• Title/Summary/Keyword: Kunsan

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Genetic Similarity and Diversity in Crucian Carp(Carassius carassius) Populations by Polymerase Chain Reaction-Random Amplified Polymorphic DNAs

  • Yoon, Jong-Man;Kim, Tae-Sun;Kim, Jong-Yeon
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.332-333
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    • 2001
  • Genomic DNA was extracted from the blood of the freshwater crucian carp(Carassius carassius) from Kunsan in Korea, representing genetic similarity by polymerase chain reaction amplification of DNA as twelve of arbitrary primers. The electrophoretic analysis of polymerase chain reaction-random amplified polymorphic DNAs(PCR-RADP) products showed the high levels of similarity between different individuals in crucian carp.

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Bremia lactucae causing Downy Mildew on Lactuca serriola in Korea

  • Lee, Jin A;Kim, Bora;Lee, Dong-Jae;Choi, Young-Joon
    • The Korean Journal of Mycology
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    • v.49 no.3
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    • pp.379-383
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    • 2021
  • Lactuca serriola L. (syn. L. scariola L.), commonly known as prickly lettuce, invaded Korea in the late 1970s. The plant has since become widely naturalized and disruptive to native plant communities. In May 2020, downy mildew infections were observed on L. serriola in Gimje-si, Korea. Molecular phylogenetic and morphological analyses identified the causal agent as Bremia lactucae. This is the first report of B. lactucae infection on L. serriola in Korea.

Raman Spectroscopy Study on the Adsorption Orientation of Biphenylcarboxlic Acid Derivatives (라만 분광법을 이용한 Biphenylcarboxylic Acid 유도체들의 흡착 배향 연구)

  • Heay Ran Choi;Kyu Seok Choi;Il Ki Jung;Hong Seok Song;Keun Ok Han;Ho Seob Choi;Sang Hee Lee;Soo-Chang Yu
    • Journal of the Korean Chemical Society
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    • v.47 no.5
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    • pp.439-446
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    • 2003
  • Surface-enhanced Raman(SER) spectroscopy was utilized to investigate the adorption orientation of the 4-biphenylcarboxylic acid(BPCA) derivatives, such as 4'-cyano-BPCA(c-BPCA), 4'-mercapto-BPCA(m-BPCA), and 4'-amino-BPCA(a-BPCA), which were adsorbed on Au and Ag colloid monolayers. For the systematic approach, information regarding the adsorption behavior of benzoic acid, biphenyl, and BPCA was applied to the target molecules. From the spectral behaviors of benzene ring, C-H stretching, carboxylate anion, and the other finger printing vibrational modes, it was concluded that only the m-BPCA was adsorbed tilt with thiol group being adsorbed on Au surface, whereas the other molecules were adsorbed flat on both Au and Ag surfaces.