Metabolism of ent-kaurenol-[17-14C], ent-kaurenal-[17-14C] and ent-kaurenoic acid-[17-14C] by germinating Hordeum distichon grains |
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Authors: | George JP Murphy Dennis E Briggs |
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Institution: | Department of Biochemistry, University of Birmingham, P.O. Box 363, Birmingham B15 2TT England |
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Abstract: | Subcellular fractions from germinated barley embryos, chloroplast preparations and whole germinating barley grains are able to carry out the conversions ent-kaurenol → ent-kaurenal → ent-kaurenoic acid → ent-hydroxykaurenoic acid, the initial steps of the biosynthetic pathway to gibberellins. Whole grains, and chloroplasts to a slight extent, incorporate radioactivity from ent-kaurenol-17-14C] and ent-kaurenoic acid-17-14C] into materials with similar but distinct properties from the gibberellins GA1, GA3, GA4 and GA7. |
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Keywords: | Gramineae barley metabolism gibberellins |
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