In days following cold nights, photosynthesis is reduced
[3,4]; however, the mechanisms underlying the inhibition of
photosynthesis under LNT remain unclear. In addition, photosystem
II (PSII) has long been considered as the component
of the photosynthetic system that is most sensitive to chilling
[5]. Nevertheless, recent studies have suggested that LNT does
not cause serious damage to PSII; instead, it inhibits its repair
mechanism [6]. Photoinhibition refers to the decline in photosynthetic
efficiency under the conditions in which the input of
photons exceeds the requirement for photosynthesis [7]. Low
temperature and high irradiance induce PSII photoinhibition and
photooxidation in tropical plants [8]. The photoinhibition of photosystem
I (PSI) in chilling-sensitive plants occurs during chilling