The biosynthesis of a C19-gibberellin from mevalonic acid in a cell-free system from a higher plant

Abstract
Incubation of a cell-free system from immature seeds of Cucurbita maxima Duch. with [14C]GA12-aldehyde derived from [14C]mevalonic acid in the same system yielded the C19-gibberellin, [14C]GA4, in addition to the C20-gibberellins, [14C]GA37, [14C]GA13 and [14C]GA43. (GA-gibberellin).