Abstract
Extreme temperatures are among the most important stressors limiting plant growth and development. Results indicate that light substantially influences the acclimation processes to both low and high temperatures, and it may affect the level of stress injury. The interaction between light and temperature in the regulation of stress acclimation mechanisms is complex, and both light intensity and spectral composition play an important role. Higher light intensities may lead to overexcitation of the photosynthetic electron transport chain; while different wavelengths may act through different photoreceptors. These may induce various stress signalling processes, leading to regulation of stomatal movement, antioxidant and osmoregulation capacities, hormonal actions, and other stress-related pathways. In recent years, we have significantly expanded our knowledge in both light and temperature sensing and signalling. The present review provides a synthesis of results for understanding how light influences the acclimation of plants to extreme low or high temperatures, including the sensing mechanisms and molecular crosstalk processes.
Highlights
Climate change may exacerbate the frequency and severity of a number of stresses.It leads to increasing air CO2 level and global temperature with extreme temperature waves, and it may cause dramatic changes in precipitation, which altogether may have multiple effects on crop production
The interaction between light and temperature in the regulation of stress acclimation mechanisms is complex. It involves various processes, including regulation of stomatal movement, nitrogen metabolism, antioxidant and osmoregulation capacities, and signal transduction in stress-related pathways. Since this question is both of theoretical and practical importance, in the present review, we focused on the light- and temperaturesensing mechanisms and interactions between the acclimation to high or low temperatures and the light-mediated processes
The induction or suppression of various can be deduced from the fact that genes induced by low temperature and hydrogen genes by light may indicate either a crosstalk chloroplast-originating and peroxide signalling may substantially overlap,between as it wasthe shown in cold-tolerant japonica photosynthesis-independent protective mechanisms or the involvement of different light rice plants [54]
Summary
Climate change may exacerbate the frequency and severity of a number of stresses It leads to increasing air CO2 level and global temperature with extreme temperature waves, and it may cause dramatic changes in precipitation, which altogether may have multiple effects on crop production. One reason is the growing amount of evidence indicating the role of light intensity and spectral composition in the development of stress tolerance This issue will become even more important in the future prospect of changing global climate. It involves various processes, including regulation of stomatal movement, nitrogen metabolism, antioxidant and osmoregulation capacities, and signal transduction in stress-related pathways Since this question is both of theoretical and practical importance, in the present review, we focused on the light- and temperaturesensing mechanisms and interactions between the acclimation to high or low temperatures and the light-mediated processes
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