Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121312
Title: THE MADS-BOX TRANSCRIPTION FACTOR SOC1 REGULATES GIBBERELLIN CATABOLISM TO CONTROL BOLTING IN ARABIDOPSIS
Authors: ZHOU JIANNAN
Keywords: SOC1, Gibberellin, GA2ox, Bolting, LEAFY, TOPLESS
Issue Date: 20-Aug-2015
Source: ZHOU JIANNAN (2015-08-20). THE MADS-BOX TRANSCRIPTION FACTOR SOC1 REGULATES GIBBERELLIN CATABOLISM TO CONTROL BOLTING IN ARABIDOPSIS. ScholarBank@NUS Repository.
Abstract: DURING THE FLORAL TRANSITION OF ARABIDOPSIS, THE SHOOT APICAL MERISTEM INITIATES TO PRODUCE FLORAL PRIMORDIA INSTEAD OF LEAF PRIMORDIA. THE BOLTING TRANSITION IS THE ELONGATION OF THE FIRST INTERNODE THAT MARKS THE END OF ROSETTE LEAF PRODUCTION AND THE BEGINNING OF CAULINE LEAF PRODUCTION. THE FLORAL TRANSITION AND BOLTING TRANSITION ARE TWO CLOSELY LINKED PROCESSES IN ARABIDOPSIS, YET THEY CAN BE UNCOUPLED UNDER NON-OPTIMAL CONDITIONS AND IN SOME MUTANTS. THE PLANT HORMONE GIBBERELLIN (GA) HAS BEEN FOUND TO BE INDISPENSABLE FOR THE ELONGATION OF STEM AND BOLTING. THE LEAFY MUTANT HAS A NORMAL NUMBER OF ROSETTE LEAVES, BUT GENERATES MANY MORE CAULINE LEAVES. I HAVE FOUND THAT SOC1 DIRECTLY REGULATES THE GIBBERELLIN CATABOLISM GENES, GA2OX1 AND GA2OX2, TO MODULATE GIBBERELLIN LEVELS IN A TISSUE SPECIFIC MANNER. MOREOVER, LEAFY IS ALSO DIRECTLY UPREGULATED BY SOC1 DURING THE FLORAL TRANSITION. CONSEQUENTLY, SOC1 CAN CONTROL THE BOLTING TRANSITION AND THE FLORAL TRANSITION COORDINATELY.
URI: http://scholarbank.nus.edu.sg/handle/10635/121312
Appears in Collections:Ph.D Theses (Open)

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