Effect of gibberellic acid on sterol production in Corylus avellana seeds |
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Authors: | Peter R. Shewry Allan K. Stobart |
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Affiliation: | Plant Cell Metabolism Laboratory, Department of Botany, University of Bristol, Bristol BS8 IUG U.S.A. |
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Abstract: | Gibberellic acid-induced germination of hazel seeds was accompanied by little change in the sterol content of the cotyledons. Dormant and germinating cotyledons rapidly incorporated [2-14C]MVA into squalene which was slowly converted to sterols. Gibberellin treatment induced an increase in the incorporation of [2-14C]MVA into cotyledon esterified sterols. An increase in free sterols occurred in the germinating embryonic axes, with increased relative amounts of stigmasterol and campesterol in the free 4-desmethylsterols. Germination was accompanied by increased incorporation of [2-14C]MVA into free and esterified sterols in the embryonic axes. |
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Keywords: | Betulaceae hazel gibberellic acid germination sterols Author to whom correspondence should be addressed |
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