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Author Jiang P., Wang S., Jiang H., Cheng B., Wu K., Ding Y.
Title The COMPASS-Like Complex Promotes Flowering and Panicle Branching in Rice.
Flowering time (heading date) and panicle branch number are important agronomic traits that determine yield in rice (<i>Oryza sativa</i>). The activation of flowering requires histone methylation, but the roles of trimethylation of Lys 4 of histone 3 (H3K4me3) in modulating heading date and panicle development are unclear. Here, we showed that the COMPASS-like complex promotes flowering and panicle branching. The rice (<i>Oryza sativa</i>) WD40 protein OsWDR5a interacts with the TRITHORAX-like protein OsTrx1/SET domain group protein 723 (SDG723) to form the core components of the COMPASS-like complex. Plants in which <i>OsWDR5a</i> or <i>OsTrx1</i> expression was decreased by RNA interference produced fewer secondary branches and less grain and exhibited a delayed heading date under long-day and short-day conditions, whereas loss of <i>OsWDR5a</i> function resulted in embryo lethality. OsWDR5a binds to <i>Early heading date 1</i> to regulate its H3K4me3 and expression levels. Together, our results show that the COMPASS-like complex promotes flowering and panicle development and suggest that modulation of H3K4me3 levels by the COMPASS-like complex is critical for rice development.
Journal Plant Physiol.
Country unknown
Volume 176(4)
Pages 2761-2771
Year 2018
PubMed ID 29440594
PubMed Central ID 5884598
DOI 10.1104/pp.17.01749
Gene EF1 GHD7 HD3A MADS51 RFT1 _ _ _
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
Stages in Each Organ
- Muant Lines (Gene)
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -