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Biosynthesis of the gibberellin plant hormones

Biosynthesis of the gibberellin plant hormones Jake MacMillan IACR-Long Ashton Research Station, Department of Agricultural Sciences, University of Bristol, Long Ashton, Bristol, UK BS18 9AF Covering: Up to September 1996 12 20 '1- Previous review: J. E. Graebe, Ann. Rev. Plant Physiol., 1987, 38,419 1 Introduction 2 Overview 3 Stage A: mevalonic acid to ent-kaur-16-ene C20-Gibberellins, e.g. GA12 ent-gibberell-l6-ene-7,19-dioic acid 3.1 Metabolic steps 3.2 Stereochemistry 3.3 Enzymology 4 Stage B: ent-kaur-16-ene to GA,,-aldehyde 4.1 Metabolic steps 4.2 S tereoc hemis try 4.3 Enzymology Stage C: GA,,-aldehyde to C20- and C,,-GAs C19-Gibberellins, e.g. GAg 5.1 Metabolic steps ent-20-norgibberelI-16-ene-7,19-dioic acid 19,lO-lactone 5.1.1 Higher plants: in vitro 5.1.2 Higher plants: in vivo Fig. 1 Gibberellin structures and nomenclature 5.1.3 Higher plants: other pathways 5.1.3.1 Early 2P-hydroxylation 5.1.3.2 12a- and 12P-Hydroxylation GA,, are provided in an overview6 of the chemistry of the 5.1.3.3 15P-Hydroxylation GAS. The structures of the more recent GAS are shown where 5.1.3.4 9,ll-Didehydro- and 9,15-cyclo-GAs appropriate. 5.1.4 Fungal cultures Because of the biological importance of the GAS, there has 5.1.4.1 Gibberella fujikuroi been great interest in their biosynthesis and there are many 5.1.4.2 Other fungi reviews, for example, refs. 3, 7 and 8. Since the most recent 5.2 Enzymology review8 on the biosynthetic pathways, many http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Natural Product Reports Royal Society of Chemistry

Biosynthesis of the gibberellin plant hormones

MacMillan, Jake
Royal Society of Chemistry — Jan 1, 1997
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Abstract

Jake MacMillan IACR-Long Ashton Research Station, Department of Agricultural Sciences, University of Bristol, Long Ashton, Bristol, UK BS18 9AF Covering: Up to September 1996 12 20 '1- Previous review: J. E. Graebe, Ann. Rev. Plant Physiol., 1987, 38,419 1 Introduction 2 Overview 3 Stage A: mevalonic acid to ent-kaur-16-ene C20-Gibberellins, e.g. GA12 ent-gibberell-l6-ene-7,19-dioic acid 3.1 Metabolic steps 3.2 Stereochemistry 3.3 Enzymology 4 Stage B: ent-kaur-16-ene to GA,,-aldehyde 4.1 Metabolic steps 4.2 S tereoc hemis try 4.3 Enzymology Stage C: GA,,-aldehyde to C20- and C,,-GAs C19-Gibberellins, e.g. GAg 5.1 Metabolic steps ent-20-norgibberelI-16-ene-7,19-dioic acid 19,lO-lactone 5.1.1 Higher plants: in vitro 5.1.2 Higher plants: in vivo Fig. 1 Gibberellin structures and nomenclature 5.1.3 Higher plants: other pathways 5.1.3.1 Early 2P-hydroxylation 5.1.3.2 12a- and 12P-Hydroxylation GA,, are provided in an overview6 of the chemistry of the 5.1.3.3 15P-Hydroxylation GAS. The structures of the more recent GAS are shown where 5.1.3.4 9,ll-Didehydro- and 9,15-cyclo-GAs appropriate. 5.1.4 Fungal cultures Because of the biological importance of the GAS, there has 5.1.4.1 Gibberella fujikuroi been great interest in their biosynthesis and there are many 5.1.4.2 Other fungi reviews, for example, refs. 3, 7 and 8. Since the most recent 5.2 Enzymology review8 on the biosynthetic pathways, many

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Natural Product Reports – Royal Society of Chemistry

Published: Jan 1, 1997

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