Light-Mediated Signaling and Metabolic Changes Coordinate Stomatal Opening and Closure
Stomata are valves on the leaf surface controlling carbon dioxide (CO ) influx for photosynthesis and water loss by transpiration. Thus, plants have to evolve elaborate mechanisms controlling stomatal aperture to allow efficient photosynthesis while avoid excessive water loss. Light is not only the...
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Published in | Frontiers in plant science Vol. 11; p. 601478 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
Frontiers Media S.A
04.12.2020
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Subjects | |
Online Access | Get full text |
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Summary: | Stomata are valves on the leaf surface controlling carbon dioxide (CO
) influx for photosynthesis and water loss by transpiration. Thus, plants have to evolve elaborate mechanisms controlling stomatal aperture to allow efficient photosynthesis while avoid excessive water loss. Light is not only the energy source for photosynthesis but also an important signal regulating stomatal movement during dark-to-light transition. Our knowledge concerning blue and red light signaling and light-induced metabolite changes that contribute to stomatal opening are accumulating. This review summarizes recent advances on the signaling components that lie between the perception of blue/red light and activation of the PM H
-ATPases, and on the negative regulation of stomatal opening by red light-activated phyB signaling and ultraviolet (UV-B and UV-A) irradiation. Besides, light-regulated guard cell (GC)-specific metabolic levels, mesophyll-derived sucrose, and CO
concentration within GCs also play dual roles in stomatal opening. Thus, light-induced stomatal opening is tightly accompanied by brake mechanisms, allowing plants to coordinate carbon gain and water loss. Knowledge on the mechanisms regulating the trade-off between stomatal opening and closure may have potential applications toward generating superior crops with improved water use efficiency (CO
gain vs. water loss). |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 This article was submitted to Plant Physiology, a section of the journal Frontiers in Plant Science These authors have contributed equally to this work Edited by: Alejandro Ferrando, Universitat Politècnica de València, Spain Reviewed by: David Barbosa Medeiros, Max Planck Institute of Molecular Plant Physiology, Germany; Danilo M. Daloso, Federal University of Ceara, Brazil |
ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2020.601478 |