- Information
- Symbol: BC3,OsDRP2B
- MSU: LOC_Os02g50550
- RAPdb: Os02g0738900
- PSP score
- LOC_Os02g50550.1: 0.9133
- PLAAC score
- LOC_Os02g50550.1: 0
- pLDDT score
- NA
- Publication
- Genbank accession number
- Key message
- Mutation of OsDRP2B disturbs the membrane trafficking that is essential for normal cellulose biosynthesis of the secondary cell wall, thereby leading to inferior mechanical properties in rice plants
- The bc3 mutation resulted in reductions of 28-36% in cellulose contents in culms, leaves, and roots, while other cell wall components remained unaffected
- From promoter-GUS analyses, it was suggested that BC3 expression is directly correlated with active secondary cell wall synthesis
- These results suggest that BC3 is tightly involved in the synthesis of cellulose and is essential for proper secondary cell wall construction
- Rice BRITTLE CULM 3 (BC3) encodes a classical dynamin OsDRP2B essential for proper secondary cell wall synthesis
- Here, we report the functional characterization of Brittle Culm3 (BC3), a gene encoding OsDRP2B
- Consistent with the expression of BC3 in mechanical tissues, the bc3 mutation reduces mechanical strength, which results from decreased cellulose content and altered secondary wall structure
- BC3 mutation and overexpression altered the abundance of cellulose synthase catalytic subunit 4 (OsCESA4) in the PM and in the endomembrane systems
- Through positional cloning, we have identified a gene responsible for the brittle culm phenotype in rice, brittle culm 3 (bc3)
- Connection
- BC3~OsDRP2B, OsCesA4~Bc7~bc11, The rice dynamin-related protein DRP2B mediates membrane trafficking, and thereby plays a critical role in secondary cell wall cellulose biosynthesis, BC3 mutation and overexpression altered the abundance of cellulose synthase catalytic subunit 4 (OsCESA4) in the PM and in the endomembrane systems
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