Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/49503
Title: AN ARABIDOPSIS MADS-BOX GENE, SEPALLATA 4, REGULATES FLOWERING TIME
Authors: JIE LIU
Keywords: Flowering time, SEPALLATA 4, SOC1, TEM1/2, MADS-BOX gene, FT
Issue Date: 10-Jan-2014
Source: JIE LIU (2014-01-10). AN ARABIDOPSIS MADS-BOX GENE, SEPALLATA 4, REGULATES FLOWERING TIME. ScholarBank@NUS Repository.
Abstract: The flowering time of Arabidopsis is controlled by a complex regulatory network that converges the environmental and endogenous signals on two floral pathway integrators, FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1). Here we report that another MADS-box gene SEPALLATA4 (SEP4), which was early identified as a floral organ identity gene, plays a redundant function with SOC1 in promoting flowering in Arabidopsis. SEP4 is ubiquitously expressed in various plant tissues, and regulated by the autonomous and photoperiod pathways. Overexpression of SEP4 causes early flowering, and loss of its function in sep4-1 enhances the late-flowering phenotype of soc1-2. We have revealed that the potential downstream target genes of SEP4 are FT, TEMPRANILLO1 (TEM1) and TEM2. In addition, we have further identified the interacting partners of SEP4. These studies shed light on the regulatory network involving SEP4 in the control of flowering time in Arabidopsis.
URI: http://scholarbank.nus.edu.sg/handle/10635/49503
Appears in Collections:Master's Theses (Open)

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