PSII	Photosystem II
ROS	Reactive Oxygen Species
MDA	Malondialdehyde
SOD	Superoxide Dismutase
POD	Peroxidase
CAT	Catalase
SPAD	Chlorophyll content
Fo	Minimal fluorescence (all reaction centers open)
Fk	Fluorescence intensity at the K-step
FJ	Fluorescence intensity at the J-step
FI	Fluorescence intensity at the I-step
Fm	Maximal fluorescence (all reaction centers closed)
Ft	Fluorescence at time t
Vt	Relative variable fluorescence at time t
Wk	Damage index to the Oxygen-Evolving Complex
Fv/Fm	Maximum quantum efficiency of PSII photochemistry
φPo	Maximum quantum yield of primary photochemistry
PIABS	Performance index on absorption basis
φEo	Quantum yield of electron transport beyond QA−
Mo	Initial slope of the fluorescence rise
Sm	Normalized area above the OJIP curve (proportional to the plastoquinone pool size)
RC/CSm	Reaction centers per cross-section
DIo/RC	Dissipated energy flux per reaction center
ETo/RC	Electron transport flux beyond QA− per reaction center
OEC	Oxygen-evolving complex
QA	Primary quinone electron acceptor of PSII
PQ	Plastoquinone