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Effect of NaCl Treatment on Growth and Physiologycal Activity of Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara

NaCl 처리가 눈개승마[Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara]의 생육과 생리활성에 미치는 영향

  • 남현화 (전북대학교 농업생명과학대학 작물생명과학과) ;
  • 이주희 (전북대학교 농업생명과학대학 작물생명과학과) ;
  • 추병길 (전북대학교 농업생명과학대학 작물생명과학과)
  • Received : 2017.08.25
  • Accepted : 2017.10.27
  • Published : 2017.11.30

Abstract

This study was conducted to investigate the growth and physiologycal activitis of Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara under the NaCl treatment conditions (0, 100, 200, 300 mM). After 30 days treatment, the growth and physiologycal activitis were investigated. In the growth of plants, the plant height, leaf width, leaf length and ion level were reduced at NaCl treatments of more than 100 mM. The total polyphenol content was decreased by NaCl in a concentration-dependent manner compared to the control group. The contents of total flavonoids did not show any difference at the concentration of 200 mM and 300 mM. However, the content of total flavonoid decreased compared with that of control. In antioxidant activity, the DPPH and ABTS radical scavenging activity and reducing power activity were decreased by NaCl concentration compared to the control. When changes in the content of NO production was monitored by ELISA, production inhibitory effect was 94.5%, 70%, 63%, 56.9% in NaCl concentration of 0, 100, 200, 300 mM, respectively. The growth, ion level, antioxidant and anti-inflammation activity of Aruncus dioicus var. kamtschaticus was reduced at NaCl treatments of more than 100 mM.

본 논문은 염(NaCl) 처리 시 눈개승마의 생육과 생리활성에 미치는 영향을 알아보기 위해 0, 100, 200, 300 mM의 농도로 염 처리를 하였다. 처리 30일 후 초장, 엽폭, 엽장 및 무기 이온 함량을 측정하여 생육에 미치는 영향을 조사하였고 생리활성에 미치는 영향을 확인하기 위해 항산화 활성 및 염증 생성 물질인 NO 생산량을 측정하였다. 그 결과, 염 처리 시 대조구에 비하여 생육 저하되었으며 염 농도 100, 200, 300 mM 처리구 간의 차이는 뚜렷하게 나타나지 않았다. 무기이온 함량은 염 처리시 $Na^+$의 함량은 증가하였고 $K^+$의 함량은 감소하였으며 $Ca^{2+}$ 함량은 염 처리 시 대조구에 비해 증가하였고 $Mg^{2+}$ 함량에서는 차이를 보이지 않았으나, 100 mM 이상의 농도에서는 $Na^+$ 함량이 현저하게 증가됨에 따라 식물 생장에 불리한 $K^+/Na^+$, $Ca^{2+}/Na^+$, $Mg^{2+}/Na^+$ 비를 초래하였다. 총 폴리페놀 함량과 플라보노이드 함량은 100 mM 이상의 염 농도에서 모두 감소하였으며 염 농도가 증가함에 따라 감소하는 경향을 보였다. DPPH, ABTS radical 소거활성 및 환원력에서도 대조구에 비해 염 처리농도가 증가함에 따라 감소하였다. 염 처리 시 눈개승마의 마우스 대식세포 Raw 264.7 cell에서의 세포독성 및 항염증 활성에 미치는 영향을 알아보기 위해 CCK assay와 염증 생성 물질인 NO 생산량을 측정한 결과, 염 처리구에서 모두 100% 이상의 생존율을 보여 세포독성이 없음을 확인하였다. 또한, NO 생산량의 경우 항산화 활성의 경향과 마찬가지로 대조구에 비해 100 mM 이상의 염 처리구에서 NO 생산 억제 활성이 감소하는 경향을 보였다. 따라서, 염 처리시 100 mM 이상의 농도에서 눈개승마의 생육과 항산화, 항염증 활성이 저하됨을 확인하였으며, 이는 염 스트레스로 인해 생장과 생리활성 저하를 유발된 것으로 생각된다. 따라서, 눈개승마의 경우 100 mM 미만의 농도에서 생육 및 생리활성 유지에 적합한 조건을 확립하기 위한 추가 연구가 이루어져야 할 것으로 사료된다.

Keywords

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