- Information
- Symbol: OsDDM1b
- MSU: LOC_Os03g51230
- RAPdb: Os03g0722400
- Publication
- DDM1 decrease in DNA methylation genes in rice Oryza sativa, 2012, Mol Genet Genomics.
- The ortholog of DDM1 is mainly required for CHG and CG methylation of heterochromatin and is involved in DRM2-mediated CHH methylation that targets mostly genic regions of the rice genome., 2016, Plant Physiol.
- OsDDM1b Controls Grain Size by Influencing Cell Cycling and Regulating Homeostasis and Signaling of Brassinosteroid in Rice., 2022, Front Plant Sci.
- Genbank accession number
- Key message
- OsDDM1b Controls Grain Size by Influencing Cell Cycling and Regulating Homeostasis and Signaling of Brassinosteroid in Rice.
- We further analyzed the OsDDM1b T-DNA insertion loss-of-function of mutant, which exhibited dwarfism, smaller organ size, and shorter and wider grain size than the wild type (Hwayoung, HY), yet no difference in 1,000-grain weight
- Consistent with the grain size, the outer parenchyma cell layers of lemma in osddm1b developed more cells with decreased size
- OsDDM1b encoded a nucleus, membrane-localized protein and was distributed predominately in young spikelets and seeds, asserting its role in grain size
- We detected changes in the expression levels of the BR signaling pathway and feedback-inhibited genes with and without exogenous BR application, and the alterations of expression were also observed in grain size-related genes in the osddm1b
- Altogether, our results suggest that OsDDM1b plays a crucial role in grain size via influencing cell proliferation and regulating BR signaling and homeostasis
- Meanwhile, the osddm1b was less sensitive to brassinosteroids (BRs) while the endogenous BR levels increased
- Connection
- OsDDM1a, OsDDM1b, DDM1 decrease in DNA methylation genes in rice Oryza sativa, In this study, we identified two rice genes with similarity to Arabidopsis DDM1 and designated them OsDDM1a and OsDDM1b
Prev Next