Changes in Amino Acid Content in Infected Leaves of Spring Barley Plants Resistant to Powdery Mildew at Adult- Plant Stage

흰가루병에 성체식물저항성을 지닌 봄보리의 감염잎에서 아미노산함량의 변화

  • Hwang Byung Kook (Department of Plant Protection, College of Agriculture, Korea University)
  • 황병국 (고려대학교 농과대학 식물보호학과)
  • Published : 1985.09.01

Abstract

Ethanol-soluble amino acids in healthy and powdery mildew-infected leaves of the susceptible cultivar Peruvian and the adult-plant-resistant cultivar Asse of spring barley were quantitatively analysed. At I day after inoculation, the levels of amino acids in the infected first leaves of the two cultivars were similar to those of comparable healthy controls. During sporulation, increases in amino acids were more pronounced in Peruvian than those in Asse. The changes in amino acid content in the infected first and fifth leaves were closely related to the number of colonies per leaf. The susceptible cultivar Peruvian showed higher amounts of amino acids in infected first and fifth leaves at all infection intensitives than did Asse.

흰가루병에 대하여 감수성인 봄보리품종 Peruvian과 성체식물 저상성품종 Asse의 건전잎과 감염잎에 함유되어 있는 에탄올가용성 아미노산을 분석하였다. 접종1일 후에는 이들 두 품종의 제1엽내의 아미노산 함량은 건전잎과 비슷한 수준이었다. 포자형성 동안 Asse보다 Peruvian에서 아미노산의 증가에 뚜렷하였다. 감염된 제1엽, 제5엽에서 아미노산 함량은 엽당 병반수가 많을수록 증가하였고, 감수성 품종 Peruvian의 감염잎이 Asse보다 아미노산 함량이 더 높았다.

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