Antioxidant Enzyme Activities and Soil Properties of Healthy and Declining Abies koreana (Wils.) in Mt. Halla

한라산 구상나무 건전개체와 쇠약개체의 항산화효소활성 및 토양특성

  • Lim, Jong-Hwan (Department of Forest Environment, Korea Forest Research Institute) ;
  • Woo, Su-Young (Department of Environmental Horticulture, University of Seoul) ;
  • Kwon, Mi Jeong (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Kim, Young Kul (Department of Forest Environment, Korea Forest Research Institute)
  • 임종환 (국립산림과학원 산림환경부 산림생태과) ;
  • 우수영 (서울시립대학교 환경원예학과) ;
  • 권미정 (서울대학교 농업과학공동기기센터) ;
  • 김영걸 (국립산림과학원 산림환경부 산림생태과)
  • Received : 2006.08.18
  • Accepted : 2006.09.29
  • Published : 2007.03.31

Abstract

In order to examine the differences in antioxidant enzyme activities which represent defence mechanism to stressful environments, and soil properties between healthy and declining (or unhealthy) trees, we selected three sites, Witseorum, Youngsil and Sungpanak (Jindallebat). Antioxidant enzymes including Ascorbate peroxidase (APX) and Glutathione Reductase (GR), forest soil properties including soil texture, soil pH, organic matter, total nitrogen, available phosphate, cation exchange capacity, exchangeable cation content and nutrient contents in leaves of Abies koreana (Korean fir) trees were analyzed. There were no significant differences between healthy and declining trees in GR activity. However, seasonal difference in antioxidant enzyme activity was observed. GR activity was lower in June and August than that of September. Soil chemical and physical properties of each site showed a tendency that organic content, total nitrogen content, available phosphorus, cation exchange capacity and cation content were lower at the site of declining trees than the site of healthy trees.

구상나무의 스트레스 적응능력을 보여주는 항산화효소활성, 건전개체와 쇠약한 개체의 토양의 물리화학적 특성을 알아보기 위하여 윗세오름, 영실 그리고 성판악(진달래밭)지역의 건전개체와 쇠퇴개체를 조사 분석하였다. 항산화효소활성으로는 Ascorbate peroxidase(APX)와 Glutathione Reductase(GR)를, 토양특성으로는 토성, pH, 유기물함량, 전 질소함량, 유효인산, 양이온치환용량, 양이온의 함량을 분석하였고, 구상나무 잎을 채취하여 식물체의 양분함량을 분석하였다. APX, GR 효소 활성에 있어서 건전개체와 쇠약한 개체 사이에는 큰 차이가 없었으나, 계절적으로 6월과 8월에 비해 9월의 항산화효소 활성도가 낮게 나타났다. 토양분석 결과 유기물함량, 전질소, 유효인산, 양이온치환용량, 양이온 함량이 건전개체가 있는 곳에 비해 쇠약한 개체가 있는 곳의 토양이 낮게 나타났다.

Keywords

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