ABA -
DREB1 and DREB2 are two independent families of DREB proteins, which function as
trans-acting factors in two separate signal transaction pathways under low temperature
and dehydration. The ABA-responsive element (ABREs) contains the palindromic motif CACGTC with the G-box ACGT core element and A 9-bp conserved sequence,TACGACAT,termed dehydration responsive element (DRE), is essential for regulation of dehydration-responsive gene expression. The DRE has been reported to function as a cis- acting element involved in the induction of rd29A expression by low temperature stress.
GIBBERLLIN-
Gibberllin (GA) regulate gene expressions by promoting degradation of the transcriptional regulator DELLA proteins, is essential for GA action that form a subgroup of the GRAS family of proteins. DELLA proteins are named for a conserved domain within the N terminus that is unique to this
subgroup and is necessary for GA-induced degradation.Binding of GA to its soluble, nuclear receptor,GID1, causes a conformational change in the protein that promotes its association with the
N-terminal domain of the DELLA protein, enabling, in turn, interaction with an SCF ubiquitin ligase, such that the DELLA is ubiquitinated, and thus targeted for degradation via the 26S proteasome.
ETHYLENE -
There are many different types of receptor for ethylene like ETR1, ETR2, and ETHYLENE
INSENSITIVE4 (EIN4). ETR1 show the histidine kinase activity. Any mutation in EIN2 will
lead to the loss of ethylene responsiveness throughout plant development.
DREB1 and DREB2 are two independent families of DREB proteins, which function as
trans-acting factors in two separate signal transaction pathways under low temperature
and dehydration. The ABA-responsive element (ABREs) contains the palindromic motif CACGTC with the G-box ACGT core element and A 9-bp conserved sequence,TACGACAT,termed dehydration responsive element (DRE), is essential for regulation of dehydration-responsive gene expression. The DRE has been reported to function as a cis- acting element involved in the induction of rd29A expression by low temperature stress.
GIBBERLLIN-
Gibberllin (GA) regulate gene expressions by promoting degradation of the transcriptional regulator DELLA proteins, is essential for GA action that form a subgroup of the GRAS family of proteins. DELLA proteins are named for a conserved domain within the N terminus that is unique to this
subgroup and is necessary for GA-induced degradation.Binding of GA to its soluble, nuclear receptor,GID1, causes a conformational change in the protein that promotes its association with the
N-terminal domain of the DELLA protein, enabling, in turn, interaction with an SCF ubiquitin ligase, such that the DELLA is ubiquitinated, and thus targeted for degradation via the 26S proteasome.
ETHYLENE -
There are many different types of receptor for ethylene like ETR1, ETR2, and ETHYLENE
INSENSITIVE4 (EIN4). ETR1 show the histidine kinase activity. Any mutation in EIN2 will
lead to the loss of ethylene responsiveness throughout plant development.
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