Osiris gene family defines the cuticle nano-patterns of Drosophila
Sun, Z.; Inagaki, S.; Miyoshi, K.; Saito, K.; Hayashi, S.
Show abstract
Nanostructures of pores and protrusions in the insect cuticle modify molecular permeability and surface wetting and help insects sense a variety of environmental cues. The cellular mechanism specifying cuticle nanostructures is poorly understood. Here, we show that insect-specific Osiris family genes are expressed in various cuticle-secreting cells in the Drosophila head in the early stage of cuticle secretion and collectively cover nearly the entire surface of the head epidermis. We show that each sense organ cell with various cuticular nanostructures expresses a unique combination of Osiris genes. Osiris gene mutations caused various cuticle defects in the corneal nipples of the eye and pores of the chemosensory sensilla. Osiris genes provide an entry point for investigating cuticle nanopatterning in insects.
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