Daiane Szczerbowski

Biosynthesis and Site of Production of Sex Pheromone Components of the Cerambycid Beetle, Hedypathes betulinus

We determined the site of pheromone production tissues and a partial route for the biosynthesis of the sex pheromone in Hedypathes betulinus (Coleoptera: Cerambycidae: Lamiinae), Brazil’s main green maté pest. Pheromone was found predominantly in the prothorax of males, suggesting that this is the region of production of pheromones in this insect. Scanning electron microscopy revealed small pores that may be associated with pheromone release in males; these pores also were observed in females. A deuterium-labeled putative precursor (geranyl acetone-D5) of the sex pheromone of H. betulinus was synthesized. When applied to the prothorax of males, label from the precursor was incorporated into the pheromone components, confirming that pheromone production occurs in the prothorax and that the pheromone components are biosynthesized from geranyl acetone.

Quinina: 470 anos de história, controvérsias e desenvolvimento

After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.

Quinine: 470 years of history, controversy and science development

After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.

Quinine: 470 years of history, controversy and development.

After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchon contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain synthetic quinine, discovered the mauveina, a molecule that changed the world. The synthesis of quinine was also the subject of a bitter controversy among two excellent scientists of the 20th century. During centuries, quinine was the only hope against malaria disease and its exploration almost extinguished the Cinchona tree.