한국초지조사료학회지 (Journal of The Korean Society of Grassland and Forage Science)

  • 제27권1호
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  • Pages.37-44
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  • 2007
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  • 2287-5824(pISSN)
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  • 2287-5832(eISSN)
한국초지조사료학회 (The Korean Society of Grassland and Forage Science)
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라지 팻치에 감염된 잔디에서 프롤린과 암모니아의 축적

Proline and Ammonia Accumulation in the Zoysiagrass Infected with Large Patch

  • 발행 : 2007.03.30
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초록

병원균 감염에 의한 식물체내 프롤린과 암모니아의 농도 변화와 그것의 스트레스 생리학적 의미를 구명하기 위하여 Rhizoctonia spp.를 처리 후 라지 펫치에 감염된 잔디의 생육 및 관련 화학적 성분을 감염이 되지 않은 대조구와 비교하였다. 라지 펫치에 감염된 잔디의 뿌리의 건사율은 대조구에 비해 약 30% 증가하였다. 가용성 단백질 농도는 병원균 처리후 6일째 잎의 경우를 제외하고는 라지 펫치 감염에 따른 유의적인 영향이 없었다. 암모니아 농도 역시 라지 펫치에 감염된 잎과 줄기에서 공히 유의적으로 증가하였다. 프롤린 농도는 잎과 뿌리에서 대조구에 비해 각각 3.4 및 4.5배 증가하였다. 이러한 결과들은 잔디에 있어 병원균 감염에 따른 프롤린의 축적은 스트레스 강도를 나타내는 민감한 표지물질로서 의미가 있음을 제시한다.

To investigate the response of proline and ammonia to pathogen infection, plant growth and relevant chemical component were examined in large patch-infected or healthy (control) zoysiagrass during 6 days after treatment. Pathogen-infection increased root mortality by 30% compared to control. Soluble protein was not significantly affected by pathogen-infection except in the leaf at day 6. Ammonia concentration also increased significantly in both leaves and roots of pathogen-infected plants. Proline concentration in leaves and roots increased to 3.4- and 4.5-fold, respectively, compared to those of control at day 6. These results suggest that proline accumulation may be a sensitive biochemical indicator representing the stress intensity caused by pathogen infection in zoysiagrass.

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