Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Antifungal Activity of Zanthoxylium schinifolium Against Fusarium graminearum, a Barley Powdery Mildew Fungus.

보리 흰가루병 곰팡이 Fusarium graminearum에 대한 산초 추출물의 항진균 활성

  • Kim, Byum-Soo (School of Bioresource Science, Andong National University) ;
  • Jang, Han-Su (Gyeongbuk Institute for Bioindustry) ;
  • Choi, Chung-Sig (HansBio Co., Bl center) ;
  • Kim, Jong-Sik (Dept. of Biological Science, and Andong National University) ;
  • Kwon, Gi-Seok (School of Bioresource Science, Andong National University) ;
  • Kwun, In-Sook (Dept. of Food and Nutrition, Andong National University) ;
  • Son, Kun-Ho (Dept. of Food and Nutrition, Andong National University) ;
  • Sohn, Ho-Yong (Dept. of Food and Nutrition, Andong National University)
  • Published : 2008.07.30
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Abstract

The powdery mildew, a fungal plant disease found in varieties of plant cultures, is occurred by attack with Fusarium sp., Sphaerotheca sp., Leveilluna sp., and Eryshipe sp.. In this study we investigated the control of Fusarium graminearum, a barley powdery mildew fungus, by natural plant extracts. Among the 900 plant extracts tested, Zanthoxylum schinifolium, Ligusticum acutilobum, Bidens frondosa L., Dictamnus dasycarpus, Evodia officinalis, Disporum sessile, Scopolia japonica Max., Styrax japonica S. et Z., Dictamnus dasycarpus Turcz., Sinomenium acutum Rehder et Wils., Eugenia aromaticum, Rubus parvifolius L., Reynoutria elliptica, Coptis chinensis, Paeonia lactiflora Pall., Rheum undalatum, Paeonia suffruticosa, Oenothera odorata Jacq., Euphorbia pekinensis Rupr., and Nepeta cataria were selected based on spore germination inhibition assay. Further mycelial growth inhibition assay with economical and safety considerations led us to finally select Z. schinifolium (sancho) for control of F. graminearum. To produce antifungal sancho extract, methanol was suitable for extraction and subsequent fractionations of the extract showed that the water residue mainly had antifungal activity. The sancho extract and its fractions showed minor antibacterial activity against different pathogenic or food spoilage bacteria, but they did not show any harmful effects against young tomato plant by treatment of $1,000\;{\mu}g/ml$ in green chamber test. These results suggested that the extract of sancho has high potentials on control of a powdery mildew fungus, F. graminearum.

흰가루병은 거의 모든 식물재배에서 나타나며, 다양한 곰팡이에 의해 발병한다. 본 연구에서는 천연물 추출물을 이용한 식물병원성 곰팡이 제어가능성을 검토하기 위해, 보리 흰가루병에서 분리된 Fusarium graminearum을 대상으로 900여종의 천연물 추출물의 항진균 활성을 평가하였다. 먼저 포자 발아억제 활성평가 결과 산초, 당귀, 미국가막사리, 까마중, 오수유, 윤판나물, 미치광이풀, 때죽나무, 백선, 방기, 정향, 멍석딸기, 호장근, 천황련, 작약, 대황, 모란, 달맞이꽃, 대극, 개박하 추출물을 1차 선별하였으며, 균사 생육억제 활성 원재료 확보 용이성 및 실제 적용 가능성 등을 고려하여 산초 추출물을 최종 선정하였다. 산초 추출물 조제 시 methanol 추출이 효율적이며, 순차적 유기용매 분획물의 경우 물 잔류물에서 항진균 활성이 나타났다. 그러나 methanol 추출물에 비해 분획물의 활성이 다소 감소하여 다양한 물질이 보완적으로 항진균 활성을 나타냄을 추측할 수 있으며, 미약하지만 methanol 추출물 및 분획물에서 항진균 활성도 확인하였다. 토마토 묘목을 이용한 산초 추출물의 활성 분획물의 약해평가 결과 $1,000\;{\mu}g/ml$ 농도 처리 시에도 특이한 약해는 나타나지 않았다. 본 연구결과는 F. graminearum에 의해 나타나는 흰가루병 제어에 산초 추출물이 유용함을 제시하고 있다.

Keywords

References

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