Four A rabidopsis AREB / ABF transcription factors function predominantly in gene expression downstream of SnRK2 kinases in abscisic acid signalling in response to osmotic stress
The University of Tokyo · University of Tsukuba · +2 more institutions
Abstract
Under osmotic stress conditions such as drought and high salinity, the plant hormone abscisic acid (ABA) plays important roles in stress-responsive gene expression mainly through three bZIP transcription factors, AREB1/ABF2, AREB2/ABF4 and ABF3, which are activated by SNF1-related kinase 2s (SnRK2s) such as SRK2D/SnRK2.2, SRK2E/SnRK2.6 and SRK2I/SnRK2.3 (SRK2D/E/I). However, since the three AREB/ABFs are crucial, but not exclusive, for the SnRK2-mediated gene expression, transcriptional pathways governed by SRK2D/E/I are not fully understood. Here, we show that a bZIP transcription factor, ABF1, is a functional homolog of AREB1, AREB2 and ABF3 in ABA-dependent gene expression in Arabidopsis. Despite lower…
Citation impact
- FWCI
- 42.84
- Percentile
- 100%
- References
- 60
Authors
7Topics & keywords
- Abscisic acid
- Transcription factor
- Biology
- Gene
- Mutant
- Arabidopsis
- Gene expression
- Transcription (linguistics)
- Life below water