地)는 water agar였고 이때 발아율(發芽率)은 26%였다. 단일담포자(單一擔鐵子) 6,372개(個)를 분리(分離)하여 1,622개(個)를 발아(發芽)시켰으며 이들은 균총형태(菌叢形態)에 따라 strandy type과 fluffy type으로 구분(區分) 할 수 있었으며 이중 전자(前者)는 균사생장(菌絲生長) 속도(速度)가 빨랐고 수량(收量)도 높았다. 발아(發芽)된 단일담포자중(單一擔胞子中) 퇴비추출배지상(堆肥抽出培地上)에서 strandy type 778개(個)를 선발(選拔)하여 생산력(生産力)을 검정(檢定)한 결과(結果) 1차(次)에서 공시(供試) 균주(菌株)의 89개(個), 2차(次)에서 19개(個), 3차(次)에서 9개(個) 균주(菌株)를 우수(優秀) 계통(系統)으로 선아(選芽)할 수 있었다. 이들중 No. 645 외(外) 8균주(菌株)는 수량(收量)이 5%이상(以上) 증수(增收)되었으며 그중 No. 1567, 1708 두 균주(菌株)는 수량(收量)이 10% 이상(以上) 증수(增收)되었고 품질(品質)도 양호(良好)하여 우량계통(優良系統)으로 선발(選拔)할 수 있었다. 따라서 단일담포자(單一擔胞子)의 계통분리(純系分離)에 의(依)해 양송이 신계통(新系統) 육성(育成)이 가능(可能)할 것으로 보인다.

• 한국균학회지
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• 제16권4호
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• pp.230-234
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• 1988

Ganoderam lucidum은 비자실체성(非子實體性) 담자포자(擔子胞子)를 형성(形成)하여 다른 담자균류(擔子菌類)에서 볼 수 없는 특이(特異)한 생활환(生活環)을 보였다. G. lucidum은 배지상(培地上)의 기중균사(氣中菌絲)에서 Basidial strom상(狀)의 균사조직(菌絲組織)을 형성(形成)하고 조직표면(組織表面)에 있는 균사(菌絲)의 정단세포(頂端細胞)가 담자기(擔子器)로 분화(分化)되어 그 위에 비자실체성(非子實體性) 담자포자(擔子胞子)를 형성(形成)하였다. 자실체(子實體)없이 Basidial stroma에서 형성(形成)된 비자실체성(非子實體性) 담자포자(擔子胞子)는 정상 담자포자(擔子胞子)와 유사한 형태(形態)를 보이고 있었으나 크기가 약간 작고 포자표면(胞子表面)의 hollow수(數)가 현저히 적었다. 비자실체성(非子實體性) 담자포자(擔子胞子)의 형성(形成)은 균(菌)의 계통(系統)에 따라 뚜렷한 차이(差異)를 보였고 광(光) 및 환기조건하(換氣條件下)에서만 형성(形成) 되었으며 배지(培地)에 따른 차이(差異)는 거의 없었다.

• 한국균학회지
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• 제34권1호
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• pp.34-38
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• 2006

양성자 빔 조사 후 조사선량에 따른 느타리버섯(Pleurotus ostreatus) 담자포자 발아율 및 균사체 생존율이 $10{\sim}100\;Gy$조사선량에서 시그모이드 곡선을 그리며 증가하였으며, 이후 500y 이상 조사시 유의성있게 감소하였다. 50% 치사율($L_{50}$)을 나타내는 조사선량은 담자포자가 500 Gy, 균사체가 400 Gy로 나타났으며, $D_{10}$값($D_{10}\;=\;-l/slope(b)$, y = a + bx) 은 각각 750 Gy와 1,250 Gy로 나타났다. 느타리버섯 돌연변이원으로서 양성자 빔 이용시 적정 조사선량은 담자포자의 경우 $500{\sim}750\;Gy$, 균사체의 경우 $400{\sim}1,000\;Gy$가 바람직하다고 판단되었다.

• 한국자원식물학회지
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• 제6권2호
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• pp.141-145
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• 1993

Apexes of basidia in Rhodophyllus(synonyum of Entoloma) muraii var. albus are divided into four sections or depressed in the center. A spore is formed by inflation of the apex of the sterigma. The apex of the sterigma is swollen and changed from a papilla through a penisform and a club into a globeform. Six spots of globose spore are regularly or irregularly depressed with hilum axes. Finally the spores are cuboid. Basidia of Entoloma squamiferrum are developed from hymenium layer of crator-shaped parabasidium. Apex of basidium is flat or depressed in the center. Although four sterigmata are developed, only two sterigmata are symmetrically swollen to two spores in certain basidia. It means that two sterigmata among four sterigmata are infertile. The apex of the sterigma is swollen into a paillaform, and then turned into a penisform. It is swollen from a clubform into a globeform. Six spots of the surfaces of globose spore are deperssed with hilum axes. Finally the spore is cuboid, and then it is released from hilum. Four sterigmata of papillaform of E. violaceobrunneum are developed from cartor-shaped basidium. The apex of sterigma is swollen to a small globeform. And then it is swollen to a clubform. The clubform is again swollen to a ellipticalform, and then more than six spots of spore surfaces are ramomly depressed with hium axes. When the depression of surface of a elliptical spore is over, it is the multi-angular spore of the heterometrical-form.

• Mycobiology
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• 제37권3호
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• pp.230-237
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• 2009

The oyster mushroom (Pleurotus ostreatus) is one of the most important edible mushrooms worldwide. The mechanism of P. ostreatus fruiting body development has been of interest both for the basic understanding of the phenotypic change of the mycelium-fruiting body and to improve breeding of the mushrooms. Based on our previous publication of P. ostreatus expressed sequence tag database, 1,528 unigene clones were used in macroarray analysis of mycelium, fruiting body and basidiospore developmental stages of P. ostreatus. Gene expression profile databases generated by evaluating expression levels showed that 33, 10, and 94 genes were abundantly expressed in mycelium, fruiting body and basidiospore developmental stages, respectively. Among them, the genes specifically expressed in the fruiting body stage were further analyzed by reverse transcription-polymerase chain reaction and Northern blot to investigate temporal and spatial expression patterns. These results provide useful information for future studies of edible mushroom development.

• Mycobiology
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• 제29권4호
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• pp.190-193
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• 2001

Four strains of Phellinus spp. was identified based on internal transcribed spacer(ITS) region of rDNA sequence analysis and morphological characteristics. Basidiocarps of all strains were effused-reflexed and hymenial surface was poroid. Hyphal system was dimitic and basidiospore was globose to ellipsoid. The amplification of ITS regions produced a DNA fragment of 500 to 780 by in all strains examined. The determined sequences were analyzed for the reconstruction of phylogenetic tree. From these results, Phellinus sp. KM-1, KM-2, and KM-4 was identified as P. hartigii, P. baumii, and P. linteus, respectively.

• 한국균학회지
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• 제50권2호
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• pp.115-123
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• 2022

Two new records of Scleroderma species from South Korea are described here. Comprehensive taxonomic studies of Scleroderma specimens were conducted at the Korea National Arboretum. Based on morphological and molecular data (fungal barcode sequences), two new records (S. laeve and S. nastii) were confirmed. Herein, morphological descriptions, including Scanning Electron Microscope (SEM) images of basidiospore ornamentation, and a taxonomic key of Korean Scleroderma species are provided.