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Author Zhao J., Wang T., Wang M., Liu Y., Yuan S., Gao Y., Yin L., Sun W., Peng L., Zhang W., Wan J., Li X.
Title DWARF3 participates in an SCF complex and associates with DWARF14 to suppress rice shoot branching.
Abstract:
Strigolactones (SLs) are a novel class of plant hormones that inhibit shoot branching. Currently, two proteins in rice are thought to play crucial roles in SL signal transduction. DWARF14 (D14), an alpha/beta hydrolase, is responsible for SL perception, while DWARF3 (D3), an F-box protein with leucine-rich repeats, is essential for SL signal transduction. However, how these two proteins transmit SL signals to downstream factors remains unclear. Here, we characterized a high-tillering dwarf rice mutant, gsor300097, which is insensitive to GR24, a synthetic analog of SL. Mapping and sequencing analysis showed that gsor300097 is a novel allelic mutant of D3, in which a nonsense mutation truncates the protein from 720 to 527 amino acids. The D3 gene was strongly expressed in root, leaf, shoot base and panicle. Nuclear-localized F-box protein D3 played a role in the SCF complex by interacting with OSK1, OSK5 or OSK20 and OsCullin1. In addition, D3 associated with D14 in a GR24-dependent manner in vivo. Taken together, our findings suggested that D3 assembled into an SCF(D3) complex and associated with D14 to suppress rice shoot branching.
Journal Plant Cell Physiol.
Country unknown
Volume 55(6)
Pages 1096-109
Year 2014
PubMed ID 24616269
PubMed Central ID -
DOI 10.1093/pcp/pcu045
URL -
Relation
Gene CUL1 D14 D3 OSK1 OSK20 SK10 SK15 SK19 SK2 SK21 SK28 SK3 SK6 _
INSD -
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 -
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