Segmental expression of two ecdysone pathway genes during embryogenesis of hemimetabolous insects.

ABSTRACT: Signaling networks are redeployed across different developmental times and places to generate phenotypic diversity from a limited genetic toolkit. Hormone signaling networks in particular have well-studied roles in multiple developmental processes. In insects, the ecdysone pathway controls critical events in late embryogenesis and throughout post-embryonic development. While this pathway has not been shown to function in the earliest stage of embryonic development in the model insect Drosophila melanogaster, one component of the network, the nuclear receptor E75A, is necessary for proper segment generation in the milkweed bug Oncopeltus fasciatus. Published expression data from several other species suggests possible conservation of this role across hundreds of millions of years of insect

SUBMITTER: Wexler J 

PROVIDER: S-EPMC10228571 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature