WRKY Proteins: Signaling and Regulation of Expression during Abiotic Stress Responses

Table 2

Role of WRKY proteins in both abiotic and biotic stresses.

Stress type	Gene	Inducible factors	Function in stress	References
Abiotic stress	AtWRKY2	NaCl, mannitol	Negatively regulates ABA signaling	[74]
	AtWRKY18	ABA	ABA signaling and salt tolerance	[119]
	AtWRKY26	Heat	Heat tolerance	[34]
	AtWRKY39	Heat	Heat tolerance	[96]
	AtWRKY40	ABA	ABA signaling	[119]
	OsWRKY08	Drought, salinity, ABA, and oxidative stress	Tolerance towards oxidative stress	[120]
	OsWRKY11	Heat, drought	Xerothermic stress tolerance	[121]
	OsWRKY89	Salinity, ABA, and UV-B	UV-B radiation tolerance	[122]
	OsWRKY45	Salt, drought	Salt and drought tolerance	[123]
	OsWRKY72	Salt, drought	Salt and drought tolerance	[124]
	GmWRKY21	Salt, cold, and drought	Cold tolerance	[72]
	GmWRKY54	Salt, drought	Salt and drought tolerance	[72]
Biotic stress	AtWRKY38	Target of NPR1 during Systemic Acquired Resistance (SAR)	Increases Salicylic Acid- (SA-) mediated response	[125]
	AtWRKY53	Target of NPR1 during SAR	Increases SA- mediated response	[125]
	AtWRKY66	Target of NPR1 during SAR	Increases SA- mediated response	[125]
	AtWRKY70	Target of NPR1 during SAR	Node of convergence for SA-mediated and jasmonic acid- (JA-) mediated defence signaling	[126]
	OsWRKY31	Magnaporthe oryzae	Increased resistance	[127]
	OsWRKY45	M. oryzae	Increased resistance	[128]
	OsWRKY77	Pseudomonas syringae	Positively regulates plant basal resistance	[129]
	HvWRKY10	Effector Triggered Immunity (ETI)	ETI activator	[130]

“At” refers to Arabidopsis thaliana, “Os” to Oryza sativa, “Gm” to Glycine max, and “Hv” to Hordeum vulgare.