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Geranyl diphosphate synthase is required for biosynthesis of gibberellins
Author(s) -
Van Schie Chris C. N.,
Ament Kai,
Schmidt Axel,
Lange Theo,
Haring Michel A.,
Schuurink Robert C.
Publication year - 2007
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1111/j.1365-313x.2007.03273.x
Subject(s) - biosynthesis , gibberellin , lycopersicon , gibberellic acid , atp synthase , biochemistry , carotenoid , biology , gene silencing , chlorophyll , chemistry , gene , botany , germination
Summary Geranyl diphosphate synthase (GPS) is generally considered to be responsible for the biosynthesis of monoterpene precursors only. However, reduction of LeGPS expression in tomato ( Lycopersicon esculentum ) by virus‐induced gene silencing resulted in severely dwarfed plants. Further analysis of these dwarfed plants revealed a decreased gibberellin content, whereas carotenoid and chlorophyll levels were unaltered. Accordingly, the phenotype could be rescued by application of gibberellic acid. The dwarfed phenotype was also obtained in Arabidopsis thaliana plants transformed with RNAi constructs of AtGPS . These results link geranyl diphosphate (GPP) to the gibberellin biosynthesis pathway. They also demand a re‐evaluation of the role of GPS in precursor synthesis for other di‐, tri‐, tetra‐ and/or polyterpenes and their derivatives.