야생참깨에서 agrobacterium rhizogenes 유도 모상근의 배양조건

Byung Ohg Ahn(安炳玉),Tetsuya Asamizu(淺水哲也),Kyo ji Yamada(山田恭司) 한국육종학회 1997 한국육종학회지 Vol.29 No.2

In order to investigate optimized culture conditions of hairy roots of Sesamum schinzianum (wild sesame) induced by infection of Agrobacterium rhizogenes, ATCC 15834 and MAFF03-01724 were cultured in various media, sucrose concentrations and pH levels. As the results, best growth condition of hairy roots induced by Agrobacterium rhizogenes strains was obtained in 1/2 MS medium free of hormone, 3% sucrose and pH 8.0. Hairy roots induced by Agrobacterium rhizogenes MAFF03-01724 showed better growth of extensive lateral root branches than that of ATCC 15834. In opine analysis, hairy roots induced by Agrobacterium rhizogenes ATCC 15834 was detected as agropine type while mikimopine in that of MAFF03-01724.

Bt 벼의 토양미생물상 영향 비교평가

손수인(Soo-In Sohn),안병옥(Byung-Ohg Ahn),지희연(Hee-Youn Chi),조병관(Hee-Youn Chi),조민석(Min-Seok Cho),신공식(Kong Sik Shin) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.5

경제적 및 농업적 장점은 유전자 변형 작물 재배면적의 증가를 가져왔다. 그러나 유전자 변형 작물의 상업적 재배전에 유전자 변형 작물의 인간건강 및 환경에 미칠 잠재적 위해성에 대한 면밀한 검토가 필수적이다. 본 연구에서는 Bt벼의 토양미생물 군집에 미치는 영향을 조사하였다. 토양화학성분을 분석한 결과, Bt벼와 낙동벼 근권토양 간 화학 성분의 유의성 있는 차이는 없는 것으로 조사되었다. 재배전, 재배초기, 최고 분얼기의 토양미생물 군집밀도를 조사했을 때 Bt벼 근권토양의 세균, 방선균, 진균 군집밀도는 낙동 벼와 유사한 수준으로 나타났다. 시기별 DGGE 분석결과 Bt 벼 근권토양 전체미생물상은 낙동벼와 차이가 없는 것으로 조사되었다. Pyrosequencing을 통한 Bt벼와 낙동벼의 미생 물 군집조성을 조사한 결과 주요 미생물상 분포에 있어서도 매우 유사한 양상을 나타내었다. 위의 결과들을 종합해볼 때 Bt 재배에 따른 토양미생물상에 미치는 영향은 미미한 것으로 사료된다. 수확 후 벼 잔존물이 토양환경에 미치는 영향에 대해서는 좀 더 연구가 진행되어야 할 것이다. The cultivation of genetically modified (GM) crops has increased due to their economic and agronomic advantages. Before commercialization of GM crops, however, we must assess the potential risks of GM crops on human health and environment. The aim of this study was to investigate the possible impact of Bt rice on the soil microbial community. Microbial communities were isolated from the rhizosphere soil cultivated with Bt rice and Nakdong, parental cultivar and were subjected to be analyzed using both culture-dependent and molecular methods. The total counts of bacteria, fungi, and actinomycetes in the rhizosphere of transgenic and conventional rice were not significantly different. Denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified 16S rRNA genes revealed that the bacterial community structures during cultural periods were very similar each other. Analysis of dominant isolates in the rhizosphere cultivated with Bt and Nakdong rice showed that the dominant isolates from the soil of Bt rice and Nakdong belonged to the Proteobacteria, Cloroflexi, Actinobacteria, Firmicutes, and Acidobacteria. These results indicate that the Bt rice has no significant impact on the soil microbial communities during cultivation period. Further study remains to be investigated whether the residue of Bt rice effect on the soil environment.

Protox 제초제저항성 벼 재배가 토양미생물 군집에 미치는 영향

오성덕 ( Sung Dug Oh ),안병옥 ( Byung Ohg Ahn ),김민경 ( Min Kyeong Kim ),손수인 ( Soo In Sohn ),류태훈 ( Tae Hun Ryu ),조현석 ( Hyun Suk Cho ),김창기 ( Chang Gi Kim ),백경환 ( Kyoung Whan Back ),이기종 ( Ki Jong Lee ) 한국환경농학회 2013 한국환경농학회지 Vol.32 No.2

BACKGROUND: Rice (Oryza sativa) is the most important staple food of over half the world`s population. This study was conducted to evaluate the possible impact of transgenic rice cultivation on the soil microbial community. METHODS AND RESULTS: Microorganisms were isolated from the rhizosphere of GM and non-GM rice cultivation soils. Microbial community was identified based on the culture-dependent and molecular biology methods. The total numbers of bacteria, fungi, and actinomycete in the rhizosphere soils cultivated with GM and non-GM rice were similar to each other, and there was no significant difference between GM and non-GM rice. Dominant bacterial phyla in the rhizosphere soils cultivated with GM and non-GM rice were Actinobacteria, Firmicutes, and Proteobacteria. The microbial communities in GM and non-GM rice cultivated soils were characterized using the denaturing gradient gel electrophoresis (DGGE). The DGGE profiles showed similar patterns, but didn`t show significant difference to each other. DNAs were isolated from soils cultivating GM and non-GM rice and analyzed for persistence of inserted gene in the soil by using PCR. The PCR analysis revealed that there were no amplified protoxgene in soil DNA. CONCLUSION(S): These data suggest that transgenic rice does not have a significant impact on soil microbial communities, although continued research may be necessary.

형질전환 가뭄저항성 벼 현미의 주요 영양성분 분석

이영택(Young-Tack Lee),이향미(Hyang-Mi Lee),안병옥(Byung-Ohg Ahn),조현석(Hyun-Suk Cho),서석철(Seok-Chul Suh) 한국식품영양과학회 2013 한국식품영양과학회지 Vol.42 No.5

본 연구는 국내에서 개발되어 내건성을 갖도록 형질전환된 가뭄저항성 벼(GM 벼)와 그 모종 벼인 일미벼(non-GM 벼)로부터 쌀(현미)의 일반성분, 지방산, 아미노산, 무기질, 비타민 함량을 분석하여 가뭄저항성 벼에서 주요 영양성분의 조성에 차이가 있는지를 비교, 조사하였다. 본 실험에 사용한 벼는 군위와 수원 두 지역에서 재배되었다. 가뭄저항성 쌀은 모종 쌀과 일반성분 함량이 유사하였으며 두 재배지역간 성분 차이가 없는 것으로 나타났다. GM 쌀의 지방산 조성은 non-GM 쌀과 전체적인 지방산 조성과 유사한 것으로 나타났다. GM 쌀의 아미노산 함량은 non-GM 쌀과 차이가 없었으나 non-GM 쌀 모종의 경우 두 재배지역간에 아미노산 함량에 다소간의 차이가 있어 같은 품종이라도 재배지역에 따라 차이를 줄 수 있는 것으로 나타났다. 가뭄저항성 쌀이 non-GM 쌀에 비해 무기질 함량이 약간 높은 수치로 측정되었지만 유의적인 차이는 없는 것으로 평가되었으며, 비타민 B1과 비타민 E 함량에도 별 차이가 없는 것으로 나타났다. This study compared the nutritional components (proximate components, fatty acids, amino acids, minerals and vitamins) between genetically modified (GM) drought-tolerant rice and a parental rice cultivar (Ilmibyeo) as a non-GM control. Both GM and non-GM rices were grown and harvested in two different locations, Gunwi and Suweon in Korea. Proximate components (moisture, starch, protein, lipid, and ash contents) were similar between the drought-tolerant GM rice and the conventional non-GM rice. There were no significant differences between the GM and non-GM rice in most of their nutrient compositions, despite minor locational differences of some amino acids and minerals. These results indicate that transgenic rice with a genetically improved resistance to drought is equivalent to the parental rice cultivar without major changes in its chemical contents.

바이러스저항성 삼각주 재배가 토양 미생물상에 미치는 영향

오성덕 ( Sung Dug Oh ),김종범 ( Jong Bum Kim ),이정진 ( Jung Jin Lee ),김민경 ( Min Kyeong Kim ),안병옥 ( Byung Ohg Ahn ),손수인 ( Soo In Sohn ),박종석 ( Jong Sug Park ),류태훈 ( Tae Hun Ryu ),조현석 ( Hyun Suk Cho ),이기종 ( Ki J 한국환경농학회 2013 한국환경농학회지 Vol.32 No.2

BACKGROUND: Genetically modified(GM) trigonal cactus(Hylocereus trigonus Saff.) contained a coat protein gene of cactus virus X (CVX), which conferred resistance to the virus, phosphinothricin acetyltransferase (bar) gene, which conferred herbicide resistance, and a cauliflower mosaic virus 35S promoter (CaMV 35S). This study was conducted to evaluate the possible impact of GM trigonal cactus cultivation on the soil microbial community. METHODS AND RESULTS: Microorganisms were isolated from the rhizosphere of GM and non-GM trigonal cactus cultivation soils. The total numbers of bacteria, and actinomycete in the rhizosphere soils cultivated GM and non-GM trigonal cactus were similar to each other, and there was no significant difference. Dominant bacterial phyla in the rhizosphere soils cultivated with GM and non-GM trigonal cactus were Proteobacteria, Uncultured archaeon, and Uncultured bacterium. The denaturing gradient gel electrophoresis (DGGE) profiles show a similarpatterns, significant difference was not observed in each other. DNA was isolated from soil cultivated GM and non-GM trigonal cactus, we analyzed the persistence of the inserted gene by PCR. Amplification of the inserted genes was not observed in the soil DNA, which was collected after harvest. CONCLUSION(S): This result suggests that the GM trigonal cactus cultivation does not change significantly the microbial community

유전자변형 작물이 토양 미생물상에 미치는 영향

이기종 ( Ki Jong Lee ),오성덕 ( Sung Dug Oh ),손수인 ( Soo In Sohn ),류태훈 ( Tae Hun Ryu ),박종석 ( Jong Sug Park ),이장용 ( Jang Yong Lee ),조현석 ( Hyun Suk Cho ),안병옥 ( Byung Ohg Ahn ) 한국환경농학회 2012 한국환경농학회지 Vol.31 No.2

BACKGROUND: Genetically modified (GM) crops must receive relevant regulator`s authorization before they can be sold as seed or used food, feed and processing. Before approving any GM crop, the relevant government ministries are required to examine environmental risk assessment to make scientifically sound and socially acceptable decisions. But one of the least studied and understood areas in the environmental risk assessment of GM crops are their impact on soil microbial community. METHODS AND RESULTS: Recently, advanced methods have been developed to characterize the soil microbial community in various environments. In this study, the culture-dependent and culture-independent technical approaches for profiling soil microbial communities are summarized and their applicability to assess GM crops are discussed. CONCLUSION(S): We concluded that the effect of GM crops on soil microbial community need to be assessed on a case by case basis. The combination of culture-dependent and culture-independent method was necessary for reliable and detailed assessment of effect of GM crops on soil microbial community.

비타민 A 강화벼 급이가 벼물바구미( Lissorhoptrus oryzophilus)의 살충제 감수성에 미치는 영향

오성덕 ( Sung Dug Oh ),이기종 ( Ki Jong Lee ),박수윤 ( Soo Yun Park ),류태훈 ( Tae Hun Ryu ),김재광 ( Jae Kwang Kim ),손수인 ( Soo In Sohn ),김진서 ( Jin Seo Kim ),하선화 ( Sun Hwa Ha ),박종석 ( Jong Sug Park ),안병옥 ( Byung Ohg 한국환경농학회 2012 한국환경농학회지 Vol.31 No.3

BACKGROUND: The carotenoid-biofortified (PAC) rice was generated by inserting phytoene synthase (Psy) and carotene desaturase (Crtl) genes isolated from Capsicum annuum cv. Nockwang and Pantoea ananatis into the genome of a conventional variety of rice (Nakdongbyeo). In our present study, we studied the effects on insecticide susceptibility of Rice Water Weevil (Lissorhoptrus oryzophilus). METHODS AND RESULTS: The L. oryzophilus were fed on carotenoid-biofortified (PAC) rice and its near non-genetically modified (GM) counterparts (Nakdongbyeo) under 25±1℃, humidity of 60±5%, and photoperiod 16L: 8D for more than 60 days. Ten adults were soaked in the Clothianidin SC solution for 5 second in different concentrations, and were detected the mortalities after 24, 48 and 72 hours respectively. Every experiment was conducted with three replications. The cumulative mortalities of L. oryzophilus exposed to Clothianidin SC were similar between two types of feed administration. CONCLUSION: The results of this study suggested that carotenoid-biofortified rice might not affect the insecticide susceptibilities of Lissorhoptrus oryzophilus.