Degradation of MONOCULM 1 by APC/CTAD1 regulates rice tillering

• DOI: 10.1038/ncomms1743
• Publication Date: 2012-03-20T10:32:58Z
• Authors: Cao Xu; Yonghong Wang; Yanchun Yu; Jingbo Duan; Zhigang Liao; Guosheng Xiong; Xiangbing Meng; Guifu Liu; Qian Qian; Jiayang Li
• Keywords: Degradation

A rice tiller is a specialized grain-bearing branch that contributes greatly to grain yield. The MONOCULM 1 (MOC1) gene the first identified key regulator controlling number; however, underlying mechanism remains be elucidated. Here we report novel gene, Tillering and Dwarf (TAD1), which encodes co-activator of anaphase-promoting complex (APC/C), multi-subunit E3 ligase. Although elucidation co-activators individual subunits plant APC/C involved in regulating development have emerged recently, understanding whether how this large cell-cycle machinery controls still very limited. Our study demonstrates TAD1 interacts with MOC1, forms OsAPC10 functions as target MOC1 for degradation cell-cycle-dependent manner. findings uncovered new shoot branching shed light on regulates architecture. MONOCULM1 transcriptional tillering therefore In authors demonstrate TAD1, forming activates APC targets degradation.