Broad-complex functions in postembryonic development of the cockroach Blattella germanica shed new light on the evolution of insect metamorphosis
[Background] Insect metamorphosis proceeds in two modes: hemimetaboly, gradual change along the life cycle; and holometaboly, abrupt change from larvae to adult mediated by a pupal stage. Both are regulated by 20-hydroxyecdysone (20E), which promotes molts, and juvenile hormone (JH), which represses adult morphogenesis. Expression of Broad-complex (BR-C) is induced by 20E and modulated by JH. In holometabolous species, like Drosophila melanogaster, BR-C expression is inhibited by JH in young larvae and enhanced in mature larvae, when JH declines and BR-C expression specifies the pupal stage.
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| Main Authors: | , , |
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| Format: | artículo biblioteca |
| Published: |
Elsevier
2013-01
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| Online Access: | http://hdl.handle.net/10261/111718 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100001868 |
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