Journal
PLANT CELL
Volume 25, Issue 11, Pages 4391-4404Publisher
AMER SOC PLANT BIOLOGISTS
DOI: 10.1105/tpc.113.114959
Keywords
-
Funding
- Biotechnology and Biological Science Research Council [BB/F005296/2, BB/F005237/1, BB/F005318/1]
- Biotechnology and Biological Sciences Research Council [BB/K018078/1, BB/F005237/1, BB/F005296/1, BB/F005318/1, BB/F005296/2] Funding Source: researchfish
- BBSRC [BB/F005296/2, BB/F005296/1, BB/F005237/1, BB/F005318/1, BB/K018078/1] Funding Source: UKRI
Ask authors/readers for more resources
Cold acclimation has been shown to be attenuated by the degradation of the INDUCER OF CBF EXPRESSION1 protein by the E3 ubiquitin ligase HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES1 (HOS1). However, recent work has suggested that HOS1 may have a wider range of roles in plants than previously appreciated. Here, we show that hos1 mutants are affected in circadian clock function, exhibiting a long-period phenotype in a wide range of temperature and light environments. We demonstrate that hos1 mutants accumulate polyadenylated mRNA in the nucleus and that the circadian defect in hos1 is shared by multiple mutants with aberrant mRNA export, but not in a mutant attenuated in nucleo-cytoplasmic transport of microRNAs. As revealed by RNA sequencing, hos1 exhibits gross changes to the transcriptome with genes in multiple functional categories being affected. In addition, we show that hos1 and other previously described mutants with altered mRNA export affect cold signaling in a similar manner. Our data support a model in which altered mRNA export is important for the manifestation of hos1 circadian clock defects and suggest that HOS1 may indirectly affect cold signaling through disruption of the circadian clock.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available