Bibliographic Citation
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| Title | In vivo gibberellin biosynthesis in endosperm of Sechium edule Sw. seeds |
| Creator/Author | Ceccarelli, N. ; Lorenzi, R. (Universita degli Studi, Pisa (Italy)) |
| Publication Date | 1990 Jul 01 |
| OSTI Identifier | OSTI ID: 5957546 |
| Other Number(s) | Journal ID: ISSN 0032-0889; CODEN: PLPHA |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Plant Physiology; (USA); Journal Volume: 93:3 |
| Subject | 59 BASIC BIOLOGICAL SCIENCES; GIBBERELLIC ACID; BIOSYNTHESIS; TUBERS; PHYSIOLOGY; CARBON 14 COMPOUNDS; ENDOSPERM; IN VIVO; SEEDS; TRACER TECHNIQUES; BODY; CARBOXYLIC ACIDS; ESTERS; HETEROCYCLIC COMPOUNDS; HYDROXY ACIDS; ISOTOPE APPLICATIONS; LABELLED COMPOUNDS; LACTONES; ORGANIC ACIDS; ORGANIC COMPOUNDS; PLANT TISSUES; SYNTHESIS; TISSUES |
| Description/Abstract | Biosynthesis of gibberellins (GAs) was studied in vivo in endosperms of Sechium edule Sw. Exogenous ent-({sup 14}C)kaurene was metabolized into four major products: GA{sub 12}, GA{sub 4}, GA{sub 7} and 16,17-dihydro-16-hydroxy-GA{sub 15} alcohol glucoside. Other minor metabolites were also observed including ent-kaurenol and ent-kaurenal. Conversion of ent-({sup 14}C)kaurene to ent-karuenol glucoside by endosperm cell-free preparations in the presence of UDPG was observed. However, the finding was not confirmed in in vivo studies and is probably artifactual. Overall evidence coming from the analysis of endogenous GAs and in vitro and in vivo biosynthetic studies are discussed in relation to the possible existence in the Sechium seeds of a different route, along with the known pathway, branching from ent-kaurene or ent-7-{alpha}-hydroxykaurenoic acid and this also leading to biologically active GAs. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 1032-1036 |
| System Entry Date | 2009 Dec 17 |
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