Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Influence of Salinity Treatment on Seed Germination and Polyamine Synthesis in Barnyard Grass(Echinochloa hispidula)

강피종자의 발아와 폴리아민 생합성에 대한 염류의 영향

  • Yun, Sol (Department of Plant Resources Science, Hankyong National University) ;
  • Lee, Su-Yeon (Department of Plant Resources Science, Hankyong National University) ;
  • Lim, Hyo-Jin (Department of Plant Resources Science, Hankyong National University) ;
  • Shim, Myoung-Bo (Institute of Ecological Phytochemistry, Hankyong National University) ;
  • Sung, Jwa-Kyung (Department of Agronomy, Chungbuk National University) ;
  • Kim, Tae-Wan (Department of Plant Resources Science, Hankyong National University)
  • 윤솔 (한경대학교 식물자원과학과) ;
  • 이수연 (한경대학교 식물자원과학과) ;
  • 임효진 (한경대학교 식물자원과학과) ;
  • 심명보 (한경대학교 식물생태화학연구소) ;
  • 성좌경 (충북대학교 농학과) ;
  • 김태완 (한경대학교 식물자원과학과)
  • Received : 2003.12.06
  • Accepted : 2004.01.30
  • Published : 2004.02.29
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Abstract

To illuminate the physiological response to salinity, barnyard grass (Echinochloa hispidula) was germinated with high concentration of NaCl and KCL. Duration and promptness of seed germination were observed. Under salt stress, lipid peroxidation and polyamine biosynthesis were also analyzed. It appeared that high salt treatments per se did not provoke an inhibition of germination although the process of germination was significantly delayed. In context of lipid peroxidation and polyamine biosynthesis, we would imply that barnyard grass is tolerant to salinity. The increase in lipid peroxidation and putrescine content was prolonged only for 1 day after saline treatment. It could be concluded that these early acciimulation of putrescine and production of lipid peroxide seems to be associated with salt tolerance in the short-term. The physiological interest of these responses was discussed.

염류장애의 생리적 반응을 검토하고자 강피(Echinochloa hispidula) 종자를 고농도의 NaCl과 KCl 조건하에서 발아시켰다. 발아의 기간과 진전속도를 측정하였으며, 염류스트레스 조건에서의 지질과산화와 폴리아민 생합성양상을 분석하였다. 고농도 염류처리 자체는 비록 발아를 상당히 지연시킬 수는 있지만 발아를 억제하지 못하는 것으로 나타났다. 지질과산화와 폴리아민 생합성에 견주어볼 때, 강피는 염류에 내성이 것으로 사료되었다. 지질과산화와 putrescine 함량의 증가는 염류처리 후 1일 동안만 지속되었다. 이러한 결과는 초기 putrescine 증가와 지질과산화수소의 생성이 단기간 동안의 염류 내성 기작과 밀접한 관계가 있다고 결론 내릴 수 있는 근거가 되었다.

Keywords

References

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