Gibberellin-regulated phosphatidylcholine biosynthesis in suspension cultures of Apium graveolens

被引：0
|
作者：
Andrew Burgess
Carole Rolph
机构：
[1] University of Central Lancashire,Department of Applied Biology
来源：
Plant Growth Regulation | 2001年 / 34卷
关键词：
CDP-base pathway; Gibberellic acid; Methyltransferase pathway; Phosphatidylcholine; Signal transduction;
D O I：
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中图分类号：
学科分类号：
摘要：
Recent studies with mammalian tissues have shown thatphosphatidylcholine (PC) plays a key role in signal transduction mechanismsinvolved in cell proliferation and differentiation. This investigation attemptsto show if PC has a role in gibberellin-stimulated plant signal transduction.With respect to cell differentiation, GA3-treatment caused an overallincrease in the elongation ratio exhibited by the cells. The effects ofGA3 on the biosynthetic route of PC were investigated. Carbon fluxthrough the CDP-base pathway was significantly reduced upon GA3treatment. Whereas, radiolabelling studies with tritiated methionine showed aGA3 concentration-dependent increase in the flux of intermediatesthrough the methyltransferase pathway indicating a possible link betweenmethyltransferase-derived PC and cell differentiation.
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页码：113 / 117
页数：4
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