Developmental transitions in Arabidopsis are regulated by antisense RNAs resulting from bidirectionally transcribed genes

RNA Biology
Katarzyna KrzyczmonikSzymon Swiezewski

Abstract

Transcription terminators are DNA elements located at the 3' end of genes that ensure efficient cleavage of nascent RNA generating the 3' end of mRNA, as well as facilitating disengagement of elongating DNA-dependent RNA polymerase II. Surprisingly, terminators are also a potent source of antisense transcription. We have recently described an Arabidopsis antisense transcript originating from the 3' end of a master regulator of Arabidopsis thaliana seed dormancy DOG1. In this review, we discuss the broader implications of our discovery in light of recent developments in yeast and Arabidopsis. We show that, surprisingly, the key features of terminators that give rise to antisense transcription are preserved between Arabidopsis and yeast, suggesting a conserved mechanism. We also compare our discovery to known antisense-based regulatory mechanisms, highlighting the link between antisense-based gene expression regulation and major developmental transitions in plants.

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Citations

Nov 7, 2018·Nature Plants·Yann PecrixPascal Gamas
Feb 15, 2018·Molecular Systems Biology·Thomas BrownJane Mellor
Apr 12, 2019·BMC Plant Biology·Stefania Del PreteValérie Gaudin

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