Effects of Magnesium Deficiency on Induction of Activity of Antioxidative Enzymes

Magnesium 결핍이 항산화효소의 활성유도에 미치는 영향

  • Kim, B.C. (Dept. of Agricultural Biology, College of Agriculture, Gyeongsang National Univ.) ;
  • Lee, J.J. (Dept. of Agricultural Biology, College of Agriculture, Gyeongsang National Univ.)
  • 김병철 (경상대학교 농과대학 농생물학과) ;
  • 이증주 (경상대학교 농과대학 농생물학과)
  • Received : 1997.10.19
  • Published : 1997.12.30

Abstract

The influence of deficient(7${\mu}M$) and suffcient(1000${\mu}M$) magnesium(Mg) supply on the content of mg, chlorophyll, protein and the activity of superoxide dismutase(SOD), scavengers of superoxide radical($O_2$), and ascorbate peroxidase(AP), $H_2O_2$scavenging enzyme, and glutathione redutase(GR) were studied in pumpkin(Cudurbita moscata $D_{UCHESNE}$) plants over a 11-day period. Over the 11 days Period of growth in nutrient solution with sufficient and deficient Mg supply, the contents of Mg, chlorophyll protein and the activities of the antioxidative enzymes remained more or less constant in Mg-sufficient leaves. In Mg-deficient leaves, the contents of Mg, chlorophyll and protein was seriously decreased with time, however the activities of SOD, AP and GR highly enhanced compared to those of Mg-sufficient. The results indicated the stimulative effect of Mg deficiency on toxic oxygen species and scavenging enzymes in plants.