Pre-mRNA splicing repression triggers abiotic stress signaling in plants

Yu Ling, Sahar Alshareef, Haroon Butt, Jorge Lozano-Juste, Lixin Li, Aya A. Galal, Ahmed Moustafa, Afaque Ahmad Imtiyaz Momin, Manal Tashkandi, Dale N. Richardson, Hiroaki Fujii, Stefan T. Arold, Pedro L. Rodriguez, Paula Duque, Magdy M. Mahfouz

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Alternative splicing (AS) of precursor RNAs enhances transcriptome plasticity and proteome diversity in response to diverse growth and stress cues. Recent work has shown that AS is pervasive across plant species, with more than 60% of intron-containing genes producing different isoforms. Mammalian cell-based assays have discovered various inhibitors of AS. Here, we show that the macrolide pladienolide B (PB) inhibits constitutive splicing and AS in plants. Also, our RNA sequencing (RNA-seq) data revealed that PB mimics abiotic stress signals including salt, drought and abscisic acid (ABA). PB activates the abiotic stress- and ABA-responsive reporters RD29A
Original languageEnglish (US)
Pages (from-to)291-309
Number of pages19
JournalThe Plant Journal
Volume89
Issue number2
DOIs
StatePublished - Jan 17 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We wish to thank members of the Laboratory for Genome Engineering at King Abdullah University of Science and Technology for helpful discussions and comments on the manuscript. We wish to thank Moussa Benhamed for helpful discussions and suggestions and for providing key materials. We wish to thank Sean Cutler for providing Arabidopsis seeds of MAKPKKK18-uidA. This study was supported by King Abdullah University of Science and Technology. Work in PR's laboratory was funded by grant BIO2014-52537-R from MINECO. Work in PD's laboratory is funded by grant PTDC/BIA-PLA/1084/2014 from FCT. The authors declare no conflicts of interest.

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