Site of Monoterpene Biosynthesis in Majorana hortensis Leaves

Regulation of monoterpene accumulation in leaves of peppermint.

Plants synthesize numerous classes of natural products that accumulate during development and are thought to function as constitutive defenses against herbivores and pathogens. However, little information is available about how the levels of such defenses are regulated. We measured the accumulation of monoterpenes, a model group of constitutive defenses, in peppermint (Mentha x piperita L.) lea...

PLANT VOLATILES. Biosynthesis of monoterpene scent compounds in roses.

The scent of roses (Rosa x hybrida) is composed of hundreds of volatile molecules. Monoterpenes represent up to 70% percent of the scent content in some cultivars, such as the Papa Meilland rose. Monoterpene biosynthesis in plants relies on plastid-localized terpene synthases. Combining transcriptomic and genetic approaches, we show that the Nudix hydrolase RhNUDX1, localized in the cytoplasm, ...

Aza-tryptamine substrates in monoterpene indole alkaloid biosynthesis.

Biosynthetic pathways can be hijacked to yield novel compounds by introduction of novel starting materials. Here we have altered tryptamine, which serves as the starting substrate for a variety of alkaloid biosynthetic pathways, by replacing the indole with one of four aza-indole isomers. We show that two aza-tryptamine substrates can be successfully incorporated into the products of the monote...

Cell-free studies of monoterpene and sesquiterpene biosynthesis.

Regulation of biosynthesis Plastoquinone, ph ylloquinone and a-tocopherol are present in much lower amounts in etiolated tissue compared with green tissue, and the increase in these compounds on illumination is concomitant with the formation of the thylakoid membrane. This is perhaps the major regulatory level in biosynthesis of chloroplastidic quinones and chromanols. Evidence for lightdepende...

Chemistry and biology of monoterpene indole alkaloid biosynthesis.