Role of Arabidopsis Splicing factor SF1 in Temperature-Responsive Alternative Splicing of FLM pre-mRNA
- Authors
- Lee, Keh Chien; Chung, Kyung Sook; Lee, Hee Tae; Park, Jae-Hyeok; Lee, Jeong Hwan; Kim, Jeong-Kook
- Issue Date
- 1-12월-2020
- Publisher
- FRONTIERS MEDIA SA
- Keywords
- alternative splicing; ambient temperature; Arabidopsis thaliana; AtSF1; FLM; FLM-& #946; FLM-& #948; temperature-responsive flowering
- Citation
- FRONTIERS IN PLANT SCIENCE, v.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- FRONTIERS IN PLANT SCIENCE
- Volume
- 11
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/50863
- DOI
- 10.3389/fpls.2020.596354
- ISSN
- 1664-462X
- Abstract
- Small changes in temperature affect plant ecological and physiological factors that impact agricultural production. Hence, understanding how temperature affects flowering is crucial for decreasing the effects of climate change on crop yields. Recent reports have shown that FLM-beta, the major spliced isoform of FLOWERING LOCUS M (FLM)-a flowering time gene, contributes to temperature-responsive flowering in Arabidopsis thaliana. However, the molecular mechanism linking pre-mRNA processing and temperature-responsive flowering is not well understood. Genetic and molecular analyses identified the role of an Arabidopsis splicing factor SF1 homolog, AtSF1, in regulating temperature-responsive flowering. The loss-of-function AtSF1 mutant shows temperature insensitivity at different temperatures and very low levels of FLM-beta transcript, but a significantly increased transcript level of the alternative splicing (AS) isoform, FLM-delta. An RNA immunoprecipitation (RIP) assay revealed that AtSF1 is responsible for ambient temperature-dependent AS of FLM pre-mRNA, resulting in the temperature-dependent production of functional FLM-beta transcripts. Moreover, alterations in other splicing factors such as ABA HYPERSENSITIVE1/CBP80 (ABH1/CBP80) and STABILIZED1 (STA1) did not impact the FLM-beta/FLM-delta ratio at different temperatures. Taken together, our data suggest that a temperature-dependent interaction between AtSF1 and FLM pre-mRNA controls flowering time in response to temperature fluctuations.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Life Sciences and Biotechnology > Division of Life Sciences > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholar.korea.ac.kr/handle/2021.sw.korea/50863)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.