Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Terpenoid Biochemistry and Molecular Genetics in Conifers

PHYLOGENY OF THE CONIFER TPS-d FAMILY IN COMPARISON WITH ANGIOSPERM TPS [Pg.36]

Ag f-a-bisabolene syn Pa isopimara-7,15-diene syn Pa levopimaradiene/abietadiene syn Ag abietadiene syn Gb levopimatadiene syn [Pg.38]

ASPECTS OF THE CHEMICAL ECOLOGY OF CONIFER TERPENOID DEFENSES [Pg.39]

Terpenes are known to play important ecological roles not only in the defense of the tree, but also in bark beetle chemical ecology. Two chapters in this volume (see chapters by Raffa, et al, and Tittiger, et al.) review aspects of terpenoids as chemicals in conifer-bark beetle interactions and isoprenoid formation in bark beetle chemical ecology. While some species of bark beetles may be able to produce monoterpene pheromones de novo, bark beetles can also use host-derived monoterpenes as precursors to their own sex and aggregation pheromones. Bark beetle monoterpene pheromones are often used in a stereospecific manner such that often only one enantiomer is able to serve as a sex or aggregation pheromone. Since both enantiomeric host-derived monoterpene precursors are accepted and chemically modified by the beetle, the exact monoterpene enantiomeric mixture of conifer resin is important to both the beetle s ability to produce the correct pheromone and to the trees ability to escape an attack.  [Pg.40]

Conifer chemical ecology includes many other herbivores, predators and pathogens, aside from the bark beetles, weevils, sawflies, or budworms, and in these diverse interactions, terpenoid volatile emissions as well as accumulated oleoresin terpenes are likely to play many important roles in signaling and defense. [Pg.41]


See other pages where Terpenoid Biochemistry and Molecular Genetics in Conifers is mentioned: [Pg.31]   


SEARCH



Biochemistry/molecular

Genetics molecular

In Biochemistry

Terpenoid

Terpenoides

Terpenoids

© 2024 chempedia.info