Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
Volume 137, Issue -, Pages 116-126Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotobiol.2014.01.010
Keywords
High temperature stress; Photosynthesis; Photosystem II; Rubisco; Avoidance; Tolerance
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Funding
- Council of Scientific and Industrial Research (CSIR), India [09/301/(0125)/2013/EMR-I]
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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. (C) 2014 Elsevier B.V. All rights reserved.
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