Activities of Sulfhydryl-Related and PhenylpropanoidSynthesizing Enzymes during the Germination of Arabidopsis thaliana Seeds

• 영문명: Activities of Sulfhydryl-Related and PhenylpropanoidSynthesizing Enzymes during the Germination of Arabidopsis thaliana Seeds
• 발행기관: 강원대학교 기초과학연구소
• 저자명: Park Keum-Nam Jae-Hoon Sa Byung-Don Han Eun-Hee Park Chang-Jin Lim
• 간행물 정보: 『기초과학연구』제10집, 135~142쪽, 전체 8쪽
• 주제분류: 자연과학 > 자연과학일반
• 파일형태: PDF
• 발행일자: 1999.12.01

영문 초록

Seeds of Arabidopsis thaliana were sowed in a Murashige and Skoog's medium and incubated in a tissue culture chamber at 26.2.C. They appeared to germinate at 60-72 hours after sowing. We measured the time-course activities of sulfhydryl-related enzymes such as thioredoxin, thiol-transferase (gIutaredoxin), thioredoxin reductase, and glutathione reductase. The activities of two enzymes, phenylalanine ammonia-lyase and tyrosine ammonia-lyase, which are involved in phenylpropanoid synthesis, were also measured and compared. Phenylalanine ammonia-lyase activity increased from 48 hours after sowing, whereas tyrosine ammonia-lyase activity increased transiently at the early stage and decreased slightly afterwards. Thioredoxin activity gradually decreased during the germination process. However, thioltransferase activity increased drastically from 60 hours after sowing. Thioredoxin reductase and glutathione reducatase increased rapidly from 36 hours after sowing. Thioredoxin activity was found to be relatively high in the dormant seeds. Keywords: Arabidopsis tha/iana, germination, glutathione reductase, phenyalanine ammonia-lyase, thioltransferase, thioredoxin

목차

INTRODUCTION

MATERIALS AND METHODS

RESULTS AND DISCUSSION

ACKNOWLEDGEMENTS

LITERATURE CITED