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민병술(Min Byoung-Sul),진언선(Jin Eon-Seon),이미영(Lee Mi-Young) 한국산학기술학회 2004 한국산학기술학회 학술대회 Vol.- No.-
본 연구에서는 미세조류에 광스트레스를 가해서 특정 색소의 증가를 유도하였다. 광스트레스를 미세조류인 N.oculata에 각 각 가했을 때, 안세라크산틴 6.6 배 제아크산틴 8.6 배, 증가함을 HPLC로 분석하였다. 이러한 광스트레스에 노출되면 크산토필 회로에서 비올라산틴이 안세라크산틴과 제아크산틴으로 역위되어 광보호를 하기 때문이다.
이순희(Sun Hi Lee),강영희(Young Hee Kang),진언선(Eon Seon Jin),조영동(Young Dong Cho),김명원(Myeong Won Kim),이준승(June Seung Lee) 한국식물학회 1987 Journal of Plant Biology Vol.30 No.4
The effect of polyamine and Ca^2+ on D-glucose-6-phosphate cyclohydrolase activity was studied in Daucus carota root. The enzyme activity was reduced in response to increase in concentration of Ca^2+, not the Ca^2+-calmodulin complex. The inhibition effect due to Ca^2+ was reversed by polyamine, especially remarkable at low concentration of Ca^2+. The effect of the Ca^2+ on the enzyme seemed to compete wth polyamine according to the Lineweaver-Burk plot. The enzyme activity from carrot root protoplast cultured in the prescence of verapamil was higher than that of the control. Such cumulative results suggest that the inhibition by the Ca^2+ and enhancement or reversal by polyamine could regulate the biosynthesis of pectin and hemicellulose to some extent.
생체 생장에 관한 세포 생물학적 연구 - 당근 세포의 D - glucose - 6 - phosphate cyclohydrolase 활성에 미치는 polyamine 의 영향 -
조영동(Young Dong Cho),이순희(Sun Hi Lee),강영희(Young Hee Kang),김명원(Myeong Won Kim),김성호(Seong Ho Kim),진언선(Eon Seon Jin) 한국식물학회 1986 Journal of Plant Biology Vol.29 No.4
Effects of putrescine, spermidine and spermine on the activity of D-glucose-6-phosphate cyclohydrolase in the Daucus carota L. protoplast cultured for 4 days and effects of polyamines on the incorporation of D-[u^-14C]-glucose treated to protoplasts in culturemedium were investigated. The activity of D-glucose-6-phosphate cyclohydrolase was increased by polyamines and among them spermine was the most effective. Polyamines increased protein synthesis and this due to the increasing effect of the polyamines on the synthesis of glycoprotein which is one of cell wall components. The synthesis of cell polysaccharides, such as pectic substances, hemicelluloses and celluloses was increased by polyamines, which stimulated synthesis of pectin substances and hemicellulose more greatly than that of cellulose, and spermidine was the most effective. In the light of the above results it seems that the polyamines increase cell wall regeneration by the stimulation of enzyme activities which synthesize cell wall components.