Claim · model-written summary
ICE1(K393R) expression induced MYB15 transcript accumulation.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- expression of ICE1(K393R)e0
- Gene
- MYB15e0
- Outcome
- transcript accumulation of MYB15e0
- Direction
- inducede0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“expression of ICE1(K393R) induced transcript accumulation of MYB15”
t0“Arabidopsis”
Title
SIZ1-Mediated Sumoylation of ICE1 ControlsCBF3/DREB1AExpression and Freezing Tolerance inArabidopsis
Kenji Miura; Jing Bo Jin; Jiyoung Lee; et al. The Plant Cell 2007. doi:10.1105/tpc.106.048397
Other claims from this paper (9)
- Intervention effect The siz1-2 and siz1-3 alleles caused freezing and chilling sensitivity, which SIZ1 expression complemented.
- Intervention effect siz1 repressed cold-induced CBF/DREB1 and regulon gene expression, especially CBF3/DREB1A.
- Intervention effect siz1 did not affect ICE1 expression.
- Intervention effect ICE1 K393R blocked SIZ1-mediated sumoylation in vitro and in protoplasts, identifying K393 as the principal SUMO conjugation site.
- Intervention effect Cold moderately induced SIZ1-dependent ICE1 sumoylation in protoplasts.
- Intervention effect Sumoylation reduced polyubiquitination of recombinant ICE1 in vitro.
- Intervention effect ICE1(K393R) expression repressed cold-induced CBF3/DREB1A expression in wild-type plants.
- Intervention effect ICE1(K393R) expression increased freezing sensitivity in wild-type plants.
- Mechanism The authors propose that SIZ1-dependent ICE1 sumoylation activates or stabilizes ICE1, enabling CBF3/DREB1A expression and MYB15 repression and leading to low-temperature tolerance.