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J Photochem Photobiol B. 2014 Aug;137:116-26. doi: 10.1016/j.jphotobiol.2014.01.010. Epub 2014 Mar 21.

Photosynthesis: response to high temperature stress.

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School of Life Science, Devi Ahilya University, Indore 452001, India. Electronic address:
School of Life Science, Devi Ahilya University, Indore 452001, India.


Global warming has led to increased temperature of the earth which is a major abiotic stress posing a serious threat to the plants. Photosynthesis is amongst the plant cell functions that is highly sensitive to high temperature stress and is often inhibited before other cell functions are impaired. The primary sites of targets of high temperature stress are Photosystem II (PSII), ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) while Cytochrome b559 (Cytb559) and plastoquinone (PQ) are also affected. As compared to PSII, PSI is stable at higher temperatures. ROS production, generation of heat shock proteins, production of secondary metabolites are some of the consequences of high temperature stress. In this review we have summarized the physiological, biochemical and molecular aspects of high temperature stress on the process of photosynthesis, as well as the tolerance and adaptive mechanisms involved.


Avoidance; High temperature stress; Photosynthesis; Photosystem II; Rubisco; Tolerance

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