Table 1.

Different epigenetic processes and the associated genes.

Epigenetic process	Gene/enzyme	Function	Plant	Reference
DNA methylation	Asr1 and Asr2	Drought stress tolerance	Tomato	[99]
Demethylation and hypomethylation	Glyma11g02400	Salinity tolerance	Soybean	[61]
Histone modification	OsHAM701	Drought stress tolerance	Rice	[28, 100]
Histone modification	OsHAC701	Heat stress tolerance	Rice	[101, 102]
Histone modification	AtABO1	Drought and oxidative stress tolerance	Arabidopsis	[103, 104]
Histone modification	AtATX1/HvTX1	Drought stress tolerance	Arabidopsis and barley	[75, 105]
Hypomethylation	NtGPDL	Cold tolerance	Tobacco	[106, 107]
MicroRNA	miR170, miR171 and miR172	Drought tolerance	Wheat/millet	[108, 109]