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최선화,김영일,김민호,이변우,오종민 경희대학교 2003 環境硏究 論文集 Vol.12 No.-
This study was carried out to nvestigate- the effects of T-P concentrations in irrigation water on the growth, yield, and grain quality of rice. It acquire fundamental knowledges to set up irrigation water quality standards. The pot experiment was conducted with 5 treatments using irrigation water. It consisted of various total phosphorus concentrations (control, 1, 2, 5, 10 mg/L) and replicated four times with randomized block design. the results of this study showed that as t-P concentrations in irrigation water increases, plant height tended to increase. Dry weight of rice plant at t-P 10 mg/L was significantly higher than the control. However, t-P in irrigation water did not affect plant height, tiller number, plant; dry weight, yield, and quality of rice.
한국인에서 도파민 D4 수용체 다형성과 Novelty Seeking 성격 특성의 연관성
이헌정,이홍석,강화연,김린,이민수,서광윤,변영찬 大韓神經精神醫學會 2002 신경정신의학 Vol.41 No.4
연구목적 : 저자들은 한국인에서 도파민 D4 수용체(DRD4) 유전자의 다형성과 성격의 관련성을 알아보고자 본 연구를 시행하였다. 방 법 : 173명의 건강한 한국인 여자 청소년(13.88±0.29세)을 대상으로 하여 성격 기질 설문지(Temperament and Character Inventory : TCI)를 작성하도록 하였으며, 이들에서 DRD4 exon Ⅲ 48-bp VNTR(variable numbers of tandem repeats) 다형성을 분석하였다. 결 과 : DRD4 exon Ⅲ Vntr에서 긴 대립유전자(≥5 repeats)를 가진 군이 긴 대립유전자를 가지지 않은군에 비하여 Novelty Seeking 척도 점수가 유의하게 높았다(t=2.11,p=0.037). 결 론 : 본 연구 결과는 DRD4-exon Ⅲ의 긴 대립유전자가 Novelty Seeking 성격과 관련이 있다는 기존의 외국에서의 연구결과를 다시금 확인해주는 것이다. Objectives : We investigated the relationship of personality traits with dopamine D4 receptor(DRD4) exon Ⅲ polymorphism in a Korean population. Methods : We analysed DRD4 exon Ⅲ 48-bp repeats polymorphism in 173 Korean heakthy female adolescents(age=13.88±0.29years) who also completed Temperament and Charater Inventory(TCI). Results : Novelty seeking score of the TCI was significantly higher in the subjects with DRD4 long alleles(≥5 repeats) compares with the subjects without these (t=2.11, p=0.037). Conclusion : The present study supports the previous reports that long repeats of the DRD4-exon Ⅲ polymorphism are relatedwith Novelty Seeking personality.
N-AcPt function examination through N-acetylation method for negative selection in transgenic rice
Young-Hwa Kim,Oh-Jung Kwon,Ji-Hee Byun,Joo-Hwa Lee,Joon-Hyeong Cho 한국작물학회 2007 한국작물학회 학술발표대회 논문집 Vol.2007 No.11
Ornithine deacetylase (argE) gene as a negative selection marker gene was successfully co-transformed with SOD-APX or NDPK2 as a target gene to develop marker free transgenic rice. E.coli argE gene encodes an enzyme which activates N-acetyl phosphinothricin (N-AcPt) through deacetylation. The enzyme was reported that deacetylate N-AcPt, a non cyto-toxic compounds, to produce cyto-toxic PPT. So the argE gene can be used as a negative selection marker and N-AcPt can be used as a substrate of argE gene. Using former purification method (Kriete G., et al., 1996) was very expensive because the small amount of N-AcPt produced by the method. We developed a strategy to produce N-AcPt by means of chemical method. N-AcPt function was identified using hygromycin resistant T1 seeds on MS basal medium contained N-AcPt prior to utilization of argE gene as a negative selection marker in marker free transgenic rice. Negative selection effects were performed with T1 seeds containing argE gene under N-AcPt. This system provides a efficient negative selection effect from transgenic rice and that will be efficiently used for the production of marker gene free rice plants.