stress under low irradiance [9]. Re

stress under low irradiance [9]. Reportedly, the activity of PSI
decreases by approximately 70–80% when cucumber leaves were
subjected to 5 ◦C with an irradiance of 100 mol m−2 s−1 [10].
Although light is an essential factor in the photoinhibition of
PSI, chilling temperature plays a crucial role in inducing photoinhibition.
Little is known about the effects of LNT on the
acceptor or donor side inhibition of PSI in tomato leaves in
vivo.