Ogita et al. constructed transgenic coffee plants in which expression of the gene encoding theobromine synthase (CaMXMT1), an enzyme involved in caffeine synthesis, was repressed by RNAi. They ...

The parallel evolution of caffeine synthesis in yerba mate and coffee led scientists to suspect it plays a crucial role in plant survival, potentially functioning as a defence mechanism.

The parallel evolution of caffeine synthesis in yerba mate and coffee led scientists to suspect it plays a crucial role in plant survival, potentially functioning as a defence mechanism.