Hormones and Sex-Specific Transcription Factors Jointly Control Yolk Protein Synthesis in Musca domestica
Figure 5
Model for YP regulation. Synthesis of YP in the fat body is regulated by a combination of different nonautonomous (green and red boxes) and autonomous (blue boxes) factors. The relative contribution of each depends on the mode of oogenic development. In fly species with continuous egg production, for example, Drosophila, competence factors play a more relevant role than synchronization factors. While in fly species with synchronized production of eggs, for example, Musca, hormones such as ecdysteroids (ECD), which control YP synthesis cyclically, have a more significant contribution than the autonomous sex-specific regulators.
