Photoperiod-Dependent Expression of MicroRNA in Drosophila.

Journal article


Pegoraro, M., Fishman, B., Zonato, V., Zouganelis, G., Francis, A., Kyriacou, C. P. and Tauber, E. 2022. Photoperiod-Dependent Expression of MicroRNA in Drosophila. International Journal of Molecular Sciences. 23 (9), pp. 1-14. https://doi.org/10.3390/ijms23094935
AuthorsPegoraro, M., Fishman, B., Zonato, V., Zouganelis, G., Francis, A., Kyriacou, C. P. and Tauber, E.
Abstract

Like many other insects in temperate regions, Drosophila melanogaster exploits the photoperiod shortening that occurs during the autumn as an important cue to trigger a seasonal response. Flies survive the winter by entering a state of reproductive arrest (diapause), which drives the relocation of resources from reproduction to survival. Here, we profiled the expression of microRNA (miRNA) in long and short photoperiods and identified seven differentially expressed miRNAs (dme-mir-2b, dme-mir-11, dme-mir-34, dme-mir-274, dme-mir-184, dme-mir-184*, and dme-mir-285). Misexpression of dme-mir-2b, dme-mir-184, and dme-mir-274 in pigment-dispersing, factor-expressing neurons largely disrupted the normal photoperiodic response, suggesting that these miRNAs play functional roles in photoperiodic timing. We also analyzed the targets of photoperiodic miRNA by both computational predication and by Argonaute-1-mediated immunoprecipitation of long- and short-day RNA samples. Together with global transcriptome profiling, our results expand existing data on other Drosophila species, identifying genes and pathways that are differentially regulated in different photoperiods and reproductive status. Our data suggest that post-transcriptional regulation by miRNA is an important facet of photoperiodic timing.

KeywordsmicroRNA; gene expression; Photoperiod; Drosophila; genetics
Year2022
JournalInternational Journal of Molecular Sciences
Journal citation23 (9), pp. 1-14
PublisherMDPI
ISSN1422-0067
Digital Object Identifier (DOI)https://doi.org/10.3390/ijms23094935
Web address (URL)https://www.mdpi.com/1422-0067/23/9/4935
Publisher's version
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Open
Output statusPublished
Publication dates
Online29 Apr 2022
Publication process dates
Accepted26 Apr 2022
Deposited16 Sep 2022
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