Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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SO42- Uptake and Assimilation in Forage Rape (Brassica napus)

유채의 SO42- 흡수 및 동화에 관한 연구

  • Li, Ming (Chonnam National University) ;
  • Jin, Yu-Lan (BK21 Research Team for the Control of Animal Hazards using Biotechnology, College of Agriculture & Life Science, Chonnam National University) ;
  • Lee, Bok-Ryu (Chonnam National University) ;
  • Li, Lu-Shen (Chonnam National University) ;
  • Kim, Dae-Hyun (Chonnam National University) ;
  • Kim, Tae-Hwan (Chonnam National University)
  • Published : 2008.06.30
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Abstract

To investigate the sulfate utilization efficiency that has been examined in rape (Brassica napus L.) cultivars (cv. Akela and Colosse). During 72h of treatment, in two cultivars, ${SO_4}^{2-}$ uptake was significantly higher in complete S condition (2.0 mM ${SO_4}^{2-}$) than that of the S-deficient condition (2.0 mM ${SO_4}^{2-}$). In young leaves, ATP sulfurylase activity increased after S-deficient treatment. However, in old leaves, ATP sulfurylase activity was not significantly changed in Akela. Glutathione concentration in young leaves significantly increased in all cultivars examined under S-deficient condition. The rate of increase in glutathigne concentration caused by S-deficiency treatment was higher in Akela. However, in old leaves, the glutathione concentration in Akela significantly decreased. The results suggest that ${SO_4}^{2-}$ uptake and ATP sulfurylase in rape plants were species specific, and that ${SO_4}^{2-}$ uptake was highly related to its assimilation into S containing compound such as glutathione.

유채의 황 이용성에 대한 영향을 조사하기 위하여 유채 2 품종(cv. Akela, Colosse)을 2.0mM ${SO_4}^{2-}$와 0.2mM ${SO_4}^{2-}$에서 ${SO_4}^{2-}$ 흡수, ATP sulfurylase의 활성과 염조직내의 glutathione(GSH) 함량을 측정하였다. 0.2mM ${SO_4}^{2-}$에서 두 품종 모두 2.0mM ${SO_4}^{2-}$에 비해 현저하게 낮은 ${SO_4}^{2-}$ 흡수율을 나타냈다. 0.2mM ${SO_4}^{2-}$에서 APT sulfurylase의 활성은 어린잎에서 두 품종 모두 증가하였으나 성숙된 잎에서의 활성은 큰 변화가 얼었다. 0.2mM ${SO_4}^{2-}$에서 glutathione의 함량은 어린잎에서 두 품종 모두 증가하였으나 성숙된 잎에서는 Akela에서만 현저하게 감소하였다. 이러한 결과들은 유채품종간의 ${SO_4}^{2-}$ 흡수와 ATP sulfurylase의 특이성 뿐만 아니라, ${SO_4}^{2-}$ 흡수가 glutathione과 같은 황을 포함하고 있는 화합물로의 동화와 밀접한 관련이 있음을 나타낸다.

Keywords

References

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