한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)

  • 제51권3호
  • /
  • Pages.209-214
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  • 2006
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  • 0252-9777(pISSN)
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  • 2287-8432(eISSN)
한국작물학회 (The Korean Society of Crop Science)
권호 표지

콩 발아중의 Lipoxygenase 활성 변화

Change of Lipoxygenase Activity during Seed Germination in Soybean

  • 발행 : 2006.06.01
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초록

본 연구는 콩의 초기 유묘생육기간 동안의 lipoxygenase가 결여된 진품콩, 진품콩 2호와 정상적인 태광콩의 lipoxygenase 활성 변화를 비교 검토하여 알아보기 위하여 실시하였다. Lipoxygenase 결여 콩 품종의 초기 생육 및 lipoxygenase 활성 변화에서 유묘의 생체중은 진품콩 2호와 태광콩이 진품콩 보다 증대되는 경향이었고 하배축의 길이는 진품콩과 진품 콩 2호가 태광콩보다 서서히 증가하였지만 하배축의 두께는 진품콩과 진품콩 2호가 태광콩보다 두껍게 증가하는 경향이었다. 자엽의 lipoxygenase 활성 변화는 유형 I lipoxygenase 활성에서 진품콩과 태광콩이 계속 감소하는 경향이었지만 진품콩 2호는 활성이 나타나지 않았다. 유형 II lipoxygenase 활성에서 태광콩은 발아 2일째부터 계속 증가하다가 발아 4일 째에서 5일째 사이에 최대의 활성이 나타났고 발아 5일째부터 다시 감소하는 경향이었다. 하배축의 유형 I lipoxygenase 활성에서는 진품콩과 태광콩이 발아 l일째부터 급격히 감소하였다. 하배축의 유형 II lipoxygenase 활성은 3 품종 모두 나타나지 않았다.

Three lipoxygenase isozymes in soybean seeds are thought to be a major contributor to lipid peroxidation and generation of free radicals which may result in seed deterioration. This study was conducted to get the basic information for changing lipoxygenase activity during seed germination in lipoxygenase-lacking soybeans. Fresh weight of soybean seedling of Jinpumkong 2 and Taekwangkong increased more rapidly than that of Jinpumkong. Hypocotyls of Jinpumkong and Jinpumkong 2 were longer and thicker than that of Taekwangkong. Type I lipoxygenase activity (pH 9.0) in cotyledon of Jinpumkong lacking lipoxygenase-2, 3 showed higher than that of Taekwangkong, and Type I lipoxygenase activity of two cultivars decreased continually. On the other hand, Type II lipoxygenase activity of Taekwangkong began to increase continually two days after germination, reached to the maximum between 4 days and 5 days, and began to decrease continually five days after germination. Type I and II lipoxygenase activity in hypocotyls was not detected in all soybean cultivars.

키워드

참고문헌

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