H2	hydrogen gas
H2S	hydrogen Sulfide
NO	nitric Oxide
CO	carbon Monoxide
CH4	methane
EC	electrolyte leakage
H2O2	hydrogen peroxide
MDA	malondialdehyde
ROS	reactive oxygen species
ABA	abscisic acid
GSH	glutathione
AsA-GSH	ascorbate–glutathione
AsA	ascorbic acid
HO-1	heme oxygenase-1
HO	heme oxygenase
HRW	hydrogen-rich water
Cu	copper
Cd	cadmium
Al	aluminum
Hg	mercury
Zn	zinc
Ni	nickel
Pb	lead
As	arsenate
UV	ultraviolet radiation
NPT	nonprotein thiols
Pro	proline
pH	potential of hydrogen
SOD	superoxide dismutase
MAPK	mitogen-activated protein kinase
TPC	total phenolic contents
NADPH	nicotinamide adenine dinucleotide phosphate
TBARS	thiobarbituric acid reactive substances
CAT	catalase
APX	ascorbate peroxidase
POD	peroxidase
LCD	L-cysteine desulfhydrase
DCD	D-cysteine desulfhydrase
GR	glutathione reductase
DHAR	dehydroascorbate reductase
PCD	programmed cell death
O2⋅−	superoxide anion
·OH	hydroxy radicals