5 resultat
Biosynthesis of the hydroxylated labdane diterpene, cis-abienol, 9 alpha H-[(12Z)-labda-12,14-dien-8 alpha-ol] from geranylgeranyl pyrophosphate was observed in cell-free extracts prepared from trichome-bearing tissues of the experimental tobacco, Nicotiana tabacum L. c.v. T.I. 1068. Synthetic
Leaves of tobacco (Nicotiana tabacum) are covered with glandular trichomes that produce sucrose esters and diterpenoids in varying quantities, depending on cultivar type. The bicyclic diterpene Z-abienol is the major labdanoid present in some oriental tobacco cultivars, where it constitutes a
cis-Abienol and sucrose esters are Nicotiana tabacum leaf surface components that likely influence plant resistance to pests. Their breakdown products also contribute to flavor and aroma characteristics of certain tobacco types. Mapping of genes involved in the biosynthesis of these compounds could
The structures of four stereoisomeric 8,12x1-expoxylabd-14-en-13x1-ols** obtained from Greek tobacco were determinedby spectroscopic means and by conversion to 12-norambreinolide. Plausible routes for the formation of the new labdanols and related tobacco constituents from a common precursor,
Functional gene clusters, containing two or more genes encoding different enzymes for the same pathway, are sometimes observed in plant genomes, most often when the genes specify the synthesis of specialized defensive metabolites. Here, we show that a cluster of genes in tomato (Solanum