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Gibberellin modulation of phosphatidyl-choline turnover in wheat aleurone tissue |
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| Authors: | D. N. Vakharia C. A. Brearley M. C. Wilkinson T. Galliard D. L. Laidman |
| Affiliation: | (1) Department of Biochemistry and Soil Science, University College of North Wales, LL57 2UW Bangor, Gwynedd, UK;(2) RHM Research and Engineering, The Lord Rank Research Centre, Lincoln Road, HP12 3QR High Wycombe, Bucks, UK |
| Abstract: | Phosphatidyl choline (PC) is synthesised in wheat (Triticum aestivum L. cv. Flanders) aleurone tissue during early germination when new endomembranes are being formed. Although gibberellic acid does not ostensibly affect PC levels, it inhibits the incorporation of choline and differentially and specifically modulates the turnover of the N-methyl and methylene carbons of the choline headgroup of PC. Gibberellic acid has no effect on turnover of the phosphate moiety of either PC or the other major phosphatides. The possible biological importance of the findings is discussed.Abbreviations ER endoplasmic reticulum - GA gibberellin - GA3 gibberellic acid - PA phosphatidic acid - PC phosphatidyl choline - PE phosphatidyl ethanolamine - PG phosphatidyl glycerol - PI phosphatidyl inositol - t1/2 half-life |
| Keywords: | Aleurone Germination (seed) Gibberellin and phospholipid turnover Membranes Phospholipid Triticum (gibberellin and phospholipids) |
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