Abstract:
:Natural genetic variation affects circadian rhythms across the evolutionary tree, but the underlying molecular mechanisms are poorly understood. We investigated population-level, molecular circadian clock variation by generating >700 tissue-specific transcriptomes of Drosophila melanogaster (w1118 ) and 141 Drosophila Genetic Reference Panel (DGRP) lines. This comprehensive circadian gene expression atlas contains >1700 cycling genes including previously unknown central circadian clock components and tissue-specific regulators. Furthermore, >30% of DGRP lines exhibited aberrant circadian gene expression, revealing abundant genetic variation-mediated, intertissue circadian expression desynchrony. Genetic analysis of one line with the strongest deviating circadian expression uncovered a novel cry mutation that, as shown by protein structural modeling and brain immunohistochemistry, disrupts the light-driven flavin adenine dinucleotide cofactor photoreduction, providing in vivo support for the importance of this conserved photoentrainment mechanism. Together, our study revealed pervasive tissue-specific circadian expression variation with genetic variants acting upon tissue-specific regulatory networks to generate local gene expression oscillations.
journal_name
Sci Advjournal_title
Science advancesauthors
Litovchenko M,Meireles-Filho ACA,Frochaux MV,Bevers RPJ,Prunotto A,Anduaga AM,Hollis B,Gardeux V,Braman VS,Russeil JMC,Kadener S,Dal Peraro M,Deplancke Bdoi
10.1126/sciadv.abc3781subject
Has Abstractpub_date
2021-01-29 00:00:00issue
5issn
2375-2548pii
7/5/eabc3781journal_volume
7pub_type
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