. 2019 Dec 11;8(12):592. doi: 10.3390/plants8120592

Table 1.

List of the target genes that are regulated by ABA as well as Ca²⁺ signaling.

Gene Name	Accession Number	Main Function	Regulated by Ca²⁺-Dependent ABA Signaling	Regulated by Ca²⁺-Independent ABA Signaling	Reference
ABI5	AT2G36270	bZIP TF	CIPK11/26, activates by phosphorylation	SnRK2s’ phosphorylation activation; PP2Cs’ dephosphorylated inactivation	[67,101,102]
ABF1/4	AT1G49720/ AT3G19290	bZIP TF	CPK4/11, activates by phosphorylation	SnRK2s’ phosphorylation activation; PP2Cs’ dephosphorylated inactivation	[101,103]
AKT1	AT2G26650	Potassium ion channel	CBL1/9/CIPK23, activates by phosphorylation	HAI2 and PP2CA, regulate AKT1	[104,105,106]
AKT2	AT4G22200	Potassium ion channel	CBL4/CIPK6, localized in the plasma membrane	PP2CA, regulates AKT2	[107,108]
KAT1	AT5G46240	Potassium channel	Inhibited by the SnRK2s and involved in the stomatal closure	Inhibition by SnRK2s is inhibited by ABI1, involved in the stomatal opening	[109,110]
NPF6.3	AT1G12110	Nitrate transporter	CBL1/9CIPK23, deactivates under high nitrate conditions and increases the nitrate sensitivity	ABI2 involved in the dephosphorylation or deactivation of CBL1/CIPK23	[111,112]
SLAC1	AT1G12480	Plasma membrane anion channel	Induced by the SnRK2s and involved in stomatal closure	Induction by SnRK2s is inhibited byABI1, involved in the stomatal opening	[113,114]
RBOHF	AT1G64060	Plasma membrane superoxide generation	CBL1/9/IPK26, activates by phosphorylation	OST1 involved in phosphorylation	[115,116]
RBOHD	AT5G47910	Plasma membrane superoxide generation	CPK5, activates by phosphorylation	-	[96]
SnRK2.6/OST1	AT4G33950	Calcium-independent ABA-activated protein kinase	CBL/CIPL/CDPK, activates by phosphorylation	SnRK2.6 involved in phosphorylation	[112,117]
SLAH3	AT5G24030	Anion channel	CBL1/9/CIPK23	ABI1 involved in deactivation	[95,118,119]
SLAH3	AT5G24030	Anion channel	CPK21 involved in phosphorylated activation; CPK21 also recruits SLAH3 onto the membrane	ABI1 involved in deactivation	[95,118,119]