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자료유형
학술저널
저자정보
Lee, Chi-Hoon (Department of Bioenvironmental Chemistry, Chonbuk National University) Jeon, Ju-Hyun (Department of Bioenvironmental Chemistry, Chonbuk National University) Lee, Sang-Guei (Department of Bioenvironmental Chemistry, Chonbuk National University) Lee, Hoi-Seon (Department of Bioenvironmental Chemistry, Chonbuk National University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제53권 제4호
발행연도
2010.1
수록면
464 - 469 (6page)

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This study examined the insecticidal effects of Sebastiania corniculata materials against Laodelphax striatellus, Nilaparvata lugens, and Sogatella furcifera. Based on the lethal $dose_{50}$ ($LD_{50}$) values, the chloroform fraction of S. corniculata showed the most potential activity against L. striatellus ($1.09\;{\mu}g$/female), N. lugens ($4.46\;{\mu}g$/female), and S. furcifera ($2.32\;{\mu}g$/female). Therefore, we purified the active component of the chloroform fraction, using various chromatographies, and identified it as 8-hydroxyquinoline. To establish the structure-activity relationships, we tested 8-hydroxyquinoline and its derivatives against the 3 planthopper species. Based on 48 h $LD_{50}$ values, isoquinoline and 6-methoxyquinoline were the most effective against the 3 species. 8-Hydroxyquinoline, 4-methylquinoline, 6-methylquinoline, and 8-hydroxy-2-methylquinoline showed high insecticidal effects. These results indicate that changing the nitrogen atom's position in quinoline's pyridine ring plays an important role in the insecticidal effects. We found a high correlation between the introduction of a functional group into the quinoline structure and toxicity against the 3 planthoppers. Our results indicate these insecticidal effects seem to require quinoline derivatives containing hydroxyl ($R_4$ position), methyl ($R_2$ and $R_3$ position), and methoxy ($R_3$ position) groups and a structural isomer of quinoline and suggest that these derivatives may be useful as new preventative agents against the damage caused by a wide range of pests in rice farming areas.

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