RID1 , encoding a Cys2/His2-type zinc finger transcription factor, acts as a master switch from vegetative to floral development in rice

• DOI: 10.1073/pnas.0806019105
• Publication Date: 2008-08-26T01:09:32Z
• Authors: Changyin Wu; Changjun You; Caishun Li; Tuan Long; Guoxing Chen; Mary E. Byrne; Qifa Zhang
• Keywords: Wild type

Transition from the vegetative phase to reproductive is a crucial process in life cycle of higher plants. Although molecular mechanisms flowering regulation have been extensively characterized number plant species, little known regarding how transition initiates. Here, we show that Rice Indeterminate 1 ( RID1 ) gene acts as master switch for phase. encodes Cys-2/His-2-type zinc finger transcription factor does not an ortholog Arabidopsis spp. A knockout rid1 ), mutated by T-DNA insertion, never headed after growing >500 days under range growth conditions and thus referred never-flowering phenotype. This mutation-suppressed expression genes be involved regulation, especially Ehd1 / Hd3a pathway series RFT homologs. seems independent circadian clock. model was proposed place pathways rice, which there are two indispensable elements. In first, controlling initiation floral induction. other, RFL1 FTL complex immediate inducer flowering. Loss function either element would cause never-flowering. Once induced with activation , signal transduced regulated through various eventually integrated FT -like proteins induce