Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Control Effects of 3-(4-Hydroxyphenyl)-propionic Acid Isolated Xenorhabdus nematophila K1 against Phytophthora Blight and Anthracnose of Red Pepper

Xenorhabdus nematophila K1 대사물질 3-(4-hydroxyphenyl)-propionic acid의 고추 역병과 탄저병에 대한 방제 효과

  • Cheon, Wonsu (Department of Plant Medicine, Andong National University) ;
  • Kim, Doyeon (Department of Plant Medicine, Andong National University) ;
  • Kim, Yonggyun (Department of Plant Medicine, Andong National University) ;
  • Hong, Yong Pyo (Department of Applied Chemistry, Andong National University) ;
  • Yi, Youngkeun (Department of Plant Medicine, Andong National University)
  • Received : 2013.03.19
  • Accepted : 2013.08.12
  • Published : 2013.09.30
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Abstract

3-(4-Hydroxyphenyl)-propionic acid (HPP) is a bacterial metabolite synthesized and released by an entomopathogenic bacterium Xenorhabdus nematophila K1. In this study, the control efficacy of HPP was tested against Phytophthora blight and anthracnose of red pepper plants. HPP suppressed mycelial growth of Phytophthora blight and anthracnose pathogens. Under natural sunlight condition, HPP maintained the antifungal activity on the diseases for at least twenty five days. The antifungal activity was not decreased even in the condition of soil-water. It was proved that HPP was able to penetrate the roots and travel upward of the red pepper plants. When HPP suspension was applied to soil rhizosphere before transplanting the red pepper seedlings or was regularly sprayed to the foliage of the plants with ten days interval, it resulted in significant reduction of the disease occurrences (Phytophthora blight and anthracnose) without any phytotoxicity. These results suggested that HPP can be developed to a systemic agrochemical against Phytophthora blight and anthracnose of red pepper plants.

3-(4-Hydroxyphenyl)-propionic acid (HPP)는 곤충 병원 세균인 Xenorhabdus nematophila K1의 대사산물이다. 이 물질의 고추의 역병과 탄저병에 대한 방제가능성을 평가하였다. HPP는 역병균과 탄저병균의 균사생장을 현저하게 억제하였다. 이 항균력은 자연 태양광 아래에서 25일이상 유지되었으며, 토양수 내에서도 상실되지 않았다. HPP의 고추 뿌리를 통한 식물체 내 침투 및 상향이행성이 입증되었다. HPP 현탁액을 고추의 근권토양에 관주하고 지상부에 10일 간격으로 살포하였을 때, 약해 발생 없이 역병과 탄저병 발생이 크게 감소되었다. 이러한 결과는 HPP를 고추 역병 및 탄저병 방제를 위한 침투성농약으로 개발할 가능성이 있음을 의미한다.

Keywords

References

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