Detailed gene information

Genes [306]




GAI, RGA2
GIBBERELLIC ACID INSENSITIVE, RESTORATION ON GROWTH ON AMMONIA 2
TAIR: AT1G14920
UNIPROT: Q9LQT8
NOWOMICS: View List

Publications

Peng J et al., 1993, Plant Cell
Wilson R N et al., 1995, Plant Physiol.
Peng J et al., 1997, Genes Dev.
Dill A et al., 2001, Genetics
King K E et al., 2001, Genetics
Oh E et al., 2007, Plant Cell

Appears in the following schemes

Hormone pathway
Gibberellin metabolism
Gibberellin receptors
Aging pathway
Photoperiod pathway

Protein function

Encodes a negative regulator of gibberellin response that belongs to the DELLA family.

Phenotype

Single mutant:
gai-d loss of function single mutant does not display any flowering-time phenotype. [Peng et al., 1993]

Overexpressor:
gai gain of function mutant and GAI overexpressor are late flowering under both SD and LD conditions. [Wilson et al., 1992][Park et al., 2013][Putterill et al., 1995]

Function:
Probable transcriptional regulator that acts as a repressor of the gibberellin (GA) signaling pathway. No effect of the BOI proteins on its stability. Probably acts by participating in large multiprotein complexes that repress transcription of GA-inducible genes. Positively regulates XERICO expression. In contrast to RGA, it is less sensitive to GA. Its activity is probably regulated by other phytohormones such as auxin and ethylene. [Data from UniProt]

Regulators, targets and interactors

Downstream actors

causality
FT -- [Yu et al., 2012][Porri et al., 2012][Galvão et al., 2012] -- [View TAIR record]

SPL9 -- [Yu et al., 2012][Porri et al., 2012][Galvão et al., 2012] -- [View TAIR record]

MIR172A -- [Galvão et al., 2012] -- [View TAIR record]

LFY -- [Blázquez et al., 2000][Eriksson et al., 2006][Blázquez et al., 1997] -- [View TAIR record]

PIF4 -- [de Lucas et al., 2008] -- [View TAIR record]

SPL5 -- [Yu et al., 2012][Porri et al., 2012][Galvão et al., 2012] -- [View TAIR record]

MIR172C -- [Galvão et al., 2012] -- [View TAIR record]

TSF -- [Porri et al., 2012][Galvão et al., 2012] -- [View TAIR record]

SPL3 -- [Yu et al., 2012][Porri et al., 2012][Galvão et al., 2012] -- [View TAIR record]

MIR172B -- [Galvão et al., 2012] -- [View TAIR record]



Upstream actors

causality
GID1A -- [Griffiths et al., 2006][Ariizumi et al., 2008][Nakajima et al., 2006][Silverstone et al., 2001][Peng et al., 1997] -- [View TAIR record]

GID1C -- [Griffiths et al., 2006][Ariizumi et al., 2008][Nakajima et al., 2006][Silverstone et al., 2001][Peng et al., 1997] -- [View TAIR record]

GID1B -- [Griffiths et al., 2006][Ariizumi et al., 2008][Nakajima et al., 2006][Silverstone et al., 2001][Peng et al., 1997] -- [View TAIR record]



Protein-protein interactions

PIF4 -- [de Lucas et al., 2008] -- [View TAIR record]



GAI, RGA2 interaction network

Downstream and upstream flowering-related genes

Physical interactions with other flowering-related proteins