Photoinhibition of photosystem II under environmental stress.

By N. Murata, S. Takahashi, Y. Nishiyama, Suleyman I. Allakhverdiev. Biochimica et Biophysica Acta, 2007

1,493 citations recorded by the source corpus.

Inhibition of the activity of photosystem II (PSII) under strong light is referred to as photoinhibition. This phenomenon is due to an imbalance between the rate of photodamage to PSII and the rate of the repair of damaged PSII. In the "classical" scheme for the mechanism of photoinhibition, strong light induces the production of reactive oxygen species (ROS), which directly inactivate the photochemical reaction center of PSII. By contrast, in a new scheme, we propose that photodamage is initiated by the direct effect of light on the oxygen-evolving complex and that ROS inhibit the repair of photodamaged PSII by suppressing primarily the synthesis of proteins de novo. The activity of PSII is restricted by a variety of environmental stresses. The effects of environmental stress on damage to and repair of PSII can be examined separately and it appears that environmental stresses, with the exception of strong light, act primarily by inhibiting the repair of PSII. Studies have demonstrated that repair-inhibitory stresses include CO(2) limitation, moderate heat, high concentrations of NaCl, and low temperature, each of which suppresses the synthesis of proteins de novo, which is required for the repair of PSII. We postulate that most types of environmental stress inhibit the fixation of CO(2) with the resultant generation of ROS, which, in turn, inhibit protein synthesis.

Subfields: Cellular and Molecular Neuroscience, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/3f50492f4eca650fbadf423b9b0437f388f3dee1

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Citations in the corpus

Regulation of Photosynthesis during Abiotic Stress-Induced Photoinhibition. (2015, methodology): “The inhibition of PSII activity under continuous exposure to HL is commonly 114 known as photoinhibition (Murata et al., 2007).”
Sucrose signaling pathways leading to fructan and anthocyanin accumulation: A dual function in abiotic and biotic stress responses? (2014, background): “…superoxide 4 radicals and singlet oxygen in chloroplasts (Hare et al., 1998; Shao et al., 2008), 5 damaging membranes, DNA and proteins and inhibiting de novo protein synthesis 6 (Murata et al., 2007), potentially leading to ageing or cell death (Van Breusegem and Dat, 7 2006; Marchi et al., 2012).”
Comprehending crystalline β-carotene accumulation by comparing engineered cell models and the natural carotenoid-rich system of citrus (2011, neutral): “Photoinhibition is a complex phenomenon that may cause damage to the photosynthetic apparatus reducing the photosynthetic efficiency when light conditions exceed the photon requirements for photosynthesis (Murata et al., 2007).”
Increased rate of D1 repair in coral symbionts during bleaching is insufficient to counter accelerated photo‐inactivation (2011, background): “2007), and their rate for metabolic clearance and replacement of damaged components of PSII (Aro et al. 1993; Silva et al. 2003; Murata et al. 2007).”
Heat stress effects and management in wheat. A review (2017, background): “The reduction of carbon assimilation reduces ROS generation which, in turn, reduces protein synthesis and inhibits repairing of damaged photosystem-II (Murata et al. 2007; Allakhverdiev et al. 2008).”
ROS-mediated abiotic stress-induced programmed cell death in plants (2015, background): “H2O2 has also been shown to initiate PCD in excessively light-stressed plants (Vandenabeele et al., 2003; Mullineaux et al., 2006).”
Response of Carbon and Nitrogen Metabolism and Secondary Metabolites to Drought Stress and Salt Stress in Plants (2019, background): “When plants subjected to various stress conditions, it is affected by many factors (Nishiyama et al. 2001; Allakhverdiev and Murata 2004; Murata et al. 2007; Mohanty et al. 2007).”