Photosynthesis limiting stresses under climate change scenarios and role of chlorophyll fluorescence: A review article

Continuous agricultural and other activities of human being have caused changes in the chemistry of global climate, as a consequence many biotic and abiotic stresses that reduce photosynthetic capacity of plants have emerged. Therefore, the aim of this review is to review photosynthesis limiting stresses under climate change scenarios and role of chlorophyll fluorescence on this stress. Different research findings indicate that UV-B radiation cause changes in biological processes of plants such as damage to the internal structure of photosynthesis or control its cellular process. Other type of stress is drought stress, which inhibits photosynthetic electron transport through Photosystem II and damages the oxygen evolving complex of PSII. On the other way, high night temperature stresses are increasing, and it can cause constant suppression of net CO2 assimilation rate in both C3 and C4 plants. Photoinhibition is considered as reactive oxygen species induced reduction of the primary acceptor of PSII plastoquinone (QA) or change in recombination between acceptor and donor side of P S I I. For assessing the effect of stress on photosynthesis, chlorophyll fluorescence is mostly used parameter and also it is an effective indicator of photosynthesis limiting stress and their mechanisms.