Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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The Influence of UV Irradiation on Stilbene Contents and Gray Mold Incidence in Grapevine Leaves

자외선 조사가 포도잎의 Stilbene 함량 및 잿빛곰팡이병 발생에 미치는 영향

  • 최성진 (대구가톨릭대학교 생명공학과)
  • Received : 2012.05.09
  • Accepted : 2012.07.11
  • Published : 2012.10.31
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Abstract

In order to confirm the possibility of UV utilization as a means for disease protection in grapevine the stilbene contents and the disease incidence in UV irradiated leaves were investigated. UV irradiation significantly increased the contents of resveratrol, piceatannol and piceid, in them, resveratrol and piceid showed in vitro inhibition of spore germination and mycelium growth of Botrytis cinerea. The accumulation of both the stilbenes in UV irradiated leaves seems to be enough to inhibit the B. cinerea growth, since the formation of necrotic spot on the leaves was considerably inhibited when they were inoculated with the conidial spores of B. cinerea. However the stilbenes were accumulated only in the leaves exposed directly to UV showing a limited translocation ability of the compounds. Thus it would be necessary to develop a method to evenly irradiate the entire crown of plant with UV in order to expect to protect them from disease by UV irradiation.

포도 잎에서 병 발생을 경감하기 위한 수단으로 자외선의 활용 가능성을 확인하기 위하여, 자외선을 조사한 포도 잎에서 stilbene 화합물의 함량 변화와 Botrytis cinerea 생장의 차이를 조사하였다. 자외선의 조사는 포도 잎에서 resveratrol, piceatannol, piceid의 함량을 크게 증가시켰으며, 특히 resveratrol과 piceid는 B. cinerea의 포자 발아와 균사 생장을 억제하는 효과를 보였다. 자외선 조사에 의해 포도 잎에 축적되는 resveratrol과 piceid의 농도는 B. cinerea의 생장을 억제하기에 충분할 것으로 생각되며 자외선을 조사한 포도 잎에 B. cinerea의 포자를 접종하였을 때 괴사 반점의 형성이 억제되는 것으로 나타났다. 그러나 stilbene 화합물은 체내 이동성이 거의 없고 자외선에 직접 노출된 잎에서만 함량이 증가하므로 병 발생 경감의 수단으로 자외선을 활용하기 위해서는 수관 전체에 자외선을 균일하게 조사하는 방법의 도입이 필요해 보인다.

Keywords

References

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