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        검색결과 46

        45.
        2012.07 서비스 종료(열람 제한)
        Disease is one of the significant factors to damage for the crop productivity, including rice. Although there are many methods to avoid from several diseases such as chemical pesticides and biological treatments, it has been appreciated that the most economical and environmentally effective method of disease control is application of resistance genes. A survey (Dardick & Ronald, 2006) reported that plant kinome has a small number of non-RD kinase (nRDK) (4-29% of total kinase), all known or predicted pattern recognition receptors (PRRs) fall into the class. We here introduce a strategy to identify rice resistance genes that are probably encoding PRRs. We selected 130 nRDK genes by combinational analysis of QTL and bioinformatics, 61 of rice mutant lines of 130 candidates inoculated by Xanthomonas oryzae pv. oryzae (Xoo) and Magnaporthe grisea. (M. grisea), and disease progression was monitored. Lesion lengths of the activation mutant lines for nRDK-08 and nRDK-18 genes reduced more than 34% compared to wild type of rice (Dongjin) and other mutant lines. The nRDK-03 and nRDK-17 gene activation rice line had remarkably smaller lesion lengths by M. grisea infection. Our results suggest that a reverse genetic approach using bioinformatics and T-DNA tagging system successfully identified nRDK genes conferring a resistance against Xoo and M. grisea.
        46.
        2000.12 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        식물추출물로부터 보다 안전하고 효과있는 새로운 tyrosinase 저해제를 개발하기 위한 연구의 일환으로 먼저 기존의 spectrophotometric assay를 개선한 새로운 TLC 검색방법을 사용하여 여러 식물추출물을 검색한 결과 백자인의 메탄올추출물이 강한 tyrosinase 저해활성을 갖고 있음을 알 수 있었다. 따라서 백자인의 메탄올추출물로부터 tyrosinase 저해제를 분리하기 위하여 먼저 탈지 메탄올추출물을 에테르, 에틸아세테이트
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