Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/28284
Title: Functional characterization of AGL17 in Arabidopsis
Authors: HAN PING
Keywords: AGAMOUS-LIKE 17, flowering time, CONSTANS, photoperiod, MADS-box gene, Arabidopsis
Issue Date: 23-Apr-2008
Source: HAN PING (2008-04-23). Functional characterization of AGL17 in Arabidopsis. ScholarBank@NUS Repository.
Abstract: MADS-box genes encode a family of transcription factors that are key regulators in reproductive and vegetative plant development. In this study, we report that AGL17, a MADS-box gene, which was previously shown to be expressed mainly in roots, functions in the promotion of flowering in Arabidopsis. Overexpression of AGL17 caused early flowering, while loss-of-function mutants agl17-1 exhibited late flowering particularly under long days. AGL17 transcripts were significantly reduced in the photoperiod pathway mutant co-1. Correspondingly, AGL17 expression was upregulated in transgenic plants overexpressing CO and also when CO activity was induced by light. These results suggest that AGL17 is positively regulated by CO and is involved in the regulation of flowering via the photoperiod pathway. It appears that AGL17 promotes early flowering by activating downstream target genes, LFY and AP1. In addition, AGL17 is found to be involved in the regulation of JA-induced changes in Arabidopsis root architecture.
URI: http://scholarbank.nus.edu.sg/handle/10635/28284
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