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    The development of insect wings is a complex process controlled by a series of genes, whereas the mechanism of wing development of orthoptera insects is less frequently reported. In the present study, a BTB domain-containing protein 6 (LmBTBD6) gene was identified from Locusta migratoria. Its encoded protein belongs to the BTB-BACK-PHR subfamily, and is highly conserved among insect species. LmBTBD6 was mainly expressed in the wing pads and showed high expression on day 7 of fifth-instar nymphs. LmBTBD6 responded to induction by 20-Hydroxyecdysone (20E) in vivo, and its expression was significantly suppressed after knocking down the ecdysone receptor gene LmEcR and nuclear receptor gene LmHR39. Deficiency of LmBTBD6 did not show visible phenotype in the wing pads transition from nymph to nymph of L. migratoria, but caused wing defects in the transition from nymph to adult. After silencing of LmBTBD6, the transcription of wing development-related genes (LmSal411, LmSal468, and LmHth) and the wing-specific cuticle protein genes (LmACP7 and LmACP8) of L. migratoria were significantly suppressed. Thus, LmBTBD6 that regulated by the LmEcR-LmHR39-mediated 20E signaling pathway is involved in wing development during the nymph to adult transition by regulating the expression of wing development-related genes and wing-specific cuticle protein genes. Copyright © 2019 Elsevier B.V. All rights reserved.


    Xiaoming Zhao, Jing Zhang, Yang Yang, Weimin Liu, Jianzhen Zhang. BTB domain-containing protein 6 is involved in the development of locust wings during the nymph to adult transition. International journal of biological macromolecules. 2020 May 01;150:965-973

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    PMID: 31758989

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