• Title/Summary/Keyword: 분자 유전학

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Bottlenecks of conventional approaches and complemental expectations of molecular biology in variental improvement of vegetable crops (채소 품종 개량에 있어서 전통기술의 한계 극복을 위한 분자유전학의 역할 기대)

  • 윤진영;오대근
    • Proceedings of the Botanical Society of Korea Conference
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    • 1995.07a
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    • pp.109-130
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    • 1995
  • 지난 반세기간에 우리나라에 채소 육종은 주요 채소의 주년공급을 가능하게 하였으며, 토지 생산성의 향상, 상품화율의 증대, 품질의 향상 등의 면에서도 괄목할 만한 성과를 거두었고 인공교잡은 물론이고 웅성불임성과 자가불화합성의 활용에 의한 1대잡종 품종의 일반화로 채소 산업의 발전에 크게 기여하였다. 앞으로는 기왕의 업적을 심화시키는 한편, 생산비를 절감하기 위한 생력화, 기계화 재배용 품종 및 내제초제성 품종의 개발 환경보호 및 식품안정성의 확보를 위한 내병층성 품종 개발, 수출시장과 다양화하는 국내의 시장기호에 대응하고 가공 식품의 표준화된 품질관리를 지원할 수 있도록 품질 면에서의 개량과 신작물 또는 신생태형 품종의 개발에도 더욱 노력이 필요하다. 이러한 육종목표를 달성하기 위한 유전자원의 확보는 더욱 어려워질 것이며 유전 양식이 복잡하고, 환경요인의 작용이 상대적으로 크기 때문에 전통적인 육종 방법만으로는 목표달성에 필요한 인적, 물적, 시간적 소요가 훨씬 증가될 전망이다. 유전변이의 창성 및 확대, 유용 대립인자의 도입, 동정 및 선발, 그리고 종자생산을 위한 자가 불화합성 및 웅성불임성과 개화·수정 관련 유전인자의 발현 조절에 분자유전학의 보완적 역할이 기대되며 이렇게 되면 전통육종과 분자유전학간의 잡종강세로 품종 개량의 효율은 크게 높아질 것이다.

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GENETIC CONTROL MECHANISM AND MOLECULAR BASIS OF NEURODEVELOPMENT (유전인자 조절기전과 신경발달의 분자 생물학적 특성)

  • Joung, Yoo-Sook
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.16 no.1
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    • pp.5-14
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    • 2005
  • There has been an enormous progress in understanding of how genes contribute to both normal and abnormal development. Also many laboratory works are exploring the intricacies of how to develop in the human central nervous system. Understanding the mechanisms of cortical development gives essential insight into the pathogenesis of many genetic and acqured developmental psychiatric disorders, including autism, schizophrenia, and teaming disorder. Genes have been implicated in an ever-increasing number of disorders. Advance in genetics have begun to clarify the molecular basis of not only single-gene disorders, but also more complex phenotypes.

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Current status and prospects of chrysanthemum genomics (국화 유전체 연구의 동향)

  • Won, So Youn;Kim, Jung Sun;Kang, Sang-Ho;Sohn, Seong-Han
    • Journal of Plant Biotechnology
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    • v.43 no.3
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    • pp.272-280
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    • 2016
  • Chrysanthemum is one of the top floriculture species with ornamental and medicinal value. Although chrysanthemum breeding program has contributed to the development of various cultivars so far, it needs to be advanced from the traditional phenotype-based selection to marker-assisted selection (molecular breeding) as shown in major cereal and vegetable crops. Molecular breeding relies on trait-linked molecular markers identified from genetic, molecular, and genomic studies. However, these studies in chrysanthemum are significantly hampered by the reproductive, genetic, and genomic properties of chrysanthemum such as self-incompatibility, inbreeding depression, allohexaploid, heterozygosity, and gigantic genome size. Nevertheless, several genetic studies have constructed genetic linkage maps and identified molecular markers linked to important traits of flower, leaf, and plant architecture. With progress in sequencing technology, chrysanthemum transcriptome has been sequenced to construct reference gene set and identify genes responsible for developments or induced by biotic or abiotic stresses. Recently, a genome sequencing project has been launched on a diploid wild Chrysanthemum species. The massive sequencing information would serve as fundamental resources for molecular breeding of chrysanthemum. In this review, we summarized the current status of molecular genetics and genomics in chrysanthemum and briefly discussed future prospects.

Overview of Cytogenetic Technologies (세포유전학 기술에 관한 고찰)

  • Kang, Ji-Un
    • Korean Journal of Clinical Laboratory Science
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    • v.50 no.4
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    • pp.375-381
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    • 2018
  • Cytogenetic analysis plays an important role in examinations of a variety of human disorders. Over the years, cytogenetic analysis has evolved to a great extent and become a part of routine laboratory testing; the analysis provides significant diagnostic and prognostic results for human diseases. Microarray in conjunction with molecular cytogenetics and conventional chromosome analysis has transformed the outcomes of clinical cytogenetics. The advantages of microarray technologies have become obvious to the medical and laboratory community involved in genetic diagnosis, resulting in greatly improved visualization and validation capabilities. This article reviews how the field is moving away from conventional cytogenetics towards molecular approaches for the identification of pathogenic genomic imbalances and discusses practical considerations for the routine implementation of these technologies in genetic diagnosis.

Current Status on Molecular Genetic Study and Comparative Genomic Analysis of Virulence Related Genes in Xanthomonas oryzae pv. oryzae (벼 흰잎마름병균(Xanthomonas oryzae pv. oryzae)의 병원성 유전자의 분자유전학적 연구현황 및 비교유전체 분석)

  • Kang, Hee-Wan;Park, Young-Jin;Lee, Byeong-Moo
    • Korean Journal of Microbiology
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    • v.44 no.1
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    • pp.1-9
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    • 2008
  • Xanthomonas oryzae pv. oryzae (Xoo) is the causal agent of bacterial blight on rice. In this paper, current status on molecular genetic study of major virulence genes, hypersensitive response and pathogenicity (hrp), productions of extracellular polysaccharide (EPS), extracellular enzymes and lipopolysaccharides (LPS), avr genes were reviewed. The IS elements with 611 copies including 133 ORF IS were inserted in various regions of the Xoo genome and in expecially regions franking virulence genes. Whole genome sequence of X. oryzae pv. oryzae KACC10331 were used for defining genetic organization of the virulence genes. Futhermore, the virulence genes in Xoo genome were compared to those of other Xanthomonas species in Blast GenBank data base.

Application and Prospects of Molecular Imaging (분자영상의 적용분야 및 전망)

  • Choi, Guyrack;Lee, Sangbock
    • Journal of the Korean Society of Radiology
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    • v.8 no.3
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    • pp.123-136
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    • 2014
  • In this paper, we study to classify molecular imaging and applications to predict future. Molecular imaging in vivo at the cellular level and the molecular level changes taking place to be imaged, that is molecular cell biology and imaging technology combined with the development of the new field. Molecular imaging is used fluorescence, bioluminescence, SPECT, PET, MRI, Ultrasound and other imaging technologies. That is applied to monitoring of gene therapy, cell tracking and monitoring of cell therapy, antibody imaging, drug development, molecular interaction picture, the near-infrared fluorescence imaging of cancer using fluorescence, bacteria using tumor-targeting imaging, therapeutic early assessment, prediction and therapy. The future of molecular imaging would be developed through fused interdisciplinary research and mutual cooperation, which molecular cell biology, genetics, chemistry, physics, computer science, biomedical engineering, nuclear medicine, radiology, clinical medicine, etc. The advent of molecular imaging will be possible to early diagnosis and personalized treatment of disease in the future.