• Journal of Ginseng Research
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• 제5권2호
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• pp.163-169
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• 1981

In order to clarify the biological effects of chemical mutagen, ethyl methane sulphonate (EMS), in M, seedling(Ponax ginseng C. A. Meyer) . the dehiscent seeds of ginseng were treated with EMS for 12 hours at 20t and Post-washed for 24 to 72 hours. The differences of biological injuries in M, generation due to the concentration of EMS were quite obvious in rate and date of germination, stem length, stem diameter, leaf length, leaf width, root length, root diameter, and root weight . Especially, the seeds treated with the high concentration of EMS , above 0.8%, were not germinated The growth injury was directly proportional to the concentration of EMS but not relative to the post-washing time of afire 25 hours. The useful range of EMS concentration and post-washing time in ginseng seeds were 0.4 % - 0.6% and above 24 hours, respectively.

• 공업화학
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• 제26권3호
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• pp.265-269
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• 2015

Chlorella vulgaris는 녹조류로 직경 $2{\sim}10{\mu}m$의 구형 단세포식물로 단백질, 클로로필, 카로티노이드, 클로렐라 성장촉진인자(CGF)와 같은 기능성물질을 함유하고 있는 것으로 밝혀짐에 따라 영양학적 우수성이 확인되었으며, 간 기능 개선 및 면역 기능강화와 같은 기능성이 보고되고 있다. 본 연구에서, C. vulgaris에 화학적 돌연변이원인 EMS (ethyl methane sulphonate) 처리에 따른 세포 성장, 색소 및 지질 함량에 미치는 영향을 살펴보았고, 그에 따른 변이주를 확보하였다. C. vulgaris에 EMS를 처리하여 얻어진 변이주를 E14, E24로 명명하였다. 세포 성장의 경우 mutant의 성장 패턴이 Wild Type (WT) 균주의 성장 패턴과 비슷하였다. E14, E24의 클로로필 함량은 각각 99, 52% 증가하였고, 카로티노이드 함량은 E14는 7% 증가, E24의 경우 5% 감소하였다. 지질 함량의 경우 WT에 비해 E24의 경우 23% 증가하였고, E14는 12% 감소하였다. 이 결과, EMS에 의해 유도된 C. vulgaris 돌연변이주는 세포 성장은 차이를 보이지 않지만 클로로필과 카로티노이드, 지질 함량을 많이 축적하여 고부가가치 소재로 이용될 것으로 기대된다.

• Journal of Plant Biotechnology
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• 제45권1호
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• pp.55-62
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• 2018

In the present study in vitro mutagenesis was used to study the effect of gamma irradiation and EMS on callus induction, morphogenesis and production of multiple shoots from different explants of Citrullus colocynthis (L.) Schrad. Gamma radiations (5 kR to 20 kR) and certain chemicals have been effected on plant growth developments and changes of biochemical metabolisms in plants. Murashige and Skoog (MS) medium containing with auxins such as NAA, IAA, 2,4-D (0.5 ~ 2.0 mg/l), cytokinines BAP, kn TDZ, (0.5 ~ 2.5 mg/l), L-Glutamic acid (1 ~ 2 mg/l) and Coconut milk (10 ~ 20%). After 5 weeks on induction media, explants and callus (EC) were exposed to 5 kR, 10 kR, 15 kR and 20kR, of gamma radiation and treated with 1, 2, 3, 4 and 5 mM ethyl methane sulphonate (EMS) for 30 min. The highest percentage of callusing was observed (70%) stem irradiated with 5 kR and significantly decrease in fresh and dry weight of callus in the below 4 kR doses and above 20 kR doses, there was a progressive decrease in the fresh weight and dry weights when compared to control callus. Maximum percentage of plantlet regeneration (59%) was induced from callus exposed to 15 kR gamma irradiation on MS media fortified with 2.0 mg/l 2,4-D + 2.0 mg/l BAP + 2.0 mg/l L-glutamic acid. Increase in gamma irradiation dose above 15 kR and 5 mM EMS reduced regeneration capacity of callus. Doses higher than 20 kR and 7 mM EMS was lethal to micropropagated plants of Citurullus colocynthis.

• 한국균학회지
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• 제21권3호
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• pp.230-234
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• 1993

R. nigricans Ehrenberg의 돌연변이주를 분리하기 위하여 화학적인 돌연변이원인 N-Methyl-N'-Nitro-N-Nitrosoguanidine(MNNG)과 Ethyl Methane Sulphonate(EMS)의 최적 처리 조건을 조사하였을 때, MNNG농도는 $125{\mu}g/ml$, 처리시간이 60분일 때 돌연변이율이 가장 높은 생존율 0.1-1.0%를 나타내었다. MNNG를 이용하여 영양요구성 돌연변이주 Leucine auxotroph를 분리하였으며, 포자낭병의 길이가 축소된 것, 포자낭병의 모양이 나선형으로 변한 것, 그리고 포자낭과 포자낭포자의 크기가 감소된 것 등 세 가지 형태적 변이주를 분리하였다.

• 한국미생물·생명공학회지
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• 제31권4호
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• pp.435-438
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• 2003

Iron required by all organisms is related with diverse biological processes. Most eukaryotes need extra iron to maintain their nutrition balance. However, extra iron supplement gives many problem to solubility in the cells. To increase the bio-availability of iron in cells, yeast was applied to carry the iron with solubility. Selection of yeast mutants with enhanced iron uptake were performed by mutagenesis using the alkylation agent EMS. Eleven mutant strains with enhanced iron uptake were selected by the measurement of iron content with atomic absorption spectrometer. The iron content in mutants was 1.5- to 2.5-fold more than that in wild-type. These mutants could be served as iron-fortified nutrients for food and feed.