본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Accumulation of diferulic acid during the hypersensitive response of oat leaves toPuccinia coronataf.sp.avenaeand its role in the resistance of oat tissues to cell wall degrading enzymes

Ikegawa, T. ; Mayama, S. ; Nakayashiki, H. ; Kato, H. ;
  • 초록  

    Abstract The relationship between diferulic acid formation and locally induced resistance was investigated in the interactions of two physiological races of Puccinia coronata f.sp. avenae with Shokan 1 oat. Diferulic acid was detected in the hemicellulosic fraction extracted with oxalic acid from the cell wall. The amount of ferulic acid bound in the cell wall matrix polysaccharides did not vary in uninoculated and inoculated primary leaves of oats during the time course of the experiment. In contrast, the formation of diferulic acid bound to wall polysaccharides became significantly higher in the incompatible than the compatible interaction at approx. 36h after inoculation. The timing of increased formation of diferulic acid was correlated with the accumulation of avenalumins and inhibition of protoplast liberation from infected primary leaves. Activities of soluble, and of ionically- and covalently-bound cell wall peroxidases from uninoculated and inoculated leaves were measured. Ionically-bound cell wall peroxidase activity increased in the incompatible interactions at about 36h after inoculation. This was the same time that increased levels of diferulic acids were observed. This may indicate that the cross-linking of matrix polysaccharides by ferulic acids bound in cell walls is caused by a coupling reaction initiated by ionically-bound cell wall peroxidases. It is postulated that the diferulic acid formation occurs in oat cell walls at the infection sites in incompatible interactions and may contribure to locally induced resistance in oats by providing a barrier to pathogen ingress.


  • 원문보기

    원문보기
    무료다운로드 유료다운로드
    • 무료 원문 정보가 존재하지 않습니다.

    유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역