Journal of Plant Biology
- 제33권2호
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- Pages.87-96
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- 1990
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- 1226-9239(pISSN)
담배 현탁배양 세포에 있어 Polyamine 과 Ethylene 생합성시 중간산물로서 S-Adenosylmethionine의 역할
Role of S-Adenosylemthionine as an Intermediate in Relation between Polyamine and Ethylene Biosynthesis in Suspension-Cultured Tobacco Cells
초록
The role of S-adenosylmethionine (SAM) as an intermediate in interrelation between polyamine and ethylene biosynthesis was studied in suspension cultures of Nicotiana tabacum L. Exogenous SAM stimulated the polyamine and ethylene biosynthesis in 4 day-cultured cells, which were in active cell divisions, and 10 day cultured cells, which went on with active cell elongation and senescence. SAM-induced ethylene production was more effective in 10 day-cultured cells than in 4 day-cultured cells, but SAM-induced polyamine biosynthesis was more effective in 4 day-cultured cells than in 10 day-cultured cells. Polyamine contents were increased by the blockage of ethylene biosynthetic pathway in the conversion of SAM to ethylene via 1-aminocyclopropane-1-carboxylinc acid (ACC) with aminooxyacetic acid (AOA). Also, ethylene production was increased by the inhibitors of polyamine biosynthesis such as methylglyoxal bis-(guanylhydrazone) (MGBG), dicyclohexylamine (DCHA),
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