Coordinating the overall stomatal response of plants : rapid leaf-to-leaf communication during light stress
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Plants, being sessile organisms, have evolved unique mechanisms enabling them to rapidly react to ever-changing environmental conditions. In nature, light is one of the significant and most variable natural parameters in determining the plant's growth and development and is a major energy source for photosynthesis. Changes in light intensities can occur very rapidly, sometimes within minutes or seconds. Plants have to adjust to the fluctuations in the light intensity and quality and acclimate accordingly to ensure optimal photosynthetic yield. Stomatal movement is an acclamatory mechanism in plants that are affected by the light intensities. Stomata are microscopic pores on the leaf surface that are crucial for CO2 uptake and water economy in plants. The size of the stomatal aperture is influenced by various environmental factors and is regulated by hormones and their signaling components, secondary messengers and the influx and efflux of osmotically active ions via ion channels.
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